48 GASTEROPODA. 



* 223. C. SBFeilS, Reeve. Shell oblong-ovate, angularly raised in 

 the middle, valves rudely impressly striated throughout, umboual 

 eminence smooth ; dull green ; ligament granosely coriaceous. 

 (Reeve:) 



* 221. C. COntractUS, Reeve. Shell oblong, peculiarly con- 

 tracted at the extremities, especially the anterior ; terminal valves and 

 lateral areas of the rest concentrically granulated ; granules solitary; 

 central areas very minutely and closely ridged, ridges curved and con- 

 spicuous towards the sides, finer towards the middle, and decussated 

 with oblique striae. Light bay, flamed in the middle with brown; 

 ligament granosely coriaceous, dark brown. (Reeve.) 



* 225. C. Stangeri, Reeve. Shell ovate, terminal valves, and 

 lateral areas of the others, rayed with rows of closely packed square 

 appressed granules ; central areas smooth in the middle, closely ridged 

 on each side, interstices rather deep. Yellow and green, tesselated 

 with green spots ; ligament squamosely coriaceous. (Reeve.) 



226. C. empleurilS, Hutton, Trans. N.Z. Inst., iv., p. 178. 

 Oblong ; margin with very minute scales ; valves rather elevated and 

 flattened on each side, sub-carinate ; posterior margins slightly con- 

 cave, with a small central point ; terminal and lateral areas raised 

 above the rest, minutely punctate ; median areas minutely punctate, 

 sometimes with a row of deep longitudinal pits along the anterior 

 edges of the raised lateral areas. Uniform yellowish pink. Length, 

 75; breadth, '3. 



Founded on two specimens in the Colonial Museum, locality not 

 stated. 



227. C. rudis, Hulton, Trans. N.Z. lust., iv., p. 179. Oblong ; 

 mnrsin with minute scales ; valves elevated, flattened on the sides, not 

 keeled ; apex of anterior valve recurved, with its posterior margin 

 slightly convex at the sides, and deeply concave in the centre ; posterior 

 margins of intermediate valves straight ; posterior valve rather small, 

 apes posterior, pointed and emarginate; anterior valve, and lateral 

 areas, with radiating moniliform ribs ; posterior and median areas 

 widely, but rather irregularly, deeply longitudinally furrowed, with 

 narrow ridges between. Margin grey, with broad irregular reddish 

 brown transverse bands ; valves greyish brown ; interior greyish 

 white. Length, T75 ; breadth, '75. 







TONICIA. 



Margin of the mantle simple, naked, nearly smooth, or velvety ; 

 last valve entire. 



South America. Australia. Greenland. 



228. T. lindulata, Quay, Voy. Astrolabe, iii., p. 393. Oval ; 

 valves rounded, polished, sub-carinate ; posterior margins straight, 

 produced into a rather acute central point; terminal area of anterior 

 valve, and lateral areas of intermediate valves, with indistinct radiating 

 moniliform ridges ; posterior valve, and median areas of anterior and 

 intermediate valves with waved transverse striae. Mantle reddish brown ; 



