24 Records of the Indian Museum. [Voiv. XIII, 



Calopteryginae, and equivalent to Kirby's Agrioninae. Further 

 I propose in this series of notes to use the term Agrionidae as 

 equivalent to Kirby's Coenagrioninae. I am aware that this is 

 opposed to the views and practice of authorities on nomenclature. 

 I comfort myself with the reflection that if I sin, it is in good 

 compan^^ Needham [loc. cit.) allows three subfamilies for existing 

 Calopterygidae. One of these, Thorinae, is entirely (tropical) 

 American. The second which he calls Vestalinae I prefer with 

 Tillyard to label Calopteryginae; the third is his Epallaginae, less 

 the genera Rhinocypha, Micronierus, Lihellaoo (and Rliinoiieiira). 

 I propose to erect a separate subfamily the Libellaginae to contain 

 these. They form a compact natural group readily distinguished 

 from the Epallaginae their nearest relatives. I admit that they 

 are probably a specialized offset from the Hpallagine series, but it 

 is I believe convenient to contrast them with t3^pical members of 

 that series. 



In the matter of quotations I give references as a rule only to 

 papers published subsequently to Kirby's Catalogue of Odonata, 

 and to that invaluable work of reference. 



The following list of the Calopterygidae recorded from the 

 Indian Empire includes 14 genera, or 66 per cent of the genera found 

 in the Oriental Region, and no less than 35 per cent of all existing 

 genera known ; allowing 40 genera for the whole world. And this 

 wealth is the more striking in that Peninsular India and Ceylon 

 are by no means rich in genera or species of the family. 



The Indian genera fall into two main categories. 



A. — Genera largely confined to the mountain-systems of the 

 North-East, often extending east to China and even Japan. 



Calopteryginae. Epallaginae. 



Mnais. Bayadera. 



Matrona, A nisoplenra. 



Caliphaea, Philoganga. 



B. — Genera with wide distribution in Indo-Malaya. 



. Calopteryginae. Epallaginae. Libellaginae. 



Nenrohasis. Pseudophaea. Rhinocypha. 



Vestalis. . Microjnerus. 



LastW, Echo extending through Assam and Burma into 

 China, reaches also down the Malay Peninsula into 

 Sumatra. 



Group (A) can be reinforced by sections of the genus Rhino- 

 cypha. viz. uniinaculata and trifasciata. 



Group (B) might reasonably include the section fenestrata of 

 the same genus. 



It will be noticed that Ceylon and Peninsular India have only 

 representatives of group B. 



