2 6 GARRETT: ON POLYNESIAN MITRID^. 



with similar examples in my possession. In his description 

 he does not allude to the crenulated peristome which is 

 precisely the same as in M. Ticaonica; that is the crenula- 

 tions occupy nearly the whole length of the lip. 



The whole shell is longitudinally strigated with narrow 

 white and deep brown stripes of nearly equal size, so that it 

 is difficult to decide which is the ground color. With few 

 exceptions all have a transverse whitish line on the upper 

 portion of the body whorl. Perfect shells are invested with 

 a thin translucent epidermis which gives the white strips a 

 tawny-yellow color. The aperture and columella are dark 

 brown with whitish plaits. 



They vary in the convexity of the body whorl as 

 in the length of the spire. The transverse impressed lir.es 

 also vary in distinctness and are sometimes obsolete. 



51. Mitra subtexturata, sp. nov. 



Shell solid, ovate, cinereous, with a white aperture ; 

 spire short, less than half the length of the shell ; whorls, 6, 

 flat, last one large, strongly convex ; sculpture consisting of 

 moderately sized angular spiral ribs, 14 on the body, 5 on 

 the penultimate whorl, the narrow interspaces very scabrous 

 with crowded longitudmal lamince-like striae, and the whole 

 shell more or less longitudinally guttered ; columella, with 5 

 plaits, and the peristome thick and crenulated; length 19, 

 diam., ii mill., (Coll. Garrett.) Hab., Society Islands. 



The animal is greyish-white, closely maculated with 

 small irregular milk-white spots. The end of the siphon and 

 the upper anterior portion of the foot stained with deep 

 brown. 



We obtained several examples in the upper region of 

 the laminarian zone, sandy bottoms, at Raiatea Island. 



It is somewhat related to M. texhirata, but may be 

 distinguished from that species by its uniform pale color, 



