HI 



December 9, 1834. 

 William Yarrell, Esq., in the Chair. 



Specimens were exhibited of three species of the genus Bulinus, 

 Lam., which were regarded by Mr. G. B. Sowerby as previously un- 

 described. He characterizes them as follows : 



Bulinus leucostoma. Bui. testd ovatd, ventricosd, antice latiore, 

 postice ohhisd ; anfractibus quatuor, prhnis longitudinaliter sub- 

 sulcatis, ultimo maximo, Icevi, omnlbtts olivaceo-fuscis , suturd pal- 

 lidiore, crenulatd ; aperturd oblongd, postice actiminatd, peritre- 

 mate reflexo, albo : long. 2' 6, lat. 1'4 poll. 



Hab. in provincia Peruvise Xagua dicta. D. Matthews. — Mus. 

 D. MDler. 



Mr. Gray is of opinion that this is Bui. granulosus of M. Rang. 



Bulinus badius. Bui. testa ovatd, ventricosd, postici subacumi- 

 natd ; anfractibus quinque, rotundatis, longitudinaliter striatis, 

 fulvescentibus fusco fusciatis, fasciis i7iterruptis ; umbilico mi- 

 nimo ; aperturd ovatd, postice subacutninatd ; peritremate tenui, 

 acuta: long. 1', lat. 0' 6 poll. 



Hab. in provincia Peruvi?e Xagua dicta. D. Mattheivs. — Muss. 

 DD. Miller, Cuming, et Sowerby. 



Bulinus bicoloe. Bui. testd oblongd, postice subacuminatd, pal- 

 lescente, fasciis interruptis fuscis ; anfractibus quinque, subventri- 

 cosis, ultimo majore ; umbilico minimo ; aperturd subovatd, pos- 

 tice acuminatd ; peritremate tenui, subacuto : long. 0'9, lat. 0'4 

 poll. 

 Hab. in provincia Peruvise Xagua dicta. D. Matthews. — Muss. 

 DD. Miller, Cuming, et Sowerby. 



The specimens were brought to England by Mr. Miller, to whom 

 the Society is indebted for their exhibition. 



The reading was concluded of a Paper entitled " Notes on the 

 Natural History and Habits of the Ornithorhynchus paradoxus, 

 Blum.," by Mr. George Bennett, Corr. Memb. Z. S. ; in which the 

 author gives a detailed account of his inquiries and researches on 

 the subject in question, made in the Colony of New South Wales, 

 and in the interior of New Holland, at the end of 1832 and com- 

 mencement of 1833. He commences by a description of the exter- 

 nal character of the animal, as observed by him in the living and 

 recent state ; from which it appears that the greater or less degree 

 of nakedness of the uuder surface of the tail is dependent on age, 

 and is probably a result of the mode in which that organ trails upon 



No. XXIV. PllOCEEDINGS OF THE ZOOLOGICAL SoCIETY. 



