146 Zoological Society. 



the pulli, whilst Kellia suborbicularis requires the tube to be 

 closed, as it is for some time a nidus for the full development of 

 the testaceous young. 



I am at this moment enabled to add, that I have just opened 

 a very large Kellia suborbicularis having the contents of the ova- 

 rium converted from its usual ova-like aspect into many thousands 

 of completely testaceous young further to be developed before 

 exclusion from the anomalous oviduct. 



The reason why this state of the ova has so often escaped de- 

 tection is, that the ovarium has not been examined at the genial 

 season. To see it as I have stated, we must attend to the in- 

 junction of C. Lucretius — 



" iEtheris et terrae genitabile quserere tempus." 



I have on a card many thousands of the testaceous young taken 

 from the matrix of the individual above mentioned, a part of 

 which I shall have much pleasure in forwarding to any gentleman 

 who may desire it. 



It gives me great pleasure that the question of the use of the 

 anomalous tubes is at length set at rest, and the discussion as to 

 them between Mr. Alder and myself is ended. 



PROCEEDINGS OF LEARNED SOCIETIES. 



ZOOLOGICAL SOCIETY. 



June 27, 1848.— William Yarrell, Esq., V.P., in the Chair. 



Description of fourteen new species of Helicea, from the 

 Collection of H. Cuming, Esq. By Dr. L. Pfeiffer. 



1 . Helix vitellina, Pfr. Hel. tesld angustissime umbilicatd, de- 

 presso-globosd, superne minutissime decussatd, vix nitidd T fusces- 

 centi-vitellind ; spird breviter conoided, obtusiusculd ; anfractibus 

 5 J convexiusculis, ultimo antice subdescendente, infra peripheriam 

 vix striato, juxta umbilicum contractum albo ; aperturd obliqud, 

 lunato-rotundatd ; perist ornate simplice, marginibus remotis, colu- 

 mellari albo, incrassato-rejlexo, superne subdilatato. 



Diam. 29, altit. 18 mill. 

 Locality unknown. 



2. Helix gemma, Pfr. (Vitrina suturalis, Beck MSS.) Hel. 

 testd subperforatd , conoideo-orbiculatd, tenui, Icevigatd, nitidd, 

 pellucidd, virenti-hyalind ; spird depresso - conoided ; suturd sub- 

 marginatd; anfractibus 4 vix convexiusculis, sensim accrescentibus, 

 ultimo non descendente ; aperturd parum obliqud, rotundato -lunar i ; 

 peristomate simplice, recto, margine columellari brevi, arcuato, 

 superne reflexiusculo. 



Diam. 9, altit. 5 mill. 



From the islands of Luzon and Camiguing ; collected by Mr. Cu- 

 ming. 



