148 VENERID*. 
dentate at the posterior end ; lunule lanceolate, imbricatostriate ; pale 
yellowish or brown, purplish at the umbones. 
Height, 1°8 ; length, 2:1. 
Common on the coasts of the North Island, and Massacre Bay ; 
Dunedin rare. 
The Natives call this shell ‘“ pukauri.” 
CG. stuchburyi, Gray, Dief. NZ, ii., p. 250; Reeve, Conch. Ic., 
Ft 593; Smith, Voy. Erebus and Terror, pl. 3 a 4; V. dteffenbachit, Gray, 
Dieff. N.Z., i., p. 250; V. sealandica, Ouoy, Lowi p i S226 Pl OAns. 15-0. 
Ovato-cordiform, sub-trigonal, ey ollen thick, radiately ribbed, and with 
distant concentric lamella, which are higher on the anterior end ; pos- 
terior end smooth, both the nbs and the lamellz obsolete ; pallial sinus 
short, broad, trigonal ; hinge plate curved and strongly sinuated ; lunule 
not margined ; reddish-brown, paler behind, interior bluish-white, with 
more or less dark purple on the posterior end. 
Height, 1°75 5. length, 2: 
Common, Auckland to Dunedin; Auckland Islands ; Chatham 
Islands. 
The Natives call this shell ** huai” or “ pipi.” 
V. dteffenbachi?, Gray, is the young of this species. 
C. costata, Quoy, Zc, il., p. 521, pl. 84, f 1-2; V. crassicostata, 
Reeve, Conch. Lc., f. 42. Oral ‘swollen, inequilateral, rugose, truncated 
behind ; with thick radiating abe crossed by concentric striz ; white, 
sometimes yellowish on the umbones ; interior white, with the apex, and 
generally the posterior end, purple. 
Height, 1°2; length, 1°55. 
Common in the South. 
The Natives call this shell ‘“ kaikai-kororo.” 
GC. lima, Sowerby ; Deshayes, l.c., p. 137; Reeve, Conch. Ic., f. 2. 
Oval, sub-quadrate, pale, sparingly variegated with brown, radiately rib- 
bed ; ribs rounded, serrated, concentrically ridged, ridges on the ribs 
acuminate ; dorsal margin lined with brown, slightly declining, in front 
greatly declining ; lunule impressed, fulvous ; ventral margin rounded. 
(Deshayes. ) 
New Zealand (Cumming). 
C. mesodesma, Quoy; Venus mesodesma et crassa et denticulata 
et eee Quoy, l.c., pl. 84; V. spissa, Deshayes, Anim. sans vert. Vi., p. 
373; V. spurca, Sowerby; Reeve, Conch. Lc. f- 90. Ovate, sub-trigonal, 
rather compressed, sub- equilateral, longitudinally grooved ; lunule lan- 
ceolate ; white or brown, with radiating bands or zig-zag lines of brown 
or purplish- brown ; interior white in the centre with more or less violet 
round the margins ; very variable in colour. 
Heicht.-7 2 leneth, 11. 
Common. Philippines and Valparaiso. 
C. gibbosa, Hutton, CM.M., p. 71. Ovato-trigonal, gibbous, 
sub-equilateral, longitudinally grooved, lunule cordate ; yellowish-white ; 
