Eglisia, (Mlostracum, Mesalia, i^-c. 373 



1886. Turitella [Ttirritellopsis) acicula: Tryon, Mon. Conch, vol. viii. 



p. 207, pi. Liiv. fig. 12. 

 1897. Tiirritellopsis ncicula : Kobelt, Conch. Cab., Turritella, p. 67, 



pi. XX. figs. 10, 11. 



Hah. Off Grand Manan, near Duck Island, and south of 

 Caj)e Cod {Sti'mpson). Also recorded by other authors from 

 Frenchman's Bay, Labrador, &c. Vudso and Magero, north 

 coast of Norway {Sars). 



Tlie animal of this species has not been described, but the 

 operculum, according to Sars, is very thin, pellucid, and 

 consists of about ten narrow and regular wliorls. Dall 

 and Tryon (/. c. supra) have suggested that Carpenter's 

 " ? Mesalia tenidsculpta ■" *, from California, is the same as 

 aciculn. This, in my opinion, is incorrect. The Californian 

 shell is smaller, has a less tapering spire, and much liner 

 sculpture. At a mere glance it is seen to be distinct, and 

 recalls very closely the general form of the type of Fenella 

 to which Carpenter has made reference ; indeed, I think 

 it preferable to locate it in that genus rather than in 

 2^urriteUopi>is. 



Turritellopsis gradssima, Thiele. 



1913. Turritellopsis gratissima, Thiele, Deutsch. Siidpolar-Exped, 

 vol. xiii. p. 201, pi. xii. lig. 20, pi. xv. fig. 23 (radula). 



Hah. Antarctic \ Gauss' Expedition). 



According to Thiele this species agrees practically in every 

 essential respect with Turritellopsis, and although the radula 

 exhibits small differences, it agrees with that of the boreal 

 form {T. acicula) in general character. 



Turritellopsis lador, Thiele. 

 1913. Ttiiritellopsis latior, Thiele, op. cit. p. 202, pi. xii. fig. 21. 



Hah. Antarctic Q Gauss ^ Expedition), 



Tachyehynchus, Morch. 



1868. Tachyrynchus, Morch, Amer. Joiu-n. Conch, vol. iv. p. 46. 

 1886. Mesalia {Tacky rhynchus): Fischer, Man. Conch, p. 694. 



Short descriptions of the animal of the type {T. reticulata) 

 are given by Morch & Jeffreys, and the operculum is said 

 to be " horny, yellow, orbicular, with nine narrow turns, 

 nearly flat." To complete this description it is only necessary 



* Proc. Calif. Acad. Nat. Sci. 1866, p. 216. 

 Ann. cfc Mag. N. Hist. Ser. 8. Vol xv. 25 



