Hutton. — On New Zealand Land Mollusca. 199 



A. chtron, Gray (1849). 



Umbilicus moderate; spire convex, with distant membranous plaits. 

 Horny without markings. Diameter -24 inch. Dentition, 21-1-21. 



Xorth Island.— Auckland (Greenwood, Cheeseman) ; Wellington (T. W. 

 Kirk). 



A. kapida, Pfeiffer (1853). 



Umbilicus moderate ; spire flat, sub-immersed ; whorls spirally striatu- 

 lated. Chestnut with luteous streaks and dots. Diameter '3 inch. 



New Zealand. — Locality doubtful. I have not seen this species ; it is 

 found in N. Australia, and a variety at the Solomon Islands. 

 A. CREBRiFLAMins, Pfeiffer (1851). 



Umbilicus broad ■ spire convex, finely striated. • Pale horny, with red- 

 dish undulating bands. Diameter -28 inch. Dentition, 18-1-18. 

 South Island. — Greymouth (Helms). 



B. Whorls ribbed. 

 Sub -genus Calymna, Hutton. 

 A. costulata, Hutton (1882). 



Umbilicus moderate ; spire convex, closely ribbed ; ribs about 45 in the 

 tenth of an inch. Horny banded with reddish. Diameter -14 inch. Den- 

 tition, 14-1-14. 



North Island. — Auckland (Cheeseman). 

 A. lavin-ia, Hutton (1883). 



Umbilicus broad ; spire flat, closely ribbed, ribs about 18 in the tenth of 

 an inch ; lower surface smooth. Yellow homy, mottled with rufous on the 

 upper side. Diameter '5 inch. 



North Island. — Palmerston North (T. W. Kirk). 

 Genus Otoeoncha, Hutton. 

 Shell external, of very few rapidly increasing whorls, all of which are 

 open underneath. Animal limaciform, much too large to withdraw into the 

 shell ; mantle rather anterior, covering the shell ; no locomotive disc, nor 

 mucous caudal gland. Jaw with distant ribs. 



This genus appears to be allied to Peltella from Brazil and the West 

 Indies. 



0. deudiata, Pfeiffer (1851) Vitrina. 



Shell pale homy, translucent, of two and a half whorls ; striated. 

 Diameter -2 inch. Animal entirely black, or pale coloured on the foot. 

 Dentition, 26-1-26. 



North Island. — Auckland (Cheeseman) ; Thames (Adams) ; Hawke's Bay 

 (Colenso) ; -Wellington (T. W. Kirk). 



Fain. Charopida. 

 Animal heliciform, with an external shell ; tail with a mucous gland. 



