On new Species of Shells. 1 1;) 



12 mm., Iciigtli of cuch ol" last lour pair.s of le^s aljout 

 33 mm. 



According to Jacqiiinot'.s figure, the female ditfers from 

 the male in having the chehe shorter and more slender, the 

 ojipo-sing margins of the fingers with tufts of short setic but 

 without teeth. 



Colour. Yellowish. 



Habitat. New Zealand (Greymouth and Sumner) and 

 Auckland Islands.* 



EXPLANATION OF PL AT JO V. 



Jlymenosoma depressuin, Jacq. it Luc. 



Fif/. L Male, dorsal view, x '2. 



Fiij. 2. Front, sliowicj^ rostrum, e.ve:«, &c., X about 8 times. 



J'i(/. 8. Chela, outer side, X about 8 times. 



Fiff. 4. Second and third legs, X nearly 4 times. 



XVI. — Descriptions of 7ieio Species of Trochomorpha, Cochlo- 

 styla, Amphidromus, Bulimulus, Dryraa^us, Placostylus, 

 iStenogyra, Leptopoma, Cyclophorus, Cyclotus, and 

 Alycajus. By Hugh C. Fultox. 



[Plates L\. & X.] 



Trochomorpha modesta, sp. n. (PI. IX. tig. 1.) 



Sliell rather widtly nmbilicated, depressed, uniform brown 

 colour ; spire conic, apex smooth, rest of shell with tine oblique 

 striaj crossed on the underside by microscopic spirals ; wliorls 

 6, convex, somew-hat depressed near the suture, last sharply 

 carinate and compressed at the margin ; aperture very oblique ; 

 })eristome rather thin, margins slightly thickened. 



.Maj. diam. 10^, alt. 5 mm. 



llab. Sinkij) island, Straits of Malacca. 



This form is allied to T. billeana, Mijrch, but is smaller, 

 has a slightly higher spire, broader umbilicus, and half a 

 whorl more. T. modesta can also be distinguished from 

 T. biUeana by the slight depression just above the suture and 

 keel of last whorl. 



Keadily separated from 2\ castra, Bens., by its wider 

 umbilicus aiul uniform coloration. 



• [There are specimens of this species in the British Museum collection 

 from Sumner and from Akaroa Heads. Tlie le-rs are rather more slender 

 than in I'rof. Chilton's ti'nucs. — \N'. T. Cai.man. 



