Zoological Society. 533 



One of the most delicate and fragile of the Helices, which in ge- 

 neral form somewhat resembles our common Helix aspersa ; the white 

 interrupted lines, as well as the two white bands, consist of hydro - 

 phanous epidermal matter. 



Helix brunnea. Hel. testa subglobosd, crassiusculd, laevi, obscurd, 

 brunned, albido nigroque fasciatd ; spirdbrevi, obtusd; anfractibus 

 quatuor, subrotundatis , ultimo maximo, ventricoso ; aperturd late 

 semilunari ; peristomate nigro, subexpanso, crassiusculo, reflexo ; 

 labio columellari lato, albo ; columelld declivi, incrassatd, alba. 

 Long. 1-3; lat. 1*7 poll. 



Hab. supra folia arborum, prope Puerto Galero ad insulam Min- 

 doro dictam, Philippinarum. 



Usually of a rich brown colour, the circumference having a black 

 band posteriorly, and a whitish band anteriorly, in front of which 

 there are several whitish and brown bands alternately : the circum- 

 ference of the columellar lip is nearly black. 



May 25. — William Yarrell, Esq., Vice-President, in the Chair. 



A letter was read from the Society's Corresponding Member, J. 

 M'Clelland, Esq. It states that several Birds and Quadrupeds had 

 been forwarded from India for the Society's Menagerie, and likewise 

 that Mr. M'Clelland had sent a collection of the rarer Indian fresh- 

 water fishes for the Museum. 



Some notes, from Sir Robert Heron, Bart., were next read. These 

 notes relate to the breeding of Gold-fishes in the author's menagerie. 

 Sir R. Heron observes, that about two out of five of the specimens 

 hatched are deficient of the dorsal fin, and about two in a hundred, 

 or rather more, have a triple tail- fin, and as many have the anal fin 

 double. All the deformed fishes are separated from the others and 

 placed in a pond by themselves, but they do not produce a greater 

 proportion of deformed offspring than the perfect fishes. 



The following paper, by George Gulliver, Esq., F.R.S., entitled 

 " Observations on the Blood-corpuscles of the order Ferae," was then 

 read. 



" It appears to me that a systematic and comprehensive set of ob- 

 servations is yet wanting on the blood- corpuscles of the different 

 orders of the class Mammalia, for the subject is interesting in con- 

 nexion with physiological questions now perpetually arising, and 

 which may be expected to multiply as inquiries in minute anatomy 

 are extended. 



" In the order Ferae the result of my observations will show that 

 the size of the blood- discs has a general relation to the different 

 families. Although some exceptions may appear, these will probably 

 fall into order as our knowledge of the subject becomes more com- 

 plete ; and it must be recollected that zoologists differ as to the exact 

 affinities of a few of the animals in question. 



" In the Insectivora the size of the corpuscles is considerably 

 smaller than in the Plantigrada. The corpuscles of this latter fa- 

 mily are very uniform in size, and, as far as I have at present ob- 

 served, larger than those -Of the other species of the Ferae, with the 



