8 



llah. aJ Iiiiulam Elizubc liae. 



The tubercles and strong spines are disposed in transverse series. 

 The angle of the body whorl is coronated \vith spines, and then fol- 

 lovv's, after an interstitial transversely striated space, a band of large 

 tubercles ; this is follovved by an intermediate space transversely 

 ribbed and striated, and towards the base is an elevated transverse 

 ridge, armed with stout but rather blunt spines ; the other whorls 

 have one row of spines only, and no tubercles. 



Found on the coral reef. — W. J. B. 



TuRBiNELLA CiESTus. Tiu-b. tcstd subrhombotded, crassissimd, 

 pondtrosissiynd, albu, nnjractu basali longitudinaliter subplicato, 

 angidato et transversim siilcato, angulo tuberculis conico acutis, 

 maximis, nrmato, suleis maximis ; cingulis basalibns tuberculaiis, 

 penultimo maximo ; columelld quadriplieatd ; labro sinuato ; epi- 

 dermide crassd, longitudinaliter striatd ; umbilico magno : long. 

 3l, Int. 3į 7^0//. 

 Hnb. ad Caraccas. 



This species approaches nearest to Turb. piigillaris, but the dif- 

 ference of shape, theextrenrie thickness and weight of theshell, the 

 smaller number but increased size of the furrovvs, the immense bulk 

 of the conical tubercles, the reduced number of ihe plaits on the 

 pillar, and the enlarged umbilicus, point it out as distinct,- — to say 

 nothing of the epidermis, \vhich is much thicker and coarser, and 

 not unlike that of Pi/ridu paiula, nobis. Turb. Ccestus varies much 

 in size, but not in character. 



It \vas found in soft mud among the rocks of the bay. — W. J, B. 



Genus Plrpira. 



Purpura XANTnosTOMA. Purp. testu ovato-acutd, ventricosd, 

 tuberculiferd , longitudinaliter subplicatd, transversim costatd et 

 interstitinliter striatd, arifractibus angulatis ; aperturdflavd, ni' 

 tente; labro iiitiis snbstriato et denticulato,striis distantibus, den- 

 tibus intermediis ; long. 3į^, lai. 2k poU. 

 Hab. ad \'alparaiso. 



The angulated body-whorl, which is nearly thrice as long as the 

 spire, is crovvned by waved tubercles. The aperture is of a shining 

 yellow, and the denticles, which are uhitish, are generally placcd 

 in pairs between the internal sti-ice of the outer lip. 



Dredged up from gravel and sand at a depth of from seven to 

 twenty-five fathoms. — W. J. B. 



A paper was read by Dr. Grant, " On the Nervous System of 

 Bero'ė Pilcus, Lam., and on the Structure of itsn7/rt." 



Dr. Grant having obtained, in September lašt, on the coast of 

 Sneppey, a specimen of tliis aninial, examined itwiih great care ; and 

 from this examination he describes it in detail as regards its external 

 form, its alimentary canal, its ovaries, and its two lengthened tenta- 

 cida, Nvhich latter organs distinguish it from the group comprehend- 

 ing Bero'ė ovalus ; and mark it as the type of a genus designated by 

 Pėron Eucliaris, and by Dr. Fleming Plciirobrachia. 



