4 Dr. P. P. Ciii-penter on new Forms of Mollusca 



265 b. Pliasianella (? compta, var.) pulloides. 



P. testa P. /)m//o similliraa ; solida, compacta, spira breviore ; suturis 

 distinctis. Long. '2, long. spir. -1, lat. 'IS, div. 5.5°. 



Hab. Sta. Barbara [Jewett) ; Monterey, 20 fathoms (State 

 Coll. no. 353). Smaller var.j 8-10 fathonis, Catalina Island 

 {Cooper). 



265 c. Pliasianella (? compta, var.) elatior. 



P. testa perpaiva ; spira elongata, ut in P. pullo picta ; anfractibiis 

 subplanatis ; suturis baud impressis ; columella baud lacuiihta. 

 Long. -19, long. spir. '12, lat. -11, div. 40°. 



Hah. Sta. Barbara {Jewett). 



P. compta, with a large proportion of the small shells of the 

 genus, is included under P. pullus in Mr. B.eeve's monograph. 

 In so difficult a tribe, it is judged better to name the distinct 

 forms, and those from separated localities, until more is known. 



276. Trochiscus conveocus. 



r. testa parva, subelevata, purpureo-fusca, tenuiter sculpta; anfr. nucl. 

 ? sinistralibus, vertice quasi decoUato ; norm, iv., convexis, suturis 

 impressis; obtusisslme bicarinatis, striolis confertissirais, minimis, 

 subobsoletis cinctis ; umbilico niajore, costis duabus cincto, quaruin 

 interior acuta, exterior rotundata, crenata; apertura cuculari. 

 Long. -15, long. spir. '06, lat. -L"), div. 90°. 



Hab. Monterey {Jewett). 



The nuclear whorls in this unique little shell and in the typi- 

 cal species appear sinistral, as in Phoridee and Solariadse. The 

 operculum also resembles that of Solarium rather than of Tru- 

 chus. The genus may prove to belong to the Proboscidifers, 

 notwithstanding its nacreous texture. 



317. Hipponyx lumens. 



H. testa normaliter fornicata, rotundata, albida ; epidermide rugulosfi, 

 interstitiis pilulosa ; vertice nucleoso nautiloideo, lavi, parum tii- 

 mente, apice celato, interdum persistente ; dein rapiuissime an- 

 gente, expansa, undique regulariter arcuata ; liris acutis, subele- 

 vatisj distantibus, spiralibus, aliis intercalantibus ; lineis iucre- 

 menti minoribus decussantibus ; margine acuto ; apertura ple- 

 rumque rotundata : cicatrice musculari a margiue parum reuiota, 

 regione capitis valde interrupta. Long. •?, lat. •46, alt. "33, div. 90°. 



Hab. Sta. Barbara (/ei«e/<) ; S. Pedro (Coo;)er). 



= " H. tsubrufa" + " Capulus, 213," Brit. Assoc. Rep. ]857, 



p. 230. 



^ 282 



