570 Zoological Society. 



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

 the five varices. 



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

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

 cancellatis: varicibus quinque ad septem, alatis, Icevibus, postice 

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

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

 subrecurvd: aperturd ovali, postice angulatd ; mar gine externo per- 

 elevato, subcrenato ; canali clause. 



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



Hab. ad insulam Japan. Mus. H. Cuming. 



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

 rices in each whorl. Found in deep water. 



MuREX iNERMis, Couch. lUustr. f. 87. Mur. testa fusiformi, 

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

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

 caudd elongatiusculd, tortuosd: varicibus sex, leviter noduliferis, 

 postice paululum prolatis, ultimo latiore, crassiore : aperturd 

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

 crenulato; ad basin canalis tuber culo 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, Couch. lUustr. f. 83. Mur. testdparvd, crassd, 

 subrhomboided, albo-rubescente, ad varices fusco-nigricante : spird 

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

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

 costatis ; spinis brevibus, paululilm crispatis, una ad angulum posti- 

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

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

 labio externo crenulato, extante; canali fere clauso. 



Long. -95; lat. ex. var. '47 poll. 



Testdjuniore : caudd elongatd, valide ascendente. 



Var. Testd breviore : varicibus validioribus : aperturd rosed. 



Hab. ad insulam Masbate, Phihppinarum. 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, Couch. Illustr. f. 100. Mur. testd rhom- 

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

 turam et canalem cequante; 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 exths crenulato ; canali fere 

 clauso. 



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

 matis. 



Long. '75; lat. ex. var. '40; lat. var. inch -50. 



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



