356 LAND AND FEESnWATER 



Only three specimens were found. The form recalls that of 

 A. gemmala, lis., of Darjiling, but has distinctive characters by 

 wliich it may be readily known. Blanford only obtained a single 

 specimen of A. gemmula, and Benson recorded it as very rare. 

 >evill records only two specimens in the Indian Museum. I have 

 since obtained quite a large number from the hills east of tlie 

 Teesta Piver. 



Alyo^tjs khasiactjs, G.-A. 



Godwin-Austeu, J. A. S.B. 1876, vol. xlv. pt. 2, p. 175 = mw- 

 tatus, G.-A. 



"Hah. One specimen of the true typical form was found in the 

 Yetay ravine, iJikrang Dhun." Closer comparison shows that I 

 came to a hasty conclusion ; this Datla shell is more globose in form, 

 and differs particularly in the spire, which is higher. No. 2(552 

 B.M. 



Alyc^us khasiacuSj var. Dafla. 



" The rest of this type from other parts of the hills, however, 

 differ from the Khasi form in the ridge in front of the constriction 

 being single, and the peristome more thickened and reflected. But 

 in size, sculpture, and the short thickened sutural tube, as well as 

 in the operculum, no change is to be detected." 



" Hab. Valley of the Dikrang and Borpani." 



This is also A. mutatus described further on. 



Alyc^ds macgregori, n. sp. (Plate CXLI. figs. 2, 2 a, 2 b.) 

 Type No. 2621 B.M. Coll. 



G. Nevill, Hand-l. i. p. 292, No. 25. 



Ah/cams var. nagaenis, G.-A., 2 Shengorh, Dafla Hills, Coll. 

 Major Godwin-Austen. 



Loculili/. Dafla Hills. 



Sbell openly umbilicate, globosely turbinate ; sculpture close, 

 fine regular costulation on the swollen portion of the last wliorl 

 following the sutural tube, it contracts bebind this and the ribbing 

 becomes much finer and wider apart ; colour bleached ; spire 

 depressedly conoid, apex small ; suture well-impressed ; sutural 

 tube moderately long ; whorls 4, the first from aperture to sutural 

 tube short, plain, ?. e., Avith no ribbing, then much swollen and 

 contracted again showing well on under sides ; aperture circular, 

 obliijue ; peristome moderately thickened, slightly reflected, within 

 it is feebly plicate ; columelhir margin rounded. 



Size : maj. diam. 7"0, min. 5-5 ; alt. axis 2-5 mm. 



At a hasty glance I had named this shell A. nagaensis. On a 

 closer examination and comparison with that species it differs very 

 materially, being much more globose as regards its form, and having 

 crenulation within the aperture. I name this species after Capt. 



