I9I7-] F. F. LATDI.AW : Indian Dragonflies. 339 



brown below, and the general colour of the abdomen is rich brown 

 not black. ' 



The adult of the Bornean race is very distinct in appearance 

 In fact It bears at first sight a close likeness to certain 'species of 

 Laconetira (especially to Caconema veriicalis, Selys) with which I 

 have more than once received it The rich brown-red colour of the 

 legs and the almost entirely black body give it an appearance 

 strikmgly unlike that of other species of the genus. 



Specimens from Kwala Aring in the Malay Peninsula identified 

 by me as C. atomaria, Selys {Proc. Zool. Soc. Lond., 1902, p. 356) are 

 all immature and their proper designation must remain' doubtful. 



Legion III. Pi^atysticta, nov. 



Rather large or moderate-sized Agrionid dragonflies, with a 

 long and rectangular quadrilateral, without supplementary sectors, 

 A b absent, or (probably) represented by a nerve descending /^o/;^ 

 the lower side of the quadrilateral to join ^c or the hinder margin of 

 the wing. C«, represented only by Cw,,, Cu, normal or reduced 

 Pterostigma trapezoidal. Wings falcate, a supplementary basal 

 post-costal nerve always present. Body generally very slender 

 legs with long cilia. 



Distribution :— Tropical America, Tropical Asia to New Guinea. 



The distinctness of the forms included in this new ' Legion ' 

 from the Protoneura—Disparoneura series, can scarcely be ques- 

 tioned, especially when the more primitive members of each series 

 are compared together. 



,.^ ^^^ following are the genera of the 'Legion' with their 

 ditterentiating characters :— 



A. Cuy extending beyond half the wing length. 



Palaemxema, Selys. 

 Type: P. paiilina (Drury). 

 Distribution : Tropical America. 



B. Ciii not reaching half the length of the wing. 



I. RS markedly fractured. 



Ab present, joining Ac. Sectors of arculus not stalked. 



PlATYSTiCTA, Selys. 



Type : P. maculata, Selys. 

 Distributions : Ceylon, S. India. 

 II. /?i" straight. 



a. Ab present, joining Ac, or hinder margin of wing 'sec- 

 tors of arculus ' stalked. 



Drepaxosticta, nov. 

 T^pe : D. ca rmichaeli (\.a\d]aw). 



b. Ab absent. 



Distribution : Ceylon, India, Burmn, Ton- 

 kin, Malaya to New Guinea. 



Pkotosticta, Selys. 

 Type: P. simplicinerois, Selys. 

 Distribution : S. India, Himalaya, .Mala\- 

 Peninsula, Borneo, Celebes. 



