1868.] Proceedings of the Asiatic Society. 201 



darker in the centre, and closely marked with faint bars, and with a 

 white terminal band ; chin, cheeks, throat, breast, abdomen and under 

 tail coverts white, rufous on the flanks ami thighs, wings brown, with 

 black centres to wing coverts, secondaries and tertiaries ; quill feathers 

 brown edged outwardly with light brown. Bill, feet and claws, light 

 brown, eyes dark, under wing coverts albescent. There ap- 

 pears to be no difference in the colour of the sexes ; if anything, 

 the males are a little brighter. 



I found this bird in long grass at Dacca, where it was far from 

 being common, and I obtained very few.' — 



Should the species prove to be new, Col. Tytler suggests naming 

 it after his friend T. Verreaux of Paris ; but Dr. Jerdon is of opinion 

 that it is probably his Graminicola Bengalensis (See " Birds of 

 India," Vol. II. p. 177). The changes in the plumage of the various 

 species of SYLViDiE and allied families, are still very imperfectly re- 

 corded. 



V. Notes on new Gastropoda from the Southern Provinces of 

 Ceylon ; by Messrs. Gr. and II. Nevill. [Abstract.] 



In this paper, the following new species have been described : — 



1. Oxynoe cincta. 



2. ,, delicatula. 



3. Cylindrobulla sculpta. 



4. „ pusilla. 



5. Lobiger viridis. 



6. Delphinula tubulosa. 



7. Broderipia eximia. 



The five first named species belong to the interesting division 

 Opistliobranctiia, and the two last ones to the Scutibranchiata of 

 the Prosobranchia. 



The President then exhibited to the meeting one of the rude instru- 

 ments, for approximately determining their latitude, used by the 

 Captains of native coasting vessels, between Calcutta and Ceylon. 



He said, " While visiting the coast in the early part of the present 

 year, among other matters, I was interested in endeavouring to ascertain 

 how it was that the commanders of native vessels, some of fair size, 

 which are in the regular habit of passing from port to port along the 



