Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 1-9

Published in Proceedings of the Biological Society of Washington, in 1968, in volume 81, pages 11-22

Published in Proc. Biol. Soc. Washington, in 1968, in volume 81, pages 23-30

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 31-36

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 37-40

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 41-43

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 45-52

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 53-67

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 69-86

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 87-89

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 91-96

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 97-100

Published in Proceedings of the Biological Society of Washington, in 1968, in volume 81, pages 101-108

Published in Proceedings of the Biological Society of Washington, in 1968, in volume 81, pages 109-110

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 111-121

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 123-142

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 143-149

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 151-153

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 155-160

Published in Proceedings of the Biological Society of Washington, in 1968, in volume 81, pages 161-172

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 173-178

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 179-190

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 191-196

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 197-208

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 223-230

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 231-239

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 241-250

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 251-256

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 257-260

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 261-274

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 275-290

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 291-318

Published in Proc. Biol. Soc. Wash, in 1968, in volume 81, pages 319-322

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 323-334

Published in Proceedings of the Biological Society of Washington, in 1968, in volume 81, pages 335-346

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 347-349

Published in Proc. Biol. Soc. Wash., in 1968, in volume 81, pages 351-366

Published in Proc. Biol. Soc. Wash., in 1968, in volume 81, pages 367-402

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 403-412

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 413-418

Published in Proc. Biol. Soc. Washington, in 1968, in volume 81, pages 419-26

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 431-437

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 439-471

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 479-483

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 485-489

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 491-497

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 499-510

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 511-538

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 539-570

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 571-585

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 587-604

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 605-612

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 613-624

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 625-627

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 629-634

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 635-691

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 693-749

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 751-754

Published in Proceedings of The Biological Society of Washington, in 1968, in volume 81, pages 755-759