96 Contributions to Indian Malacology. [No. 2, 



it at Rangoon, close to the Pagoda, abundantly south of Bassein, and 

 at Tongoop in Arakan. At Akyab I found some dead specimens, 

 which may possibly belong to this species, but they are thinner, with 

 a rather narrower umbilicus, and less broadly expanded peristome, and 

 one specimen is subangulate at the periphery. In these characters 

 they appear to be intermediate between the Burmese G. speciosus, 

 Phil., and the Khasi hill G. Pearsoni, Bens. 



At the base of the Shan hills, and also at Mya Leit Doung, I found 

 the small species referred by Mr. Benson to G. cornu venatorium, Sow. 

 Some living specimens at the former locality shewed the operculum to 

 be normal. 



At Mya Leit Doung occurs also C. cryptomphalus, Bens, of which 

 I obtained fresh specimens, with the colour and epidermis perfect. 

 When in this state, it is the handsomest of the Burmese Gyclophori, 

 and equal in beauty of colouring to G. Siamensis, Sow., the dark 

 blackish brown colour of the upper surface of the shell contrasting 

 finely with the irregular zigzag white lines. The mouth, in my 

 specimens, shews no distinct duplication : it is much thickened and 

 expanded, as in C. speciosus or C. Siamensis. 



G. fulgnratus, Pfr., I did not find further north than Puppa hill. 

 At Thayet Myo and Prome it is very abundant, and it occurs more 

 sparingly throughout the Prome and Henzada districts, together with 

 G. Theohaldianus, Bens, and G. patens, W Blanf. G fulguratus is a 

 handsome shell, varying greatly in size, my largest specimens from 

 Thondoung, south of Thayet Myo, measuring 38 millem. by 30, the 

 smallest, a dwarf specimen, also from Thayet Myo, only 20 millem. 

 by 15J. 



Mr. Theobald, in a paper published in this Journal for 1863, 

 (XXXIII. p. 376,) classes my G. patens as a variety of G. fidguratus. 

 The types of both species occur together at Thayet Myo, and are very 

 distinct, C. patens having a broad, rather thin disk-like expanded 

 peristome, while the lip of G. fulguratus is much thicker but only 

 moderately expanded. G. patens also is much smoother. However, 

 intermediate forms may possibly occur, as they do between many other 

 Burmese species. 



At Tongoop in Arakan, and on Ramri island, I found a variety of 

 the large G. aurauliams, Sebum, It approaches G Theobaldiauas 



