Zoological Society. 129 



in length and half an inch in depth, slightly contracted in the middle. 

 This difference in the size of the supra- tympanic cell is obviously 

 not the effect of age, as the skull of the Phase. Vombatus compared 

 is that of an old animal with strong temporal ridges. In Phase, la- 

 tifrons the articular surface for the condyle of the lower jaw is 

 broader and less convex ; the anterior boundary of the zygomatic 

 space is less angular ; the palatal surface of the intermaxillaries is 

 deeper ; the curve of the lower border of the lower jaw is much 

 deeper ; the inner angle of the condyle is less produced ; the coronoid 

 process is higher and narrower, and the post-symphysial depression 

 is almost obsolete. 



The Secretary saw with much pleasure the decisive proofs whic^' 

 Professor Owen had shown of the existence of two species of Wombat ; 

 he had many years before been himself convinced of the fact, having 

 observed that they differed in size and colour, and that one had a 

 sharp prick ear, while the ear of the other was low and elliptical. 



August 12. — ^William Yarrell, Esq., Vice-President, in the GhttflQ'-' 



" Descriptions of new species of Murex," by Lovell Reeve, Esq. :— 



J MuREx BiPiNXATUs. Muv. testd elongato-fusiformi, spird acumi' 



. ,., natO'turritd ; anfractibus septem, transversim eximie liratis et 



!jj^ ' elevato-striatis, liris striis interstitiisque subtilissim^ scabroso- 



,^,: crenulatis ; anfractibus primis sex tuberculato-nodosis, ultimo tri- 



varieoso, varicibus ultimis duobus pulcherrime fimbriato-pinna- 



tis ; nived, rosacea tinetd, columelld pallide rosed ; aperturd parvd, 



labri externi limbo minute denticulate ; canali latiusculo, subelon- 



gate. 



Hab. ? 



The Murex bipinnatus approaches the Murex clavus in general form, 



but the detail of structure and sculpture is distinct throughout. The 



spire exhibits a mass of prominent nodules, each whorl taking the 



form of a heptagon, with as many as seven on its circumference. 



The last two varices are ornamented with a handsome Iwninated 



frill structure. ,,ri^id ^'^ Ibxi ^^\'fim 



Murex sinensis. Mur. testd elongato-ovafd, snbfusiforrB, terhd, 



is, spirce suturis subimpressis ; anfractibus transversim liratis et stri- 



a atis, inter varices nodiferis ; trifariam varicosd, varicibus fron- 



)i. dosis,frondibus regularibus, curvatis, pulcherrime floridis , inciso- 



serratis ; albicante, fusco tinetd, lineis transversis fuscis ; labro 



) infra medium fortiter erecto-dentato. 



■j Hab. China. 



•?' This species appears to have been confounded for some time past 

 with the young of the Murex ramosus or elongatus. It is uniformly 

 of a thin structure, and the fronds are of a delicate open flowery 

 growth. ' lii^"' 



Murex Steeri^. Mur. testd abbreviate -fusiformi, crassd/irM^' 

 versim granoso-liratd, inter varices fortiter tubercvlatd ; trifa- 

 riam varicosd, varicibus incrassatis,frondosis, frondibus crispato- 

 ■ ramosis, subcompressis, breviusculis, fronde parvd intervenicnte ; 



