1S76.] chiving the Expedition into the Dajla Hills, Assam. 317 



Bulimus gracilis, Hutton. 



Bulimus Nilagiricus, Pfr. var. The form is more elongate than those 

 I have from the Khasi Hills. It is always very local in its distribution. 

 Found tinder Torupiitu Peak at 3000 feet. 



Alt. 0-66". 



One of the forms so curiously like those of Southern India that crop 

 up in this province now and then, Cyclophorus nivicola being another 

 so like is it to G. Bairdii. 



Bulimus (Harpalus) Khasiacus, Gr.-Austen. Dikrang valley at 2500 ft. 



Strej)taxis Theobaldi, Bs. Low down in the Dikrang valley. Similar 

 to the Khasi type. I figure the aperture of this shell (pi. viii, fig. 

 15) to shew the difference between it and the following. 



Streptaxis Daeiaensis, n. sp., Plate VIII, Fig. 14. 



Sbell obliquely perforate, flatly ovate, minutely striated, white ; spire 

 much depressed, suture well marked, apex flattened, in one specimen 

 quite flat. Whorls 6|-, regular to the 4th, the 5th rapidly descending, the 

 last compressed below near the umbilicus so as to form a fold running up to 

 a second and shorter fold on the outer margin. Aperture oblique, sub- 

 quadrate, peristome slightly reflected. Parietal lamella one, strongly 

 developed and connected with the parietal callus. The palatal teeth are 

 disposed, 2 on the upper and 2 on the lowers margin, with a single inter- 

 mediate one, which extends further within the aperture than those above 

 and below it. 



Major diam. 0-32", minor diam. 0-21", alt. 0'15". 



Hab.— Near Tanir Peak, Dafla Hills, 4000 ft. 



It is a much larger, more lengthened, and flatter shell than S. Theobaldi, 

 and has a greater number of whorls. In the form of the aperture it is 

 similar to that shell, but the parietal lamella is more developed and the 

 central palatal tooth is not so remote from the peristome but rises close 

 on the margin. The umbilicus also is more open. 



Ennea stenojpylis, Shengorh Peak, not a common shell. 



Ennea milium, n. sp., Plate VIII, Fig. 11. 



Shell cylindrical, dull glassy, diaphanous. Spire with flattish sides, very 

 slightly tapering below, suture shallow. Whorls 6, the last 3 smooth, the 

 apical sub-vertically ribbed, but slightly so. Aperture oval, vertical, last 

 whorl ascending slightly to it. Peristome thickened, a little reflected, a 

 single tooth-like thickening on the outer margin, with another single one 

 on the parietal side. 



Alt. 010", major diam. 004". 



