144 



boided, irregulari, transverse minute striata, grised, lineis albis 

 inter fasciis fuscis cinctd : spird mediocri ; anfractibus septem, 

 subangulatis : caudd brevi, latd, exfoliatd : varicibus quatuor ad 

 quinque subdecumbentibus , paululum rotundatis, ante quadrifariam 

 denticulatis, uno dente magna prope caudam subextante, una mi- 

 nore : interstitiis tuberculo magna : aperturd magnd, postice sub- 

 angulatd ; labia externa, dente magna prope canalem extante, 

 intiis denticulata, canalifero ; canali aperta. 



Long. 225 ; lat. ex. var. r20 poll. 



Hab. ? Mus. Norris. 



A very remarkable shell in the collection of J. Norris, Esq., with 

 a large tooth on the anterior part of the outer lip, resembling that 

 in Monaceras. 



M UREX FASCiATUS, Conch. Illustr. f. 86. Mur. testd rhambaided 

 crassd, transverse costatd, albd, vel pallide fulvd,/usco-bifasciatd: 

 spird breviusculd ; anfractibus sex, subratundatis, paululum angu- 

 latis : caudd brevi, crassd, campressd, subumbilicatd : varicibus 

 tribus, rotundatis crassis, costatis : interstitiis tuberculo valida, 

 elongato : aperturd ovali, postice subcanalif era ; labia interna lavi; 

 labia externa crenulata, intiis dentata ; canali nisi ad cxtremitatem 

 clausa. 



Long. 1*20 ; lat. ex. var. '65 poll. 



Hab. ad oras Africanas (River Gambia). 



MuREX VARius, Conch. Illustr. f. 57, 104. Mur. testd crassd, sub- 

 rhomboided, ventricasd, subscabrosd, j)allide fulwi, fusca-fasciatd ; 

 rubro-lineatd, lineis extantibus siibmaniliformibus transverse sul- 

 catd: spird mediocri; anfractibus septem, primis angulatis, ultimd 

 subratundatd: caudd brevi, latd, crassd, exfoliatd: varicibus quinque 

 ad septem, decumbentibus , prope angulum posticum d terga tumu- 

 losis ; tuberculis subspinasis, una ad angulum brevi, 'crassa, sub- 

 crispato, turn aliquanda tribus minutis, deinde tribus majusculis, 

 ad caudam una subelangato : aperturd magnd, subratundatd, pos- 

 tice subangulatd ; labia interna leevi, crassa ; labia externa crenu- 

 lata; canali aperta. 



Long. 2 35 ; lat. ex. var. 1"50. 



Hab. Gambia. Mus. Cuming. 



MuREX TUMULosus, Conch. Illustr. f. 71. Mur. testd clavatd, ven- 

 tricasd, pallidifulvd,fusco-bifasciatd, transverse scabraso-sulcatd : 

 spird brevi ; anfractuum suturis excavatis : varicibus septem, va- 

 lidis, crassis, costatis, ante crenulatis, pane excavatis, ad suturas 

 tumulasis ; ad medium anfractuum spinis duabus subelangatis, 

 rectis ; ad caudam spinis tribus : caudd elongatd : aperturd magnd, 

 avali, postice subangulatd; antice margine sub-producto, intiis 

 crenulata. 



Long. 3'60 (caudce, 2-3); lat. ex. var. 1 30. 



Hab. ? Mus. Stainforth. 



This species diflfers from M. carnutus, in the thickness of the va- 

 rices, which are excavated behind. The sutures of the spine are 

 also excavated. 



