318 TURRITELLID^. 



I have seen ])ut one specimen containing the animal. Eastport 

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



It is qnite different from any described S})ecies, unless it be T. 

 Virg-iniana of Lamarck. Ills descrij)tion is not sufficiently definite 

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

 g-riseo-viulacesccntc nutatd,'''' I have never found upon it. It bears 

 a distant resemblance to the old Turbo tcrebra of English authors, 

 but it docs not slope to a ])oint so rapidly, and the sculpture seems 

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



Turritella reticulata. 



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

 transverse strine ; suture strongly impressed ; aperture sub-orbicular. 



Turritella reticulata, Mighels and Adams, Best. Journ. iv. 50, pi. 4, fig. 19 (1842). — 

 Stimpson, Check Lists, .5. 



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

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

 ularly ])licate longitudinally, with from three to five deli- 

 cate, impressed, revolving stria? on the five lower whorls ; 

 from and aljove the fifth whorl the transverse strias gradu- 

 ally diminisli in number, until they wholly disappear on the 

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

 T. reticu- has a reticulated appearance. Suture well impressed ; aper- 

 ture orbicular ; lalu'um thin ; 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 indcl)ted 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. 

 {Mig/ieJs and Adams.) 

 Fishing Banks ( Willis) . 



Turritella costulata. 



Shell whitish, Avith delicate transverse strife ; whorls ten, the upper ones sub- 

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

 ovate, produced anteriorly. 



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

 (1842). — Stimpson, Check Lists, 5. 



