Published in Proceedings of the Academy of Natural Sciences, Philadelphia, in 1884, in volume 35, pages 132-133
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 10
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 12-14
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 14
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 17-19
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 20-21
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 21-22
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 22-23
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 24-27
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 28
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 30-33
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 34-36
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 42-46
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 50-51
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 120
Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 130-136
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 140
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 142-143
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 151-153
Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 167-183
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 184-185
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 185-187
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 193-199
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 211-212
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 214-215
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 221-226
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 232-235
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 283-286
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 287-288
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 292-293
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 300-310
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 346-347
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1884, in volume 36, pages 349-350
Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1884, in volume 1884, pages 215-217