218 Dr. F. Ris on new 



arculiis (proximnl to seconrl antenorlal) and in the confio-ura- 

 tion of the eyes, tlie ])osferior lobe of the prothorax, and the 

 genital seoi)ients in female. 



'^rype of venation between Crocothemis and Bradinopyga ; 

 dififeiing from both by configuration of eyes and of posterior 

 lobe of protliorax. 



^n regard to eyes and ])rnthora\' nearest to Rliodothemis. 

 Spinas of legs not so markedly differentiated as in R/iodo- 

 therm's. More im])ortant differences from that genus : 

 (1) discoidal area in front wing with 3 rows of cells to level 

 of nodus, (2) Cui in hind wing at anal angle of t., (3) 2 rows 

 E,s.-E.s)il., (4) 4-5 rows between A3 and wing's edge in hind 

 wing, (5) last Anq. in hind wing incomplete, apparently an 

 almost regular and therefoi'e veiy curious feature. 



Cyanothemis will find its place in our systematic arrange- 

 ment of Libellulinse immediately preceding Rhodothemis. 



Head moderate ; eyes meeting scarcely more than in a 

 point ; occipital triangle very large. Frons very prominent, 

 rounded, without anteiior ridge, and not flattened anteriorly ; 

 furrow moderate. Vertex broadly convex, very slightly 

 eniarginate. 



Posterior lobe of protliorax large, erect, divided into two 

 rounded lobes, ciliate. Thorax robust. Legs comparatively 

 short, robust. Male with third femora armed in proximal 

 Iwo-thirds with about 10 moderately robust spines, increasing 

 in length very gradually, 3-4 longer spines at end; second 

 femora with about 7 small, giadually lengthening and 2 

 terminal long spines. Spines of tibiae long and robust, 8—9 

 on third tibire. Teeth of tarsal claws robust, in distal third. 



Abdomen rather short, relatively broad, depressed ; mode- 

 rately widened at base dorso-ventrallj, very gradually nar- 

 rowed to end. No distinct transverse carina on fourth segment. 

 Genitalia of second segment small, the hamule with regular 

 external branch. For genital segments of female see under 

 the species. 



Wings long, reticulation serrate, t. in front wing on a 

 level with t. in hind wi)ig. Sectors of arculus with a long- 

 common stalk in both wings. Arculus between Anq. 1 and 2. 

 Cuj in hind wing at anal angle of t. Anq. 12^-14^, last 

 Anq. incomplete in hind wing as well. Pioximal side of t. 

 in hind wing at arculus. 1 Cuq. in all wings ; noBqs. t. in 

 front wing narrow, crossed, t. in hind wing crossed ; lit. 

 free ; ti. in front wing 3-celled. Mo feebly double-curved. 

 2 rows Rs.-Rspl. Cuj in front wing strongly convex ; 

 discoidal area considerably widened to end ; 3 rows to level 

 of noduSo 1 row j\I^-J\[spl. Anal area of hind wing broad. 



