The Nautilus. 



Vol. VII. FEBRUARY, 1894. No. 10 



A NEW SPECIES OF PATELLA. 



BY H. A. PILSBRY. 



Patella kermadecensis n. sp. 



Shell large and massive, conical, the apex subcentral ; slopes of 

 cone nearly straight ; outline short ovate, slightly narrower in front. 

 Exterior whitish, apparently strongly ribbed when perfect, but the 

 specimens described are everywhere deeply eroded. Border lightly 

 scalloped by the ribbing, and finely puckered at the edge. Muscle- 

 scar roughened, strongly marked, and either white or bright orange ; 

 rest of the interior white, stained in places with livid-brown or 

 purplish. 



Length 135, breadth 115, alt. 48 mm. 



Length 111, breadth 102, alt. 45 mm. 



Habitat, Kermadec Is. 



The two specimens above described, of this large species of the 

 subgenus Scutellastra, were sent to me by Mr. E. W. Roper, of 

 Revere, Mass., who obtained them from the original collector. The 

 species can be compared only with P. patriarcha Pils. from the Cape 

 of Good Hope, and P. mexicana Brod. & Sowb. from West Mexico. 

 The former of these is a wider, more angular species ; the latter is 

 more oblong, and has more obvious primary ribs. Figures will be 

 published later. 



