APHELOCHIRINA. 43 



FAMILY 1. LIMNOBATID^E. 



Head horizontal, as long as the thorax, widest on the anterior 

 margin of the clypeus ; Face very short, narrow, deflected ; cheek- 

 plates long, projecting. Antennae inserted at the end of the 

 widened front of the head ; first joint stoutest and shortest ; third 

 longest. Thorax much wider than the head. 



Abdomen flat above, convex beneath ; Connexivum reflexed, narrow in the 

 $ broad in the ?, gradually diminished from the middle to the base and 

 apex, not produced into a point posteriorly ; Genital segments in $ quad- 

 rangular, in short, obtuse ; in both sexes terminating with a small 

 superior incurved spine. Gen. 1, Limnobaies. 



Div. 2.-CRYPTOCERATA.* 

 Sub-I)iv. 1. LITORALIA. 



Contains only the Genus Pelogonm, Latr., which is 

 wanting in Britain. 



Sub-Div. 2. AQUATILIA. 

 SECTION I. APHELOCHIRINA. 



Acanthiidee, p., Westiv. 

 Aphelochiree, Fieb. 



Head (including the eyes) triangular, deeply set in the pronotum ; 

 Face on the same plane as the Crown. Antennae 4-jointed, simple. 

 Eyes posterior, oblique. Rostrum 3-jointed, very long, aculeate; 

 Labrum triangular. Pronotum broad, transverse ; posterior margin 

 longer than the breadth of the abdomen. Elytra coriaceous through- 

 out ; Embolium triangular. Prosternum concave at the sides. 

 Legs : first pair raptorial, inserted anteriorly on the disk of the pro- 

 sternum ; GOXCB large, long; thighs compressed, first pair broadest and 

 shortest ; tarsi all 2-jointed, and with two claws. 



Abdomen broad, oval, the margins serrate. 

 * Page 11. 



