884 MOLLUSCA. 



Helicarion GiaAS, Bens., var. 



VUrina gigas, Bens., Joum. As. Soc, Bengal, vol. v, 1836, p. 350. 

 Helicarion gigas, Bens., var., Nevill, I. c, p. 24. 



A single specimen was found at Kyoukpliyoo ; though differing slightly, it is so 

 close to the shell of typical Selic. gigas, that I think there can be little doubt of 

 their identity. 



Diam. 35^, axis SJ ; apert. lat. 27^, alt. 21 mm. 



Helicabion MAGNiFiCTJM, God.-Aust. & Nev. 



Helicarion magnificus, God.-Aust. & Nevill, Joum. As. Soc, vol. xlvi, 1877, p. 24. 



I am indebted to Lieutenant-Colonel Godwin- Austen for pointing out that this 

 magnificent slug, the largest yet known of the genus, is quite distinct from Benson's 

 Helic. gigas (Khasi Hills) ; Godwin- Austen has kindly undertaken to describe the 

 animal with full details and a figure, so that it is only necessary for me here to state 

 that it is very closely alhed to the Assam species, but that the shell is much larger, 

 of a brown (not green) colour, with the body- whorl much more flatly expanded, and 

 the spire less convoluted and more depressed, and that, looked at from underneath, 

 very much less of the reflected body- whorl is visible. 



The largest specimen, in spirit, measures 70 mm. 



Shell, diam. maj. 45, axis, 11|; apert. lat. 40^, alt. 19^ mm. 



Tolerably abundant at Momien, in Yunnan. 



Helicarion ventjstum, Theob. 



Vitrina {?) venusta, Theob., Journ. As. Soc, Bengal, 1870, p. 400. 



/ Helicarion solidim, God.-Aust., Proc Zool. Soc, 1872, p. 5, pi. i, fig. la. 



Helicarion vemishcm, Nevill, I. c, p. 24. 



Dr. Anderson brought back from Ponsee, in Yunnan, numerous specimens 

 (preserved in spirit) of a small form, the shell of which I am unable to distinguish 

 from typical Arakan specimens of Helic. venustmn, only differing in apparently 

 being of a smoother and more polished texture and hi the spire being a shade more 

 distinctly convolu.ted ; a single specimen of Helic. solidum from the Naga Hills is 

 quite undistinguishable from the above Arakan specimens. The figures in the Con. 

 Indica of the two forms are, however, so distinct that the types will have to be re- 

 examined. Dr. Anderson also brought back a small specimen (in spuit) of ap- 

 parently the same form from Nampoung, in the Kakhyen Hills, found under stones 

 near running water ; the animal of this specimen differs from that of my Helic. 

 resplendens in apparently completely covering the shell and in being of a duskier, 

 more uniform coloration, apparently not speckled at all, but of a darker tinge on 



