REPORT ON THE GASTEROPODA. 



GG1 



is papillary. Suture deeply channelled, with a sharp keel above it : this keel runs out not 

 above but on the edge of the funnel-shaped top. Outer lip rises from the inner side of 

 the apical depression and slopes flatly outwards, forming thus the patulous opening of the 

 funnel-shaped depression ; at the apical keel it is angulated ; from this point it makes a 

 convex sweep, which has a slight contraction about the middle ; it is patulous and some- 

 what elliptical in front. Top nearly flat, only the outer lip rises slightly above the level ; 

 the apical depression is funnel-shaped, having a wide converging mouth and a small, not 

 deep, hole in the middle, with a papillary apex in the centre. Inner lip: a broadish 

 distinct white glaze extends across the body, on which the curve of the lip is very 

 regularly convex on to the narrow, long, low, and twisted pillar tooth ; beyond this the 

 pillar lip is slightly concave, narrow, a little patulous, and appressed. H. G"23 in. B. - 14. 

 Mouth, breadth at same place, 0"04. 



I do not know any other Utrwulus so rounded in its outlines as this ; it is also very broad rela- 

 tively to its length. 



6. Cylichna, Love"n, 1846. 



Species. 



1. Cylichna alba (Brown). 



2. Cylichna arachis (Quoy and Gaimard). 



3. Cylichna cuticulifera (E. A. Smith). 



4. Cylichna cylindracea (Pennant). 



5. Cylichna ovata, Jeffreys. 



6. Cylichna discus, Wats. 



7. Cylichna tahitiensis, Wats. 



8. Cylichna crispula, Wats. 



9. Cylichna noronyensis, Wats. 



10. Cylichna reticulata, Wats. 



11. Cylichna subreticulata, Wats. 



12. Cylichna labiata, Wats. 



1 3. Cylichna ( Volvula) paupercula, Wats. 



14. Cylichna (Volmda) sulcata, Wats. 



15. Cylichna (Memstia) bkona, A. Adams. 



1. Cylichna alba (Brown). 



Vulvar ia alba, Brown, 111. Conch., p. 3, pL xix. figs. 43, 44. 



Cylichna alba, Loven, Ind. Moll. Scandinav., Ofversigt Vet. Akad. Forhandl., 1846, p. 142, No. 64. 

 Bulla (Cylichna) alba, A. Adams in Sowerby's Thes. Conch., vol. ii pt. 11, p. 591, sp. 105, pi. cxxv. 



fig. 137. 

 „ triticea, Gould, Invert. Massachusetts, p. 165, fig. 98. 

 Cylichna alba, Morch's West Greenland Moll, in Rink's Greenland, No. 17. 



„ ,, Jeffreys, Brit. Conch., vol. iv. p. 417, pL viii. fig. la (The odontophore), vol. v. p. 223, 



pi. xciii. fig. 6. 

 ,, „ Binney's Gould, Invert. Massachusetts, p. 220, fig. 98. 



„ ,, Gwyn Jeffreys, Moll. Europe and East N. Amer., Ann. and Mag. Nat. Hist., 1872, 



ser. 4, vol. x. p. 241, No. 220. 

 „ „ Gwyn Jeffreys, "Valorous" Exped. Gastrop., Ann. aud Mag. Nat. Hist., 1877, ser. 4, 



vol. xix. p. 333. 

 „ „ Gwyn Jeffreys, Arctic Exped. Post-Tert. Fossils, Ann. and Mag. Nat. Hist., 1877, 



ser. 4, vol. xx. p. 237. 



