AGRIONID^. 645 



longitudine. Abdomen olivaceum ; sutures, vittce duce dorsa- 

 les totidemque ventrales latissima nigrce, abdominis maximam 

 partem occupantes. Pedes nigro-fusci. 



Libellula dispar, Pal. Beauv. 

 Guinea. 



Sub-gen. 2. KHINOCYPHA. 



Quadrilateralis longior, venulis numerosis. Abdomen paullo 

 depressum. 



Mas. Alae ex parte opacae. 



Rhinocypha, Ramb. Hist. Nat. Ins. Neur. 232. 

 Calepteryx, p., Burm. 

 Libellago, p., De Selys- 



Epistoma very tumid and prominent : labium divided even to 

 tbe base into two triangular narrow obtuse parts ; labial palpi nar- 

 rower than tbe labium, tbeir penultimate joint much shorter, with 

 its internal angle prolonged and terminated by two spines, or one 

 bifid spine ; last joint slender, filiform, almost cylindrical, nearly as 

 long as the preceding : abdomen shorter or hardly longer than the 

 wings; upper appendages a little more simple than those of Calep- 

 teryx : legs tolerably long, finely fringed ; claws of the tarsi not per- 

 ceptibly divided towards the tips : wings rather narrow, with a 

 variable reticulation, a little pediculated, or with the hind border 

 not extending to the base ; humeral part much shorter than the 

 radial part; pterostigma like that of the Libellulides. 



Tropical Asia. 



Sect. 1. 



Statura minor. Mesothoracis angulus semper brevis, triangu- 

 laris. Ala3 plus minusve angusta?, areolarum postcostalium serie 

 unica. 



Group 1 . Type L. tincta. 

 Mas etfcem. Ala3 quatuor colorata?, maculis vitratis nullis. 



