174 Transactions. — Zoology. 



denticles four. Second lateral rhornboidal ; the anterior margin with five 

 denticles. Third lateral versatile, the base ernarginate, the middle con- 

 stricted, the outer posterior margin with three curved cusps. 



Animal. Eostrum ernarginate ; tentacles short, slightly tapered, and 

 rounded at the ends ; the eyes on slight bulgings at their bases ; foot short, 

 not produced much beyond the operculum ; tail rounded. Body and foot 

 brown ; tentacles and a band on each side of the head purple ; rostrum 

 broadly margined with white, and the tentacles minutely tipped with the 

 same colour. 



Hah. Greymouth (E. Helms). 



Leptopoma calva, Hutton. 



The operculum and dentition resemble that of L. pannosa. 



Hah. Greymouth (E. Helms). 



Eealia turmculata, Pfeiffer. PL xi., fig. h. 



Dentition, 3-1-3. 



Central tooth longer than broad, narrower behind, deeply constricted in 

 the middle, the recurved margin with five denticles. First lateral oval with 

 a short, rather broad, stalk, and five denticles. Second lateral oval with 

 a short. narrow stalk and six denticles. Third lateral sub-rhomboidal, 

 pointed behind and constricted on the outer margin, with four denticles. 



Operculum oval, of about three rapidly increasing whorls, the last of 

 which is rather strongly transversely striated ; nucles nearer the centre 

 than the margin. 



Hob. Whangarei (Judge Gillies). 



Eealia hochstetteri, Pfeiffer. 



The dentition and operculum are much the same as in the last species. 



Hab. Auckland (Judge Gillies). 



B. New Species. 



Patula jessica, n. s. 



Shell small, discoidal, widely umbilicated, ribbed ; colour horny, largely 

 radiately streaked and clouded with reddish brown, giving a general dark 

 colour to the shell. Spire fiat or slightly convex, apex often pushed in ; 

 whorls 4^- to 5£, very slowly increasing, rounded, with numerous rather 

 close ribs, which are strongly sinuated on the upper surface, but straight 

 and feebler below ; ribs about 36 in the tenth of an inch, the interstices 

 strongly striated with growth-lines, and more or less reticulated with 

 spirals ; suture impressed ; umbilicus wide, perspective, showing all the 

 whorls ; aperture nearly vertical, rotundly lunar ; peristome thin, flatly 

 angled above, then regularly arched, the margins at right angles. Greatest 

 diameter "17 ; least *15 ; length - 08 inch. 



Hab. Bealey, Canterbury (Dr. v. Haast). 



