of British Mollusca. 67 



" Shell oval, thin, seniitransparent, and glossy : sculpture, 

 very numerous and regular fine spiral or revolving strife, 

 which are closely punctured ; they are stronger at the base 

 than at the crown : colour white : spire deeply sunken, and 

 for the most part concealed in a small cavity in the centre of 

 the crown ; but the bulb-shaped apex is visible at the bottom 

 of the cavity : mouth semioblong, contracted above and ex- 

 panding below : outer /i); slightly raised above the crown and 

 channelled, curved in the middle and at the base : inner lip 

 inconspicuous : pillar straight on the upper half and incurved 

 below. L. 0-2, B. 0-1." 



Three specimens from ' Triton ' exped., Stat. 13, lat. 50° 

 6V N., long. 8° 18' W., 570 fathoms {Jeffreys), and I have 

 a small specimen (L. O'l) which I found in ooze from the same 

 station. 



As far as the above description goes the shell might be a 

 Tornatina ; but the figure represents a shell nearly allied in 

 form to Scaphander and with sculpture somewhat like that of 

 S. punctostriatus. Compared with my smallest example of 

 the latter species, less than 0*2 long, my little Gryptaxis 

 differs in its more equal breadth throughout, the lip being 

 more expanded below and tlie apex at the other extremity 

 being broader, and the small *S'. punctostriatus shows no more 

 sign of perforated apex than does the adult. I have likewise 

 compared it with Cylichna insculpta, Totten, which shell is 

 more broadly ovate and has the apex closed. 



Fam. 4. BuUidae. 

 Genus 1. Bulla, Klein. 



45. Bulla utriculus, Brocchi. 



Var. a. ohlonga, Jeffreys. 



46. Bulla semilevis, Seguenza. 



Bulla semilevis, Seg'ueuza, Form. terz. della Proviucia di Reggio (Cala- 



briaj, 1879, p. 241, pi. xvi. tig. •'), 

 Bulla semilevis, Jeffi'eys, Report ' Travailleur ' Dredgings, Brit. Assoc. 



Rep. 1880, p. 10 (name ouly). 

 Bulla {Y) ebuniea, IJall, Bull. 'Mus. Comp. Zool. ix, (1881), p. 98 ; ib. 



xviii. (188!) ), p. oo, pi. xvii. tig. 0: Bull. U. S. Nat. Mus. no. -VI 



(1889), p. 88, pi. xvii. tig. 0. 

 Bulla Guernei, Dautzeuberg, Result des Uamp. scient. par Prince de 



Monaco, Contrib. a la Faune malacol. des A9ores, 1889, p. 24, pi. i. 



tigs. 5 a-d. 



Off the south of Ireland, 1000 fathoms, ' Flying Fox,' 

 1889 {E. A. Smith). 



5* 



