294 BKACIIELYTRA — STENIDAE. 



are distinctly longer than tlie thorax, scarcely so long as 

 that part. 



h b. Maxillary palpi black, with base yellow. 



Ajt. Body deep black ; second joint of 

 palpi entirely black. 



Deep black, shiny ; first joint of palpi, and base of 

 femora abruptly, yellow ; middle of tibiae brownish-yellow. 

 Surface very uneven ; head with shiny central ridge and 

 two interrupted lateral elevations ; thorax with an inter- 

 rupted central furrow rather behind middle and a transverse 

 depression in front ; elytra very coarsely and closely punc- 

 tured ; abdomen rather coarsely punctured at base and sides 

 of segments. L. 2| 1. Eare. S. Guyneineri, Duv. 



J> b. Body leaden-black ; second joint of 

 palpi yellow at base. 



Leaden-black, rather sliiny; antennae generally brown in 

 middle ; first and base of second joint of palpi yellow ; 

 legs coloured as in S. jyrovidus. Kather narrower than S. 

 s2Jceulator, with broader head, narrower thorax and stronger, 

 more diffuse punctuation. Central furrow on thorax not 

 very distinct. L. 2\-~^2\ 1. Not common. 



S. lustrutor, Er. 



jB 7>. Third joint of antennae not much longer 

 than fourth ; length 1-| — If lines. 



a a. Legs pitch-black, with basal half of 

 femora and sometimes apex of tibiae red- 

 brown. 



A a. Thorax rather longer than broad, as 



long as elytra, with a tolerably distinct 



central furrow. 



Black, dull ; pal])i with first and basal half of second 



joint yellow. Frontal furrows deep ; punctuation of fore 



parts close and strong, of abdomen moderately close, rather 



strong. L. If 1. Not common. S. proditor, Er, 



li b. Tliorax as long as broad, distinctly 



shorter than elytra. 



Less slender than S. j^roditor. Leaden-black, slightly 



shiny ; second joint of palpi almost entirely black. Frontal 



furrows broad and shallow ; punctuation of fore parts 



moderately close and deep, of abdomen not very close and 



