1865.1 Contributions to Indian Malacology. 97 



Bens., but has flatter whorls, a sharper keel, a more acute apex, and 

 rather less strongly marked sculpture. 



A small turbinate species of Gyclophorus, which I found at a con- 

 siderable height on the Arakan hills between Prome and Tongoop, 

 with a rounded periphery and very narrow umbilicus, requires compa- 

 rison with G. scurra, Bens. Another form, with a subangulate peri- 

 phery, was met with in Bassein district, and a third, rather larger, but 

 otherwise identical, in Ramri island. All of these may be varieties of 

 the same shell. All possess a very narrow umbilicus, a thin white 

 expanded lip, and minute sculpture. 



None of the small discoid Cyclophori, so far as I am aware, occur in 

 Pegu. G hispidulus, W. Blanf., I described in a previous paper as 

 occurring at Mya Leit Doung, Ava. G. calyx, Bens, is stated by 

 Mr. Theobald to occur at Akoutoung, Pegu, and that locality has been 

 quoted for it by Mr. Benson in describing the shell, and repeated by 

 Pfeiffer in Suppl. Mon. Pneum. p. 56. I think some mistake must 

 have been made by Mr. Theobald in arranging and labelling the very 

 extensive collections which he made in 1854-55, for the shell abounds 

 in Molmein, while, although I have repeatedly searched all round the 

 Akoutoung hills, I have not met with it. 



Leptopoma. 



In a previous paper (J. A. S. B. for 1862) reference was made to 

 the occurrence of the Tenasserim L. aspirans, Bens., in Arakan, near 

 Tongoop, and in the Bassein district of Pegu. It was found in great 

 abundance in Long Island in the Bassein river. I also found speci- 

 mens close to Akyab, in the hills on the opposite (south) side of the 

 harbour. Some of these last are rather larger than the typical form, 

 and measure 14 by lOJmillemetres in the two diameters and 12 in 

 height ; they are also smoother, wanting the raised spiral lines, and 

 the last whorl is rounded or subangulate near the mouth : but other 

 specimens are scarcely distinguishable from typical shells from Tenas- 

 serim, among which also some of the above characters, and especially 

 the sculpture, are variable. 



Pterocyclos. 



Pt. pullatus, Bens., has only been found near Akoutoung. In 

 Arakan, near Tongoop, and again at Akyab, I found a species closely 

 allied to Pt. parvus, Pearson. The Akyab specimens possess their 



