194 Catalogue of the Mollusca of Little Gull Island. 



XXIY. — Catalogue of the Mollusca of Little Gull Island, 

 Suffolk County, IVew York. 



By Sanderson Smith. 

 Bead May 1, 1865. 



Little Gull Island is situated nine or ten miles east of Oyster 

 Pond Point, which terminates the northern peninsula of eastern 

 Long Island — Plumb Island and Great Gull Island intervening. 

 It is a mere bank of gravel and boulders, not over 100 yards in 

 its greatest length, and probably nowhere of half that width. 

 A catalogue of the mollusca collected on this Island may prove 

 of some interest, as showing the species which inhabit such an 

 isolated and exposed situation. 



An artificial hillock, built up on all sides with masonry, sup- 

 ports the lighthouse* and keeper's house, or they would pro- 

 bably have been entirely swept away by the waves. 



Pyrula canaliculata Brug. Tectura testudinalis Gray. 



Buccinum nndatum Linn. Anomia ephippium Linn. 



Nassa trivittata Say. Anomia aculeata Gmelin. 



Columbella avara Say. My til us modiolus Linn. 



Natica triseriata Say. Area transversa Say. 



Natica heros. Cardium Mortoni Conrad. 



Littorina rudis Gould. Kellia planulata Stimpson. 

 Littorina littoralis Forbes & Hanley. Petricola dactylus Say. 



Rissoa aculens. Pandora trilineataSay. 



Crepidula unguiformis Lam. Saxicava distorta. 

 Crepidula fornicata Lam. 



A few other species may be found about the island on a more 

 careful search ; but its molluscan fauna is probably fairly repre- 

 sented by the above list. One or two species, likewise, as 

 Petricola dactylus and Cardium Mortoni, may not properly 

 belong to the island, and have been perhaps carried there by 

 storms. 



