HELCIOXISi U.S. 139 



Patella denticulata MARTYX, Univ. Conch, i, t. 65 (1784). P. 

 imbricata KEEVE, Conch. Icon. f. 95 (1855), not P. imbricata Linne. 

 P. reevei HUTTOX, Man. X. Z. Moll. p. 108 (1880). Patinella 

 reevei HUTTON, Proc. Linn. Soc. X. S. Wales, ix, p. 376 (1884). 



Differs from other Xew Zealand species in the closely scaled ribs, 

 opaque " rust orange " or fleshy central area of the interior, etc. It 

 is a solid species, attaining a considerable size. 



Reeve referred denticulata Martyn to P. granularis as a synonym 

 and made a new species, "imbricata" of the New Zealand shell. 

 Hutton has followed Smith in mistaking the P. ornata Dillw. (mar- 

 garitaria Chemn.) for Martyn's shell an error immediately de- 

 tected by a reference to the excellent figures in the Universal Con- 

 ch ologist. 



In order to finally settle the name and synonymy of this species, 

 I have copied Martyn's original figures on my plate 68, figs. 23, 24. 



P. RADIANS Gmelin. PL 69, figs. 25-39 ; pi. 23, figs. 4, 6, 7, 8. 



Shell ovate, depressed, thin but solid, slightly narrower in front, 

 the apex at the front fourth or fifth, not prominent. Surface 

 sculptured with decidedly separated, narrow radiating riblets, hav- 

 ing a number of smaller riblets (sometimes obsolete), in each inter- 

 val, and decussated by fine, crowded growth-strise, often obsolete, 

 but usually cutting the surface just in front of the apex into fine 

 granules. Color bluish-white, usually buff 1 around the apex, striped 

 in a divaricating pattern, or irregularly blotched and rayed down 

 the ribs with brown or olive. 



Interior buffish-olive, with a silvery luster, showing the color- 

 markings of the outside, having a white or brown central callus, 

 often ill-defined. 



Length 44, breadth 34, alt. 8 mill, (typical form). 



Throughout New Zealand; Australia. 



P. radians GMEL., Syst. Xat. xiii, p. 3720 (1789). HUTTOX, 

 Man. Mar. Moll. X. Z. 1880, p. 108 ; Trans. X. Z. lust, xv, t. 16, f. E 

 (dentition). P. argentea Q. & G., Voy. Astrol. Zool. iii, p. 345, t. 

 70, f. 16, 17 (1834). P. argyropsis LESSOX, Yoy. Coquille, p. 419 

 (1830). P. radiatilis HOMBR. & JACQ., Ann. des Sci. Xat. (2), 

 xvi, p. 191 (1841). P. decora PHIL., Zeitschr. f. Mai. 1848, p. 162 ; 

 Abbild. t. 3, f. 3. RVE., Conch. Icon. f. 33. Patinella radians 

 HUTTON, Proc. Linn. Soc. X". S. Wales, ix, p. 336 (1884). Patella 

 earlii REEVE, Conch. Icon. f. 71 (1855). P. flexaosa HUTTOX, Cat. 



