XXI. NOTES ON SOME INTERESTING 

 I.ARVAE OF DRAGONFI.IES (ODONATA) 

 IN THE COIvLECTION OF THE 

 INDIAN ]\IUSEUM. 



By F. F. I,AiDi.Aw, M.A. 



ZYGOPTERA 

 UBELLAGINAE. 

 Rhinocypha unimaculata, Selys. 

 Larvae i a* , i 5 Kalimpong, Darjiling Dist., Apr.-May, 1915. 



F. H. Gravely ^ . 

 ■'Hi 



Determined from venational characters. The specimen is a 

 male in the last instar, its total length is 19-5 mm. It lacks the 

 lateral triquetral gills. In general the specimen bears a resem- 

 blance to that of the larva of Micromerus lineatus, Burm. 

 (Eraser, Rec. Ind. Mus. XVI, 1919. pp. 197-198, pi. xxiii)! From 

 examination of this specimen I can add the following to his account. 

 The tergite of the eleventh abdominal segment is present, unmodi- 

 fied as a gill, and apparently identical in structure with the appen- 

 dix dorsalis of the Anisoptera. 



The gizzard consists of sixteen folds. Each carries a single 

 row of about five conical teeth, distant from each other. I cannot 

 make out any differentiation into major or minor folds. 



This larva, and equally that of Micromerus, exhibit certain 

 l^rimitive characters, especially in the mask, the gizzard, and in 

 the possession of an unmodified appendix dorsalis. 



They approach in some respects the larvae of the Caloptery- 

 ginae, whilst remaining I think rather less specialized. They show 

 no evidence of near relationship to the Epallaginae. This is rather 

 surprising as the venation of the adult has by most students been 

 regarded as indicating a fairly close connection between these two 

 subfamilies. 



Their structure certainly emphasized the desirability of accord- 

 ing the group subfamily rank. 



SYNLESTINAE. 

 Megalestes major, Sel3^s. 

 (Text-figs. 1-3.) 

 3 examples; Pashok, 5,500 ft. ^-~' 



