I9I7-] H. H. Godwin-Austen : Mollusca from Barkuda Is. 



351 



{am. or.) very long. In every respect the genitalia are similar to 

 those of the subgenus Nilgiria, as represented by .Y. histrialis 

 Beck., vide Moll. India, vol. 



11, p. 80, pi. Ixxxi, fig. 4-4a, 

 The radula differs very 



considerably from that of 

 Nilgiria histrialis both in the 

 form of the marginals and 

 in the formula, which is 38. 2. 



12. I. 12. 2.38 or 52- 1-52, the 

 marginals being unevenly 

 bicuspid, the inner cusp 

 the longest. It thus falls 

 into the group B S, vide 

 Moll. Ind. p. 82, with sola- 

 ta^ tranqiiebarica, maderas- 

 patana and ligulata, species 

 with very different shells, 

 tranqueharica being the near- 

 est to infaiista. The jaw 

 (fig. 2, B) is rather straight 

 in front with a central pro- 

 jection, similar to that of 

 histrialis. 



Fig. 



. — Ar to pliant a iufaiista. W . Rlf. 



A. Generative organs x 9, 

 B. Jaw X 9. 



The Other two land shells from this small island are Rachi- 

 sellus praeter missus, W. T. & H. F. Blf. and Opeas gracilis, Hutton. 

 I have compared this last, a single specimen, with some from 

 the typical locality Mirzapur, described by Captain Hutton. 

 There are points of difference, but a series from the Chilka Lake 

 is wanted. The genitalia of both genera appears to be unknown 

 and the specimens will be most useful when the time comes to 

 examine them. 



[The Ariophanta and the Rachisellus are both abundant on 

 the leaves of shrubs in the rainy season. In periods of temporary 

 drought they secrete a false operculum of mucus, but remain in 

 exposed positions. The Opeas, on the other hand, was found in 

 the earth under a log of wood. — N. A.'\. 



As the original blocks for the two text-figures have been lost in transit, they 

 have had to be reproduced from the proofs. 



