﻿THE COASTS OF RHODE ISLAND AND NEW JERSEY. 149 



red, composed of sixty or more segments ; ninth to the eleventh segment inclusive, 

 slightly thickened ; two generative apertures on each side of the ninth segment. Four 

 rows of podal hooks, anteriorly five or six in each fasciculus, posteriorly three or four 

 in each fasciculus. Length up to an inch and a half, by the fourth of a line in breadth. 

 Abundant about the roots of grasses on the shores of a sound on Point Judith. 



CRUSTACEA. 



51. Ocypode arenaria, Say. Great Egg Harbor. 



52. Gelasimus pugilator, Desmarest. Absecom and Great Egg Harbor ; in im- 

 mense numbers, at margins of salt meadows, or upon salt flats. 



53. Gelasimus minax, Le Conte. Prom a brackish spring at Great Egg Harbor, 

 and at Dennis Creek, N. J. Discovered by Mr. Ashmead. 



54. Sesarma cinerea, Say. Absecom and Great Egg Harbor. 



55. Sesarma reticulata, Say. Absecom and Great Egg Harbor. 



56. Pinnotheres ostreum, Say. Point Judith, Absecom, and Great Egg Harbor. 



57. Pinnotheres maculatum, Say. Point Judith. Frequent in Mytilus edulis. 

 Say gives the muricated Pinna of our coast as the animal which protects this parasitic 

 crustacean. His description also closely applies to the parasite of our Mytilus edulis, 

 which is a curious fact as the same species of Mytilus of Europe contains the P. mytilo- 

 rum, which is quite distinct from the P. maculatum. 



58. Platycarcinus irroratus, M. Edw. Point Judith ; Great Egg Harbor. 



59. Platycarcinus sayi, Dekay. Point Judith ; Great Egg Harbor. 



60. Platyonichus ocellatus, Latr. Point Judith; Newport; Great Egg Harbor. 



61. Lupa dicantha, M. Edw. Point Judith; Absecom; Great Egg Harbor. 



62. Lupa maculata, Say. Great Egg Harbor. Obtained by Mr. Ashmead. 



63. Carcinus mcenas, Leach. Point Judith ; Newport. 



64. Panopeus Herbstii, M. Edw. Newport; Great Egg Harbor. 



65. Panopeus Wurdmanii, Gibbes. Delaware Bay. Obtained by Mr. Ashmead. 



66. Hyas coarctata, Leach. Great Egg Harbor. Obtained by Mr. Ashmead. 



67. Hippa talpoidea, Say. Point Judith ; Absecom; Great Egg Harbor. 



68. Pagurus pollicaris, Say. Newport; Point Judith; Great Egg Harbor. 



69. Pagurus longicarpus, Say. Newport ; Point Judith ; Great Egg Harbor. 



