332 HETEKOMEEA — CISTELIDAE. 



Cistela, 



A, Third joint of antennae shorter than fourth; third 

 joint of posterior tarsi simple. 



a. Elytra with punctured striae throughout. 



I, Tliird joint of antennae nearly as large as fourth ; 

 posterior angles of thorax nearly right angles, not 

 enclosing shoulders of elytra. 



Black, shiny, almost bare ; mouth, antennae and legs 

 reddish-yellow ; body sometimes pitch-brown or brown, 

 with or without darker head and thorax. L. ?>\ — 3f 1. 

 Moderately common. C. luperus, Herl3st. 



XjT. Third joint of antennae much shorter than fourth ; 

 posterior angles of thorax somewhat produced and 

 enclosing shoulders of elytra. 



Black, with fine, velvety pubescence ; elytra and often 

 also thorax red-yellow. Antennae somewhat sawlike. L. 

 4| — 5 1. Scarce. C. ceramhoides, Lin. 



b. Elytra with traces of striae near suture only. 



Colour variable ; usually black, with elytra and legs 

 brown ; sometimes brown, with whole or part of thorax, 

 elytra and breast lighter. Upper-side very finely punc- 

 tured, with fine and rather close pubescence ; thorax nearly 

 semicircular, narrowed in front, Q-reatest breadth somewhat 

 behind middle, sides nearly parallel before base. L. 2| 1. 

 Common. C. murina, Lin. 



B. Third joint of antennae at least as long as fourth ; 

 third joint of posterior tarsi produced beneath fourth 

 joint. 



Black, rather shiny ; mouth, antennae and legs red-brown. 

 Upper-side finely and not very closely punctured, with 

 semi-erect black hairs ; -thorax nearly semi-circular, broadest 

 at base ; elytra with striae, feeble at base, rather stronger 

 behind. L. 5 1. Not very common. C. atra, Fab. 



Mycetochares, 



Black ; shoulders of elytra, base and apex of antennae, 

 tibiae and tarsi reddish-yellow. Thorax rounded in front, 

 sides nearly parallel from middle to base. L. 2|- 1. Not 

 uncommon. 31. bipicstulata, 111. 



