PECTINID. 171 
prickly serrated throughout ; whitish, stained with flesh rose ; ears very 
unequal (Reeve). 
This appears to be the same as the last species. 
P. multicostatus, Reeve, Conch. Ic., f. 173. Shell ovate, rather 
thin, gibbous, equilateral, equivalve; valves rayed by thirty rather 
distant, narrow, obscurely noduled ribs, finely scaled at the sides; deep 
vermilion, unspotted, marbled with white at the umbones; ears very 
unequal (Reeve). 
Apparently the same as P. sealandie. 
P. pica, Reeve, Conch, Lc., f 173. Shell orbicular, compressed, 
equilateral, nearly equivalve, valves rayed with twenty-one narrow ribs, 
interstices excavated; white variegated with grey and brown-black ; ears 
large, nearly equal (Reeve). 
Distinguished by the ears being nearly equal. 
New Zealand. (Cuming.) 
P. australis, Sowerby, Thes. Conch. 1. p. 76; Reeve, Conch. Ic., 
jf. 103. Shell orbicular, sometimes rather ventricose, scarcely equila- 
teral, equivalve, valves ranged with twenty-four nbs, which are peculiarly 
three divided, and densely finely serrated ; blackish violet or orange 
rose, unspotted ; ears unequal (Reeve). 
Foveaux Straits. Australia and Tasmania. 
Mr. Tenison-Woods gives this as a variety of P. asperimus. Lamark. 
P. radiatus, Hutton, CMM, p. 82. Orbicular, equivalve, com- 
pressed, with about eighty equal rough radiating strize; ears unequal ; 
thin ; margin crenulated ; red, ochraceous, or brownish-purple. 
Height, 1°8; breadth, “1-7. 
Stewart Island, 13 fathoms. 
P. (Dentipecten) vellicatus, Hutton, CAM, p. 82.  Irre- 
gularly orbicular, sub-equivalve, produced in front, longitudinally irregu- 
larly five-plaited, and with small radiating ribs, crossed by fine concentric 
strize ; ears unequal ; hinge line obscurely striated ; margin undulating. 
Reddish, purplish, or white spotted with pink. 
Height, 1°6; breadth, 1°6. 
Cook Strait to Stewart Island. 
Possibly the same as P. convexus of Quoy and Gaimard, or P. roseo- 
punctatus, Reeve, Conch. Ic., f. 84. 
Genus, VOLA—Klein. 
Shell sub-orbicular ; inequivalve ; superior valve flattened ; rayed ; 
ears nearly equal. 
V. laticostatus, Gray, Dief, N.Z, i, p. 260; Pecten nove 
zealandie, Reeve, Conch. Ic., f- 36. Thick, with fourteen to eighteen 
smooth radiating ribs, the larger ones sometimes depressed, with one or 
two interrupted longitudinal grooves ; flat valve with the ribs distant and 
narrower ; reddish brown to purplish-white; interior white or brownish. 
Height, 5°5 ; length, 6. 
