1881.] Mollusca of the In do- Malayan Fauna. Ill 



in the collections of MM. Morelet and Crosse and found to he unmis- 

 takeably of one and the same species. The variety, so well described 

 and figured by Baudon in the Journ. de Conch. 1879 as var. Folini, 

 differs but very slightly, scarcely sufficiently to justify its separation, 

 even as a variety, this was evidently also the opinion of M. Baudon 

 when he wrote, I. c 1877 p. 173, " J'ai recu de MM. Benllon and de 

 Folin de nombreux specimens de 8. longiscata des Basses Pyrenees par- 

 faitement semblables au type de Morelet." I found the variety Folini 

 tolerably abundant both at Biarritz and Bayonne. The differences between 

 8. elegans and 8. longiscata are well shown by M. Baudon's excellent 

 figures, /. c. 1879, PL XI, fig. 6 and fig. 5 ; the former being 8. longiscata 

 and the latter 8. elegans. 



SUCCHTEA YARKAKDENSIS, 11. sp. PL V, Fig. 10. 

 Moll. Yarkand Mission, 1878, as S. pfeifferi, Rsm., var. 



Shell oval, comparatively somewhat thick, of a bright amber colour, 

 last whorl throughout closely, regularly, and undulately striated, stria 

 though distinct somewhat superficial, or not deeply incised ; spire shortly 

 produced, strongly twisted, abruptly and strikingly bent back, apex some- 

 what obtuse ; whorls 2j, the last very large in proportion, narrowly pro- 

 duced, that is not tumid or ventricose ; aperture considerably everted, 

 very long in proportion to its breadth, margins joined by a small amber 

 coloured callosity, columellar margin not thickened, nearly straight, beauti- 

 fully gradually rounded at base. 



Long. 11, diam. 6 ; apert. alt. 7f, lat. 4 mil. 



Hab. — Yarkand and Sasak Taka (Kashgar) ; coll. Dr. Stoliczka. 

 Since I wrote my account of the Mollusca of the Yarkand Expedition, I 

 have been able to collect and carefully examine numerous forms of the 

 European 8uccinece, and have also had the advantage of studying the 

 excellent and elaborate monographs of the French species by MM. Bour- 

 guignat and Baudon (J. de C. 1877 and 1879) ; I now consider this 

 Yarkand form as a distinct and well characterized species, nearest 

 allied to 8. contortula, Baudon ; the few whorls, the remarkable way in 

 which the spire is abruptly bent back, the distinct and regular, though 

 superficial, striatum, especially noticeable near the columellar margin, the 

 everted aperture, &c. all enable the species to be distinguished at a glance 

 from others of the group of Sue. pfeifferi. 



Type, Indian Museum, Calcutta ; also in coll. von Martens and Bouvier. 



Genus Hyalimax, H. and A. Adams. 

 Gen. Moll II, 1855, as subgenus of Limax, type Limax per lucidus, Quoy (insuffi- 

 ciently described) ; ampl. Fischer, J. de C. 1867, as genus allied to Suecima. 

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