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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 9-11

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 12

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 13-18

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 36

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 39-56

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 280-281

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 296-297

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 300

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 301

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 319-321

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 322-341

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 342-343

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 344-345

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 349-350

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 350-351

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 352-354

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 366-368

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 373-376

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 384

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1886, in volume 38, pages 390