4 Dr. P. P. CarpentLT on new Forms of Mullasca 



265^. Phasianella (i compta, var.) piiUoides. 



P. testa P. ^?<//o simillima; soliila, compacta, spira breviore ; suturis 

 distiiictis. Long. '2, long. spir. '1, lat. 'IS, div. 55°. 



Hab. Sta. Barbara {Jeiuett) ; Monterey, 20 fathoms (State 

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

 {Cooper), 



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



P. testa perparva ; spira elongata, ut in P. pulh picta ; anfractibus 

 subplanatis ; suturis baud impressis ; columella baud lacuiiata. 

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



Hab. Sta. Barbara [Jewel t), 



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

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

 In so difficult a tribe, it is judged better to name the di.stnict 

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



276. Trochiscus convexus. 



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

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

 impressis ; obtusissime bicarinatis, striolis confertissiinis, minimis, 

 subobsoletis cinctis ; umbilico majore, costis duabus cincto, quaruni 

 interior acuta, exterior rotundata, crenata ; apertura circulari. 

 Long. "15, long. spir. 06, lat. 'lo, div. 90°. 



Hab. Monterey [Jewel f). 



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

 cal species appear smistral, as in Pboridse and Solariadse. The 

 operculum also resembles that of Solarium rather than of Tro- 

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

 notwithstandmg its nacreous texture. 



317. Hipponyx lumens. 



n. testa normaliter fornicata, rotundata, albida ; epidermide rugulosn, 

 interstitiis pilulosa ; vertice nucleoso nautiloideo, Isevi, paiuin tti- 

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

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

 vatis, distantibus, spiralibns, aliis intercalantibus ; lineis incre- 

 menti minoribus decussantibus ; margine acute ; apertura ple- 

 rumque rotundata : cicatrice musculari a margine parum reniota, 

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



Hab. Sta. Barbara [Jewell); S. Pedro [Cooper). 



= '' H. Jsubrufa" + '' Capufus, 213/' Brit. Assoc. Ptep. 1857, 



p. 230. 



^ 282 



