a n d of its Depen defa it s . •' ! '■'•'! 



83. Littorina littoral-is, F. & H. Abundant everywhere. 



Range — Staten Island to Greenland; the MediteiTanean. 

 var. Peconica, Smith. Greenport. 



84. iAttorvna vrrorata, Gray. Huntington. A few dead speci- 

 mens were found in the grass above high-water mark. Rockawav. 



Range— Tampa Bay to Long Island. 



85. Lacuna vincta, Turton. Not uncommon. 

 Range — Staten Island to Greenland, Mritish Channel. 



86. Hissoa minuta, St. Abundant in sheltered situations in bays, 

 and also in salt-water ponds. Great differences exisl between the shells 

 grouped under this name, and several species probably exist. Speci- 

 mens from Napeague Bay, at the western extremity of Montauk l't.. 

 are much longer and slenderer than usual. Specimens from Greenport 

 are also marked by Stimpson as new. 



Range — Staten Island to Gulf of St. Lawrence. 



87. Hissoa aculeus, St. One specimen on Little Gull Island. 

 Range — Gull Island to Eastport. 



88. Hissoa ( Cingvla) Icevis, De Kay. Bushwick Inlet (De Kay). 

 We have not been able to identify this species. 



89. Hissoa Stimpsoni, Smith. Shell thin, rather dark- brown. Di- 

 fig. 2. vergence about 24°. Whorls seven, very convex, separated b$ 



a very deep suture, and distinctly wrinkled by the lines of 

 growth. Apex obtuse. Aperture oval, nearly one-third the 

 length of the shell. Length, 0.23 inches, of which the first 

 Stimpsoni. whorl occupies rather more than one-half. 

 Two specimens at Greenport. 



90. Assiminea? A small mollusc, doubtfully referred to this ge- 

 nus, occurred on a pier at Huntington. The specimens are not hot* 

 accessible. 



91. Skenea , Smith. Greenport. About one-twentj fifth of 



an inch in length. Only one or two specimens were found, and in a 

 state that will hardly admit of a satisfactory description. 



Turritellidae. 



92. Ccecu/m pidchellum, St. Greenport. 

 Range — Greenport to N<-w Bedford. 



93. ( 'cecwm < 1 ooperi i Smith. 



JULY, 1870. 2G ANV '- v ' n u - Bm • v '" • IX - 



