128 
Murex caurrornicus. Mur. testd fusiformi, fulvd, trivaricosd ; 
anfractibus senis, superné planulatis, transversim costatis, costis 
rotundatis, subdistantibus, ad lacinias varicum incurrentibus, in- 
tervallis costellatis, creniferis ; varicibus sex-laciniatis, supremd 
maximd alatd, deinde gradatim minoribus creniferis ; aperturd 
ovali, levi; canali.clauso, recurvo, ad basin purpurascente. Axis 
18 lin. 
Hab. California. Mus. Cuming. 
Movrex namatus. Mur. testd rhomboided, pallide luted, multiva- 
ricosd ; anfractibus septenis, inter varices areis quadratis ; spird 
subelongatd, acutd ; varicibus senis alatis, laciniis uncinatis ; aper- 
turd ovali, inferne dente parvo acuto; canali clauso, rectiusculo. 
Axis 134 lin. 
Hab. Bay of Guayaquil; from a muddy floor, in twenty-one fa- 
thoms. 
This shell, together with M. emarginatus, M.monoceros and M. Nut- 
tali, belong to a section of the genus which has been called by Con- 
rad Cerastoma. But if the marginal tooth of the aperture is to be 
regarded as sufficient grounds for separation, then I fear we must 
draw freely on some of the typical species, where its existence seems 
to have been little heeded. Mr. Swainson assigns it as a charac- 
ter of his subgenus Muricanthus or Centronotus ; but for the above 
reasons it ceases to possess any importance. In M.hamatus the situa- 
tion of the tooth on the dorsal varices is marked by a small sharp 
notch. 
Morex crrrosus. Mur. testd fusiformi, ventricosd, pallidé carned, 
formosissime multivaricosd ; suturd profundd, prope nigricante ; 
varicibus nonis sexfuriam laciniatis ; laciniis fistulosis, albis, re- 
spectantibus, gradatim minoribus ; interstitiis costis rotundatis 
lacinias incurrentibus ; aperturd ovali; labro intis levi; canal 
gracili, recurvo, fere clauso, dorso bifariam laciniato, serie supe- 
riore gemind. Axis 9 lin. 
Hab. Straits of Macassar. In fifteen fathoms, among sand and 
fine gravel. 
An uncommonly beautiful species, both from the delicacy of its 
colour, and the rich, varied, and elaborate character of its sculpture. 
Murex cravipvus. Mur. testd globose fusiformi, multivaricosd ; 
anfractibus senis rotundatis, transversim costatis, superné fusco 
fasciatis ; costulis approximatis, lamellosis ; varicibus quinis cos- 
tulis subdivergentibus transitis, postice foveolatis ; aperturd ovali, 
productd ; labro intis levi; canali longiusculo, aperto, ad sinis- 
tram inclinato. Axis 10 lin. 
Hab. Cape Blanco, west coast of Africa. From sixty fathoms. 
Murex rapicatus. Mur. testd fusiformi, pallide lutescente, multi- 
varicosd; varicibus quinis, laciniatis, antice abruptis ; laciniis 
compressis, subquadratis, medio lined duplicatis, postice medio in- 
aie ez e z 4 = . 
terstitiorum ewsilientibus ; aperturd ovali, productd ; labro intis 
levi; canali fere clauso, ad basin subrecurvo, Axis 10 lin. 
