250 FAUNA OF NEW ZEALAND. 



160. Venus Yateii. Gray. Yale's New Zealand, App- 

 Inhab. East Coast. Yate. 



Shell ovate, rather truncated behind, solid, brown, with rather 

 distant, thin, concentric laminae, which are higher behind and 

 before, and waved ; hinder slope depressed, lozenge-shaped ; 

 lunule laminar. Like V. plicata, but rather shorter ; concentric 

 plates higher, waved, and torn on the edge. 



161. Venus Dieffenbachii. Gray. 

 Inhabits New Zealand. 



Shell trigonal, cordate, solid, thick, white ; umbones brown, with 

 broad radiating ribs and distinct, erect, sharp-edged concentric 

 ridges ; the front side with close concentric sharp-edged ridges ; 

 the hinder side smooth, with indistinct broad radiating ribs ; the 

 hinder slide flattened; the lunule cordate; the disk of young shell 

 and the hinder edge and hinge of the adult shells purple. 



The younger shell is sometimes more oblong, being produced 

 behind. 



162. Venus Stutchburii. Gray. Wood's Cat. Supp. f. . 

 Venus Costata. Quoy et Gaim. Voy. Astrol.iii. 521, 

 t. 84, f. 1-2. 



Inhabits New Zealand. Quoy. B.M. 



163. Venus Zelandica. Quoy et Gaim. Voy. Astrol. iii. 

 522, t. 84, f. 5-6. 



Inhabits New Zealand. Quoy. B.M. 



164. Venus crassa. Quoy et Gaim. Voy. Astrol. iii. 523, 

 t. 84, f. 7-8. 



Inhabits New Zealand. Quoy. B.M. 



165. Venus intermedia. Quoy et Gaim. Voy. Astrol. iii. 

 526, t. 84, f. 9-10. 



Inhabits New Zealand. Quoy. B.M. 



166. Veneruiis reflexa. 

 Inbab. Rocks, New Zealand. 



Shell oblong, very irregular; rounded in front and truncated 

 behind ; surface with thin sharp-edged, reflexed, concentric 

 ridges, which are highest and most bent over and back at the 

 hinder edge, and they generally have two or three lower concen- 

 tric ridges between them ; hinge teeth, 3. 3. ; inside yellowish, 

 hinder half blackish purple, with a yellow edge. 



