PHOT1NULA. 283 



PHOTINULA RESURRECTA Rochebrune et Mabille. 



Shell orbiculate-depressed, imperforate, conical, subopaque, solid ; 

 under a tawny, thin, rather caducous cuticle, it is white, scarcely shin- 

 ing, decussated by very fine striae and very minute spiral lines ; 

 spire conical, little prominent ; apex minute, subacute ; whorls 6i, 

 regularly and obviously increasing, separated by an impressed 

 suture (first 3 whorls a little convex) ; last whorl large, subdepressed- 

 sloping, obtusely angular at the periphery, scarcely descending at 

 the aperture ; subconvex-plane beneath and distinctly lirate ; aper- 

 ture oblique, oblong, depressed ; columella callous, oblique, obscurely 

 dentate at the base ; collumellar margin thick, oblique, emitting a 

 small thickened callous, entirely closing the umbilicus. 



Alt. 12, diam. maj. about 25, min. 20 mill. (E. & M., 1. c., p. 106.) 



Santa Cruz, Patagonia. 



PROTINULA PRUINOSA Rochebrune et Mabille. 



Shell imperforate, subglobose-conical, a little thick, solid, viola- 

 ceous, ornamented with irregular oblique strise and decussated with 

 evanescent lines, only visible under a lens ; spire turbinate, prom- 

 inent, apex minute, shining, subacute ; whorls 5-6, convex, regularly 

 rapidly increasing, separated by impressed narrowly margined sut- 

 ures ; last whorl large, above sloping, then rounded, at the periphery 

 subcarinated, at the aperture scarcely descending ; aperture oblique, 

 lunate, transversely oblong, obscurely lirate inside, shining ; per- 

 istome simple, acute, margins subparallel, outer subsinuous, basal 

 arcuate, columellar incurved ; columella twisted, incurved, a little 

 thick, callous, forming an obtuse angle at the base, and emitting a 

 thick, white, shining, slightly dilated callous closing the umbilicus, 

 and bipartite by a longitudinal sulcus. 



Alt. 7-9, diam. maj. 11-14, min. 10-14 mill. (R. & M., 1. c., p. 

 106.) 



Santa Cruz and Punta Arenas, Patagonia. 



PHOTINULA GAMMA Rochebrune et Mabille. 



Shell imperforate, orbicular-pyramidal, rather thin, solid, opaque, 

 shining, whitish or buff, ornamented with red lines, the upper 

 beaded, the lower simple, continuous ; spire conic-pyramidal, prom- 

 inent, apex subacute, red ; whorls 5J-6, depressed-planulate, rapidly 

 and regularly increasing, separated by a linear, scarcely perceptible 

 suture ; last whorl large, sloping above, compressed-rounded at the 

 periphery, subplanulate beneath ; aperture little oblique, lunate, 



