CERITHIOPSIS. 269 



of brown : S2:)ire regularly tapering ; the terminal portion be- 

 comes abruptly narrower, as in the preceding species : whorls 

 12, compressed ; the last slightly exceeds one-third of the 

 shell : suture deeply channelled : mouth irregularly rhomboidal, 

 liruncated at the base, but not so abruptly as in the last species : 

 canal semitubular, somewhat curved, exhibiting outside a deep 

 and obliquely rounded notch at the base ; length of the mouth, 

 compared with that of the spire, as 1 to 4 : outer lip forming 

 an obtuse angle, with a gentle curve, not prominent, having a 

 thin edge, which is scalloped by the spiral ridges ; inside 

 grooved from the same cause ; this lip is inflected at the upper 

 corner of the mouth on the peripheral ridge, without forming 

 a distinct sinns, nor does it retreat or slope backwards : inner 

 lip rather broad, thicker on the lower part of the pillar, con- 

 tinuous with the outer lip at the upper corner : pillar very 

 short, slightly curved : operculum thin, yellowish, without any 

 perceptible spire, very faintly striated. L. 0*3. B. 0*1. 



Habitat : Among trawl-refuse at Plymoutli (Barlee 

 and Jordan) ; Falmouth (Hockin) ; Cork (Wright) ; co. 

 Galway (Barlee and J. Gr. J.). It is either rare or has 

 not been sought for. 



This interesting addition to the European fauna has 

 somewhat the aspect of Cerithium metula, which young 

 specimens especially resemble in colour; but the shell 

 of the present species is a pyramid rather than an obe- 

 lisk, the ridges are more strongly tuberculated, the apex 

 is very different (partaking of the generic character)^ 

 and there is a true canal. It may be known from Ceri- 

 thiopsis tubercularis by its colour _, much wider base, 

 having no basal keel, and by some of the upper whorls 

 being finely striated in the line of the spire. 



3. C. pulchel'la^, Jeffreys. 



C. pulchella, Jeffr. in Ann. & Mag. N. H. 3rd ser. ii. p. 129, pi. v. f. 8 a-c. 



Shell forming a short cylinder, rather solid, nearly semi- 

 transparent, and glossy: sculpture, 4 spiral thread-like and 



* Pretty little. 



