MOLLUSCA 277 



Fam. ZONITIDAE. 



GoDwiNiA, n. gen. 



This new genus is proposed for the Vitrina capcrata of Gould, which has, of 

 recent years, usually been placed in Helicarion ; it will be seen from the valuable 

 anatomical notes of Lt.-Col. Godwin-Austen that there are differences which separate 

 the species from that genus. Probably the Vitrina tenella of Gould also belongs here. 

 The types oi Helicarion Ferussac (Tabl. Moll. 182 1, pp. xxxi, 24) appear to have been 

 the Australian iorms freycineii and cuvieri. 



(i) Godivinia caperata Gould. 



Vitrina caperata Gould, P. Boston Soc. 11. (1847), p. 181 ; U. S. Explor. Exped. 



Moll. 1856, pi. I. fig. 9. 

 Helix newcombi Pfeiffer, P. Zool. Soc. London, 1S54 (Jan. 1855), p. 51 ; Reeve, 



Conch. Icon. Helix, pi. clxxxix. fig. 132 1. 



Plate XII. figs. 6— 12. 



Hab. Kauai (Gould, Perkins). — Oahu (Pfeiffer). 



Very possibly the habitat of ' Oahu ' is a mistake. 



" The animal is dark, with a rather broad pale pallial margin ; foot with a well 

 defined central area beneath ; the specimen was so much contracted that the mucous 

 gland could not be decisively made out ; from analogy, however, one should be present. 

 There are no shell-lobes, the mantle-edge is curved and well defined. The right dorsal 

 lobe is small, and the left lobe is long, narrow, and continuous. 



" The visceral sac has three coils. The buccal mass has a strong, broad, muscle on 

 the lower posterior side ; the oesophagus is short, leading into a very capacious stomach ; 

 the salivary gland is in one compact, rounded mass. Jaw solid, dark sienna in colour, 

 with a very straight cutting edge ; odontophore long and narrow, with a few large 

 median teeth ; at first sight these centrals appear to be simple and straight-sided in form, 

 and they are very nearly so, but closer examination shows that the centre and adjoining 

 teeth have very small notches on the outer side ; these are not cusps. The laterals are 

 all curved and aculeate. The dental formula is : 



18— 5— I— 5-18 



23—1—23 



Unfortunately the generative organs were not seen by me, all this portion being lost 

 during dissection, as will sometimes occur in these small species. 



