108 PATELLID. 
black ; interstices blotched with black and white ; interior dull ash; 
nucleus fulvous (Reeve.) 
Auckland Islands. Otago. Banks’ Peninsula. 
This species passes into P. magel/anica ; but the typical state is dis- 
tinguished by its more depressed form, and more anterior position of the 
apex. 
P. reevei, Hutton; P. imbricata, Reeve, Conch. Ic., f. 93 (nec 
Linneus.) Shell ovate, tumidly convex; apex anterior, obtuse, radia- 
tely many ridged ; ribs close set, scarcely raised, everywhere densely, 
sharply imbricated ; dark blue-black ; interior lead-blue, orange rust in 
the middle (Reeve.) 
Wellington. Dunedin. Chatham Islands. 
P. argyropsis, Lesson; Voy. Coquille, Zool., i, p. 419; P. 
decora, Philippi ; Reeve, Conch. Ic., f. 33. Shell oval, slightly convex, 
much depressed ; apex obtuse, short, anterior, the inferior face lightly 
concave ; margin thin, sinuous, angulated at the termination of each of 
the diverging ribs which cover the upper face ; ribs separated, having in 
the interval a median line and very fine and very close transverse lines ; 
above greenish; below silvery, marked with purplish brown grooves ° 
which correspond to the ribs on the dorsal face (Lesson.) 
Length, 15 lines; breadth, 13 lines ; height, 3 lines. 
Bay of Islands, on rocks. Otago. 
P. affinis, Reeve, Conch. Ic., f- 108; P. argentea, Quoy and 
Gaimard, Voy. Astrol., iii., p. 345 (nec Linneus ;) N. earli, Hutton, 
CMM. (nec Reeve.) Shell oblong-ovate, depressed; apex very anterior, 
small, rather sharp, radiately ridged and striated; ridges and strie 
numerous, obtuse, slightly waved; dark olive, ornamented with obli- 
quely blood blotched broad rays; interior sub-transparent, iridescent 
(Reeve.) 
Otago. Cuming cites this species from Formosa (P.Z.S., 1865, p. 
197-) 
P. pholidota, Lesson ; Voy. Coquille, Zool., ii., p. 420; P. floccata, 
Reeve, Conch. Ic., f. 106. Shell, oval, sub-depressed, convex ; apex 
conic, placed two-thirds anterior ; margin simple, entire, regular ; upper 
surface ornamented with very fine radiating close strize, crossed by some 
concentric strice, but little pronounced. Shell thin, pale yellow, covered 
with irregular and angular spots of brownish-purple and pale brown-red ; 
interior shining silvery, speckled with purplish-brown ; the tip reddish 
and black ; in the young the interior is silvery, but covered with broad 
bands of golden reddish-brown (Lesson.) 
Length, 17 lines ; breadth, 13 lines; height, 5 lines. 
Bay of Islands. 
This species passes into the next. 
P. radians, Gwielin, 13th ed. Linnaeus Syst. Nat., p. 37203 
Chenu, f. 2847. Apex anterior; upper surface smooth or slightly 
ribbed ; colour yellowish-white, with narrow dark brown radiating bands, 
which are sometimes interrupted. 
