PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 119 



Pinnixa chaetopterana Stimp., Ann. Lye. N. H., New York, vol. vii, p. 235, 1800. 



Wellfleet, 1870 5 collected by Prof. H. E. Webster, wlio fouud it in 

 great abundance in the tubes of Amphitrite ornata, on the flats near the 

 town. 



Platyonichus ocellatus Latr. Smith, Inv. V. S., p. 547, 1874; Trans. Conn. Acad., 

 Tol. V, p. 33, ld79. 



Extremely abundant everywhere along the inner shore, in the vicinity 

 of Provincetown, at low water and deeper. Large numbers were ob- 

 served to be molting during August and the last of July, and fresh 

 exuviae were very common all through the latter half of the summer. 

 One small specimen obtained while molting, and preserved in alcohol, 

 afforded the following measurements: length of carapax in the exuvia, 

 35mm. -^idth, 42"'"; length of freshly expanded carapax, partly con- 

 tracted in alcohol, 38""™ ; width, 47«™. The largest specimen taken on 

 the shore measured : length of carapax, 71™™ ; width, 86""™. On A ugust 

 16, and during one or more succeeding days, the young were seen swim- 

 ming at the surface in comitless numbers, but how for from the shore 

 they extended was not determined ', they were very plentiful about the 

 end of the long steamboat wharf. They varied in length of carapax 

 from about 11™™ to 10 "^'°. September 3 they were again abundant, but 

 less so than on the former occasion, and they remained nearer the shore, 

 or at least closer to the bottom. At this time they were from 18™'^ to 

 23™™ long. 



Carciuus maenas (Linn^) Leacli. Smith, Trans. Conn. Acad., vol. v, p. 34, 1879. — 

 C. granulatiis Smith, Inv. V. S., p. 547, 1874. 



Collected by Smith and Harger, 1872. 



Panopeus depressus Smith, Proc. Bos. Soc. N. H., vol. xii, p. 283, 1859; In^. V. S., 

 p. 547, 1874 ; Trans. Conn. Acad., vol. v, p. 37, 1879. 



Collected by Smith and Harger, 1872. 



Panopeus Sayi Smith, Proc. Bos. Soc. N. H., vol. xii, p. 284, 1859; Inv. V. S., p. 547, 

 1874 ; Trans. Conn. Acad., vol. v, p. 37, 1879. 



Found abundantly in the eel-grass off the dike, and also collected by 

 Smith and Harger, 1872. 



Cancer irroratus Say. Smith, Trans. Conn. Acad., vol. v, p. 38, 1879. 

 Common; shore, at low water. 



Libinia emarginata Leach. Smith, Trans. Conn. Acad., vol. v, p. 45, 1879. — i. ccna- 

 liculata Smith, luv. V. S., p. 548, 1874. 



Very abundant at low water, Provincetown ; several very large males 

 were also obtained from Wellfleet Harbor, the largest measuring: 

 length of carapax, 113™°» ; width, excluding spines, 103™™. 



Eupagurus longicarpus (Say) Stimp. Smith, Inv. V. S., p. 549, 1874; Trans. Conn. 

 Acad., vol. V, p. 47, 1879. 



Very abundant. 



