390 LAND AND Fr.KSinVATER 



peristome sinuate, double, inner lip continuous, outer expanded, 

 slightly reflected at umbilicus and partially concealing it. 



" Operculum concave in front, convex behind with a small central 

 boss or nucleus. 



"Major diam. 0-145", minor diam. 0-120", alt. 0-10", diam. of 

 aperture 0-75". 



" Uahitut. The Diyung Valley, north of Astilii, in !N^. Cachar 

 District. 



"This shell is at first sight very like A. Jtehes, Bs., but can easily 

 be distinguished by its much narrower umbilicus, its more polished 

 surface and less expanded mouth. 



" A small variety of this shell was obtained and deserves special 

 notice. The striation is wanting throughout, and the costulaliou 

 on the swollen portion of the last whorl is somewliat shorter ; in 

 these characters it approaches very near to A. nitidus, VV. Blauford, 

 from Arakan, but the recurved rib is in tliis last species much less 

 developed." 



Altc^us distinctus, G.-A. (Plate CXLV. figs. 3, 3 o, 3 h.) 

 No. 2619 B.M. Type. 



P. Z. S. 1893, p. 592. 



Alycceus ingrami, W. Blf., var., Godwin-Austen, J. A. S. B. vol. xl. 

 pt. 2, 1871, p. 92, pi. iv. figs. 3, 3 «, 3 6; id. vol. xliii. pt. 2, 

 1874, p. 150. 



Orii/lnal description : — " Differs from the described form from 

 Arakan, in the mouth being larger, and there is a tendency to 

 iindulation on the outer margin of the peristome, generally 2 

 notches are present. 



"Major diameter 0-24", minor diam. 0-24", alt. 0-16"; diam. of 

 aperture 0-11" ; sutural tube 0-09". 



" Habitat. Neighbourhood of Asalu, N. Cachar Hills. 



" This shell assimilates in some respects A. prosectus, Bs." 



I wrote in P. Z. S. 1893, as follows :— " In 1871 (J. A. S. B. pi. iv. 

 fig. 3) I figured an ^Zycfews from the Naga Hills as A.inrp-ami, var. 

 (No. 167.06.4.4 Blf. B.M. Coll.). A comparison of it with typical 

 specimens of A. ingrami from typical locality now shows me that 

 it is quite distinct, and I therefore name it distinctus. I referred 

 to the same species again in 1874 (J. A. S. B. 1874, p. 150) and 

 p,-ave the many localities where I had subsequently obtained it." 

 I then said " A. ingrami, var. is the commonest form in the Naga 

 Hills and has a great range in altitude, being found at Dimapur in 

 the Dumsiri Valley under 300 feet and as high as 7000 feet at 

 Khunho Peak on the Burrail range, also at Laisen Hill and Sikhami, 

 and on the east side of the Munipur Valley on the slopes of 

 Nougmaiching and Mungching." " I have lately received from 

 Colonel Beddome, also from the Naga Hills, examples of the same 

 shell, which have led me to recompare the two forms." 



No. 2627 B.M. is from the Lhota Naga Hills. 



