142 Gr. Nevill— New or little-known [No. 3, 



In my Hand-list I attributed this genus to Prof. Fischer, which was 

 scarcely strictly accurate. I am indebted to Mr. Wood- Mason for the 

 generic identification of a new slug, lately found at the Andamans by Mr. 

 de Boepstorff, undoubtedly belonging to Hynlimax. This, I consider, a 

 very important discovery, especially as bearing upon my statement, in the 

 introduction to this paper, of the remarkable affinities between the land 

 Mollusca of the Mascarene Islands &c. and those of the Andaman and 

 Nicobar groups &c. 



Hyalimax is not known from Continental India or Ceylon ; whereas 

 three species are known from Mauritius and Bourbon, one from the Nicobars, 

 described. by Morch in 1872 as Hyalimax remhardti, and finally the new 

 Andamanese form, now for the first time recorded. I trust Mr. Wood- 

 Mason will shortly carry out his present intention of giving us a detailed 

 description of this curious " slug." I should not be surprised if Parmella of 

 Mr. H. Adams, described from the Fiji Islands in the P. Z. S. for 1867, 

 prove to be an allied form to Hyalimax? 



LlMNAEA PHILIPPINENSIS, n. sp. 



Shell scarcely rimate, small, horn coloured, conically globose, longitudin- 

 ally striate under the lens ; spire short, apex rather pointed ; whorls four, 

 the upper ones very small, scarcely convex, the last one very large in 

 proportion, tumidly ventricose ; aperture ovate, large, proportionately 

 unusually broad, margins joined by a thin callosity, outer margin boldly, 

 convexly rounded ; columella straight, very slightly twisted, broadly 

 reflected, rounded at base. 



Long. 8£, diam. 5^ ; apert. alt. 6f , lat. 4 mil. 



Hab. — Lucban, Luzon (Philippines), coll. R. Hungerford Esq. 



This is a small species of the group of Limnaea peregra, closely allied 

 to the next species, of which indeed some conchologists may prefer to rank 

 it as a geographical variety. Both perhaps are geographical races, or 

 subspecies, of L. ollu/a, Gould, P. B. S. 1869 from Hongkong, sent me from 

 that place and also from Swatow by Surgeon-Major Hungerford, which 

 again = L. pervia, Martens. 



Limnaea andersoniana, Nevill, PI. V, Fig. 9. 



J. Asiat. Soc. Bengal, 1877, p. 26, Yunnan at 4000 ft. ; var., Nevill, Moll. Yar- 

 kand Exp. 1878, p. 9, Yarkand, not the var., I. c. from North Tangitan and Kashgar, 

 which is L. pervia, Mart. ( = Z. ollula, Gld.). 



Limnaea yunnanensis, Nevill, PI. V, Fig. 8. 

 J. Asiat. Soc. Bengal, 1877, p. 27, Sanda in Yunnan, 



