64 G. M. Giles — On the Structure and [No. 1, 



156. Taractroceba sagara, Moore. 

 Rare. Taken in May and August. 



157. Halpe BETURiA, Hewitson. 



Common. Generally keeps liigli up amongst trees. 



158. Hyarotis adrastus, Cramer. 

 Rather common. 



159. Tagiades RAVI, Moore. 



Rare, rests with out-spread wings, often on the underside of a leaf. 



160. Tagiades khasiana, Moore. 



As above ; somewhat plentiful in the rains. 



161. Udaspes folus, Cramer. 

 Rather common. 



162. Coladenia tissa, Moore. 



I have taken a single male specimen in February in a garden at 

 Alipur. In the rains another brood appears, which differs from the cold 

 weather generation in having the ground-colour of both wings umber- 

 brown, instead of ochreous, and all the black spots and markings more 

 prominent. 



163. Hesperia galea, Fabricius. 



Decidedly rare in Calcutta, but occurs throughout the year. 



V. — Natural History Notes from H. M.'s Indian Marine Survey Steamer 

 * Investigator, Commander Alfred Carpenter, R. N. Commanding. 

 No. 1. On the Structure and Habits of Cyrtophium calamicola, a 

 new Tuhicolous Amphipod from the Bay of Bengal. — By G. M. 

 Giles, M. B., F. R. C. S., Surgeon-Naturalist to the Marine Survey. 

 (With Plate I.) 

 [Received 6th March ; — Read 1st April, 1885.] 

 The little organism I am about to describe is one of the numerous 

 objects that are found in the surface-net about the Palmyras shoal and 

 mouth of the Dhamra river on the Orissa Coast. To this, or, at any 

 rate, to such situations, it appears to be confined, for it was not met with 

 either in the deep water of the Bay of Bengal, or in the clear blue 

 shallow water about the Cheduba archipelago. 



Shortly after commencing surface-net work in the above locality, 

 I noticed amongst the hauls a body moving with tolerable activity, 

 in appearance much like a morsel of drift wood. It swam about the 

 tube in which it had been placed for observation in a nearly upright 

 posture, sometimes upwards, sometimes obliquely across it, at others 

 allowing itself to sink to the bottom. On closer examination, the four 

 antenna) of a minute crustacean were seen protruding from one end j 



