372 Zoological Society. 



fractibiis septem vel octo rajMm longitudinaliter decrescen- 

 tihus ; costellis prope aperhiram minus prominentibus, costis 

 ad p^osticum marginem in tuberculis postich terminantibus ; 

 aperturd postice latiusculd, antice subacutd ; labia externa 

 tenui, intus denticulate ; labia interna intus denticulata, varice 

 *■- prominent e mar ginato ; dorso antice extus striata ; canali lan- 

 givsculo ; margine peritrematis purpurea-brunnescente. 



Length, y*^ of an inch ; width, -/^ of an inch. 



Hab. Port Essingtoii. Cab. (specimen unicum) Gaskoin. 



Cypr.'ea Clara. Testa subcylindracea-ovalis, rufescenti-cinerea, 

 antice et postice supra extremitate maeuld brunned ornata ; fas- 

 ciis latis saturatiaribiis tribus ; basi marginibusque albescenti- 

 bus ; aperturd latiusculd subspirali ; labia externa crassiuscula, 

 dentibvs circa viginti-sex, regularibus, prominentibus ; interna 

 subspirali, dentibus circa viginti ; sulco columellari profunda 

 latoque, intus denticulata ; marginibus rotundatis, incrassatis ; 

 extremitatibus obtusis, punctis minutissimis nigris notatis. 



Length, l-^ inch ; width, J^ of an inch. 



Hab. ? Cab. Cuming. 



This species is of the stamp of Cyp. Isabella, Linn. 



3. On thk Pterodactyles of the Chalk Formation. 

 By J. S. Bowerbank, Esq., F.U.S. etc. 



On the 1 4th May 1845 I exhibited at the Meeting of the Geological 

 Society the snout and under jaws, extending from the point to about 

 the middle of the cavitas narium, of a new and gigantic species of 

 Pterodactylus, with some other bones, a portion of which belonged 

 to the same individual, and others which have every appearance of 

 having belonged to another animal of the same species *, and I then 

 stated my belief that the bone figured by Prof. Owen, in the ' Trans- 

 actions of the Geological Society,' vol. v. pi. 39, 2nd Series, would 

 probably viltimately prove to be that of a Pterodactyl, From the 

 great size of the snout, and the gigantic proportions also indicated by 

 the bones accompanying it, I was induced to give it the specific name 

 o^ giganteus. On a subsequent occasion, June 9, 1817, I continued 

 Kiy remarks on these Reptile remains, in a paper entitled " Microsco- 

 pical Observations on the Structure of the Bones of Pterodactylus 

 giganteus and other fossil animals," in which I endeavoured to prove, 

 by the strongly-marked peculiarities of the bone-cells in Mammals, 

 Birds and Reptiles, that the whole of the bones described in my former 

 paper, and those figured by Prof. Owen in the Trans. Geol. Soc, 

 2nd Series, vol. vi. pi. 39. figs. 1 & 2, were in truth of purely Repti- 

 lian character ; and I also figured a radius and ulna from the Cabinet 

 of Mrs. Smith of Tunbridge Wells, of nearly the same gigantic pro- 

 portions as the one formerly in the possession of the Earl of Ennis- 

 killen, but now in my collection (fig. 1. pi. 39, Geol. Trans.), and a 

 bone from the Cabinet of Mr. Toulmin Smith, equivalent to that 

 represented by Prof. Owen in the same plate, fig. 2, which bones 

 presented the same structural evidence of their Reptilian nature, and 



* Quart. Geol. Journ. vol. ii. p. 7. pi. 1 figs. 1-6. 



