342 ox BORXEAK DRAGON FLIES. 



Table of distribution of genera found in Borneo. 

 J. Genera confined to Borneo. 



LineescJina, Pseudaffrionoptera, Matronoides, Ehinoneura, Stenagrion. 



II. Genera specially characteristic of Malaya or confined there- 

 to (several of these occur in Indo-China). 



Tetracantliagyna, AmpJiicescJnia, Orchitliemis, Fornothemis, Brachy- 

 goiiia, Tijriohafta, Micromerus*, Di/sphma, Devadatta, Podolestes, 

 RMnagrion, Caconeura, Ampliicnemis, Pericnemis. 



III, Genera of Oriental distril)ution, with species confined to 



Sondiac area. 



OrogompJius, Onyclwthemis, Macromidia, Asuma, Idionyr, Jagoria, 

 GompJndia, Leptogomphus, Ilacrogomplms, Ilicrogomplms, Purma- 

 gompJnis,IIeterogomphus,Vestalis,Psendop7icea,P7iinocyp7ia,Coeliccia, 

 Copera, Disparoneura. 



IV. Genera common to Oriental and Australian Regions, with 



species confined to Sondaic area. 



Agrio7ioptera, Neurothemis, Prachgdiplcac, LgriotJiemis, Camacinia, 

 Aeiagrion, Prepanosticta, Protosticta. 



V. Genera mainly Papuan or Australian, with species confined 

 to Sondaic area, 



Metapliya, Oda, PapJiisma, Teinohasis. 



VI. Palseotropical (a) or Holotropical {!>) genera, with species 

 confined to Sondiac area. 



(a) Ictinus, Tetrathemis, Rhyofliemis, JSthriamanta, Pseiulagrion, 



Ceriagrion. 



(b) GynacaiitJia. 



YII. Special cases : — 



H'ylaiotJiemis. Borneo, S. India, Ceylon. 

 Seliceschna. W. Africa, Malaya, Burma. 

 Macromia. Palajotropical, Pala.'arctic, Nearctic. 



Some negative characters showing contrast with Indo-Chinese 

 Province : — 



Absence of Cordidegastrince, relatively poor development of 



genera of Ccdopteryghice and of Brachytryon series 



of ^schnince. 

 Relative scarcity of species of the following genera: — 



Onychogomj-ihus, Lestes, Ischnura, Agriocnemis. 

 Absence of Davidius, Anisogoonphus, C'yclogom2:)hus, Gomphus, 



Fseudothemis, Sympetrum, Palpojjleura sexrnacidata, 



Bradinopyga, Anisojjleura. 



Genera not mentioned in the above table have no species 

 peculiar to the Sondiac area. 



* Mieromerus has 13 species in Malaya; one, II. lineatus, widely spread in Indo- 

 Chinese province; and one, ll.Jinalis, in Ceylon. 



