326 HETEROMERA — TENEBEIONIDAE. 



middle ; metasternum transversely furrowed. Male with 

 a tuft of yellow hairs in middle of apex of first abdominal 

 segment. L. 10 1. Eare. B. mortisaga, Lin. 



b. Thorax scarcely narrowed behind ; length of apical 

 process of elytra f — | line. 



Black, rather dull above, shiny beneath. Clypeus with 

 a more or less distinct smooth central line, scarcely promi- 

 nent at anterior angles ; frontal suture angular in middle ; 

 elytra broadest behind middle; metasternum transversely 

 furrowed in middle. L. 9 — 11 1. Common. 



B. mucronata, Latr. 



IB, Fifth and sixth joints of antennae scarcely longer than 

 broad. 



Black, dull above, shiny beneath. Clypeus without 

 smooth central line, scarcely prominent at anterior angles ; 

 frontal suture straight in middle; elytra broadest before 

 middle ; metasternum with slight traces of a transverse 

 furrow at sides only. Male with a tuft of reddish hairs on 

 first abdominal segment. L. 9 — 11 1. Kather common. 



B. similis, Latr. 



Crypticus. 



Black, slightly shiny ; antennae and legs pitch-brown. 

 Head and thorax finely and very closely punctured, pos- 

 terior angles of latter rather prominent, rounded ; elytra 

 more finely and scantily punctured than thorax, with slight 

 traces of arrangement in rows. L. 2| — 3 1. Common. 



C. quisquilius, Lin. 



Heliopathes, 



Moderately convex. Black, shiny. Head and thorax 

 closely and deeply punctured, latter broader than long ; 

 elytra with punctured striae, deeper behind than at base, 

 interstices punctured, often wrinkled. L. 3 J — 4 1. Com- 

 mon. H. gibbits, Fab. 



Black or gray-black, dull, very closely granulate. 

 Thorax much broader than long, sides slightly rounded, 

 posterior angles prominent, with their apex rounded ; elytra 



