232 Zoological Society. 



upwards of five feet in length, and presented by Wm. Craggs, Esq., 

 were exhibited. 



Numerous specimens were exhibited from Mr. Cuming's collec- 

 tion, in illustration of a Paper by Mr. Broderip, entitled, " Descrip- 

 tions of several New Species of Calyptraidtf" 



The following are the new species distributed and characterized in 

 this paper : 



Subgenus Calyptr^ea : Cal. rudis, corrugata, varia (a very vari- 

 able species, allied to Cal. equestris, and taking almost every shape 

 which a Calyptrcea can assume. It differs in thickness according to 

 localities and circumstances), cepacea, and cornea. 



Subgenus Calypeopsis, Less. Cal. radiata, imbricata, lignaria 

 (The majority of individuals of this species have their shells so de- 

 formed that they set description at defiance : the comparatively well- 

 formed shell occurs so rarely that it may be almost considered as the 

 exception to the rule. When in this last- mentioned state, the circum- 

 ference of the shell is an irregular, somewhat rounded oval, and it 

 rises into a shape somewhat resembling the back of Ancylus, with the 

 apex very sharp and inclining downwards. The shell in this shape is 

 generally less corrugated than it is in deformed individuals, though 

 some of those are comparatively smooth j but in both states the shell 

 is striated immediately under the apex, and is for the most part cor- 

 rugated on the other side of it.), tenuis, hispida, maculata, and serrata. 



Syphopatella, Less. ? Cal. sordida, Unguis, Lichen, viamiUaris, 

 striata, and conica. 



Subgenus Crepipatella, Less. Cal. foliacea (bears no remote 

 resemblance to the upper valve of some of the Chamce when viewed 

 from above), dorsata (the back of this shell is not unlike the upper 

 valve of some of the Terebratulee), dilatata, strigata (may possibly be 

 a variety of the last), Echinus (old specimens bear a great resemblance 

 to the figure of Crepidula fornicata in Sowerby's Genera of Shells, 

 No. 23, f. I.), Hystrix (approaching the last: but Mr. Broderip would 

 not be positive that they are not all varieties of Crepidula aculeala, 

 Lam.), and pallida. 



Subgenus Crepidula, Less. Crep. unguiformis. Cal. Lessonii 

 (will remind the observer of the upper valves of some of the Chamce), 

 incurva, excavata (remarkable for the depth of the internal margin 

 before it reaches the septum ; that depth, however, being less than 

 in Crep. adunca, Sow.), arenata (approaches Crep. porcellana,) mar- 

 ginalis, and squama. 



May 27. — A Letter was read, addressed to the Secretary by Sir 

 R. Ker Porter, Corr. Memb. Z. S., dated City of Caracas, April 7, 

 1 834. It related chiefly to a Monkey, and to some Tortoises, recently 

 presented to the Society by the writer. 



The Monkey is described in detail. It is the Pithecia sagulata, the 

 jacketed Monkey or Simla sagulata of Dr. Traill. Sir R. Ker Porter 

 points out the several differences in colouring which exist between 

 this individual and the published description by the Baron Humboldt 

 of the Pithecia Chiropotes : these consist chiefly in the comparative 

 paleness of its back, and the greater darkness of the remainder of its 



