i8o Memoirs of the Indian Museum. [Vol. V, 



Dr. Ris suspects that the larval forms of the two species of Macrodiplax may inhabit 

 salt water (Muttkowski, Bull. Publ. Mus. Milwaukee, I, p. 183 note). I can detect 

 no differences between the examples from Lake Chilka and those from Calcutta which 

 were taken in pure fresh water. 



In addition to Pseudagrion microcephalum , I have received specimens of the fol- 

 lowing species collected by Dr. Annandale and Mr. Kemp in the neighbourhood of 

 the lake. 



Agrioninae. 



Ceriagrion coromandelianum (Fabr.) : Barkuda Id., 2 c? d 1 , 1 9 . 



l( Abdomen gamboge yellow, brownish at tip. Legs and face paler ; dorsal sur- 

 face, side of thorax and head, including eyes, emerald green. Ventral surface of tho- 

 rax whitish." 



Ischnura senegalensis , Ramb.: common; probably breeds in the lake. 



LlBEIXUUNAE. 



Potamarcha obscur a (Ramb.) : Satpara, i6-ix-i3, 1 9 ; Barkuda Id., 17-VÜ-14, 1 <? . 



Brachydiplax sobrina (Ramb.) : Barkuda Id., 17-VÜ-14, 2 c? c?. 



Diplacodes trivialis (Ramb.) : Barkuda Id., 17-VÜ-14, 3 c? c? ; Cherria Id., 1 9; 



Patsahanipur, i-14, 1 d , 1 9 . 

 Crocothemis servilia (Drury) : Barkuda Id., 17-VÜ-14, ic?,iî. The male has a 



deformed wing, with abnormal venation; I hope subsequently to figure the 



specimen, 

 Pantala flavescens (Fabr.) : Barkuda Id., 18-19-VÜ-14, 2 c? ^2? 9 . 



With the possible exception of Brachydiplax sobrina all the species are exactly 

 the forms one would expect to meet with in such a locality as the shores of Lake 

 Chilka. In addition I have just received from Dr. Annandale the cast skin of a 

 nymph belonging in all probability to Anax gufiatus (Burm.). I have not access to 

 Cabot's account of the larval stages of the Aeschninae at the present moment, but I 

 have little doubt but that the identification is correct ; the specimen agrees substan- 

 tially with Needham ' s description and figure L of a nymph from Buitenzorg which he 

 regards as belonging to Burmeister' s species. The skin was " found on a rock at the 

 edge (of the lake) near Patsahanipur ' ' and Annandale remarks that the dragon-fly 

 must breed in the lake. This view is further supported by the fact that the skin has 

 attached to it some six very small shells, evidently the young of a species of Modiola 

 very likely M. striatula, Hanley. 



Lastly, the series includes two females of a species of Agriocnemis taken at Bar- 

 kuda Id., 17-VÜ-14, — another genus likely to be represented in coastwise country. 



1 Proc. U. S. Nat. Mus., XXVII, p. 695, pi. xl, fig. 2 (1904). 



