318 turritellidj:. 



I have seen but one specimen containing the animal. Eastport 

 (^Cooper) ; Banks (^Willis) ; fossil, Beauport {Davjson). 



It is quite cliiferent from any described species, unless it be T. 

 Virginiana of Lamarck. His description is not sufficiently definite 

 to identify his shell with ours, and the character " basi annulo 

 <rriseo-viulacescente notatd,'^ I have never found u])on it. It bears 

 a distant reseml)lance to the old Turbo terebra of English authors, 

 but it does not slope to a point so rapidly, and the sculpture seems 

 to be from grooves, and not from raised lines as in T. terebra. 



Turritella reticulata. 



Shell turreted-subulate ; whorls twelve, convex, with longitudinal folds and 

 transverse striae; suture strongly hiipressed ; aperture sub-orbicular. 



Tarrittlla vi-ticuhita, Mighels and Adams, Bost. Journ. iv. 50, pi. 4, fig. 19 (1842). — 

 Stimpson, Check Lists, 5. 



Shell turreted, very slender, of a dingy white or ash color ; whorls 

 eleven to twelve, convex, distinctly, though somewhat irreg- 

 ularly plicate longitudinally, with from three to five deli- 

 cate, impressed, revolving striai on the five lower whorls ; 

 from and above the fifth whorl the transverse striae gradu- 

 ally diminish in number, until they wholly disappear on the 

 upper two or three whorls. The whole surface of the shell 

 T. THicu- has a reticulated ai)pearance. Suture well impressed ; aper- 

 ture orbicular ; la))rum tliin ; operculum horny. Length, 

 seven tenths of an inch ; breadth, two tenths of an inch ; diver- 

 gence, twenty degrees. 



Bay Chaleur, in the Gulf of St. Lawrence ; taken from the stom- 

 achs of codfishes by Mr. Foster, fisherman, in the summer of 1841, 

 to whom we are indebted for specimens. 



This species is allied to T. erosa, Couthouy, but is easily recog- 

 nized by the longitudinal ribs, and by its more slender form. 

 (^Mii^hels and Adams.^ 

 Fishing Banks {Willis^. 



Turritella costulata. 



Shell whiti.sh, with delicate transverse stria? ; whorls ten, the upper ones sub- 

 plicate, the last two rather smooth ; body whorl sub-carinated ; aperture sub- 

 ovate, produced anteriorly. 



Turritella costulata, Mighels and Adams, Bost. Journ. Nat. Hist. iv. 50, pi. 4, fig. 20 

 (1842). — Stimpson, Check Lists, 5. 



