570 Zoological Society. 



Distinguished by the thick, straight, prominent frond on each of 

 the five varices. 



MuHEx FALCATUS, Conch. Illustr. f. 31. Mur. testa fusiformi, 

 tenui, albd, fulvo-fasciatd; anfractibus angulatis, apicem versus 

 cancellatis: varicibus qiiinque ad septem, alatis, Icevibus, postici 

 elongatis, falcatis, ad marginem posticum plica involutis, ad cau- 

 dam exfoliatis: interstitiis in medio uni-plicatis : caudd elongatd, 

 subrecurvd: aperturd ovali, postice angulatd ; margine externo jJer- 

 elevato, subcrenato ; canali clauso. 



Long. 1'55; lat. ex. var. '65. 



Hah. ad insulam Japan. Mus. H. Cuming. 



A beautiful species with five to seven broad, smooth, fohated va- 

 rices in each whorl. Found in deep water. 



MuREX iNERMis, Conch. Illustr. f. 87. Mur. testa fusiformi, 

 transverse leviter costatd, albd : spird elongatd, acutd; anfractibus 

 septem, rotundatis, ultimo pyrifonni ; suturis validis, foveolatis : 

 caudd elongatiusculd, tortuosd: varicibus sex, leviter noduliferis, 

 postice ijaululum prolatis, ultimo latiore, crassiore : aperturd 

 ovali; labio interno, extante, Icevi; labio externo crasso, intiis leviter 

 crenulato; ad basin canulis tuberculo valido; canali aperto. 



Long. 1; lat. ex. var. "40 poll. 



Hab. ad mare Japonicum. Dr. Sibbald legit. 



This singular shell has some of the characters of Triton. 



MuREX BALTEATUS, Conch. lUustr. f. 83. Mur. testd parvd, crassd, 

 subrhomboided, albo-rubcscente, ad varices f usco-nigricante : spird 

 subproductd ; anfractibus sex, angulatis : caudd breviusculd, exfo- 

 liatd, recurvd : varicibus sex, antice inciso-fimbriatis , a tergo 

 costatis ; spinis brevibus, paululum crispatis, una ad unguium posti- 

 cum, deinde brevioribus quatuor, ad caudam duabus mimitis, rectis: 

 apertwd ovali ; labio interno postice prolato, antice valde extante; 

 labio externo crenulato, extante ; canali fere clauso. 



Long. "95; lat. ex. var. "47 poll. 



Testd juniore : caudd elongatd, validi ascendente. 



Var. Testd breviore : varicibus validioribus : aperturd rosed. 



Hab. ad insulam Masbate, Phdippinarum. H. Cuming legit. 



The name given above has been applied to this shell by Dr. Beck, 

 who, however, has not described it. Found in coral reefs. 



MuREX CYCLOSTOMA, Conch. Illustr. f. 100. Mur. testd rhom- 

 boided, subventricosd, pallide griseo-fulvd : spird longitudine aper- 

 turam et canalem aquante; anfractibus quinque, exiguis, rotundatis, 

 transverse costatis ; suturis validis, excavatis : caudd brevi, latd, 

 recurvd, exfoliatd : varicibus sex, angulatis, crassis, magnis, 

 utrinque costatis, antice inciso-fimbriatis, postice foveolatis, su- 

 perne subspinosis : aperturd ovali rotundatd, fere integrd; labio 

 interno Icevi, extante ; labio externo extiis crenulato ; canali fere 

 clauso. 



Variat caudd elongatd, valde recurvd: varicibus spinis crispis ar- 

 matis. 



Long. '75; lat. ex. var. "40; lat. var. incl. '50. 



Hab. ad insulam Bohol PhiUppinarum. H. Cuming legit. 



