IIOMALOTA. 221 



2. Body short and broad. 



A A. Elytra oiie-tliird longer than thorax ; ab- 

 domen distinctly punctured. 

 Scarcely shiny. Black ; legs pitchy-yellow. Head short 

 and much narrower than thorax, which is nearly twice as 

 broad as long. L. f 1. Eare. H. crihrata, Kr. 



J5 jB. Elytra about as long as thorax ; abdomen 

 indistinctly punctured. 

 Very broad and short. Dark l^-own ; base of antennae 

 and legs reddish-yellow. Head short and much narrower 

 tlian thorax, which is more than twice as broad as long. 

 Pubescence distinct. Abdomen flat above, convex beneath, 

 sides rounded. L. 1 1. Eare ; Chatham. H. notha,YjX. 



Placusa, 



A, Abdomen extremely closely and finely punctured 



throughout. 



a. Length 1 line. 



Black ; elytra generally yellow-brown ; base of antennae 

 and legs yellow. Male with two small tubercles before 

 apex of seventh abdominal segment, apical margin pro- 

 duced into two spines on each side and finely toothed in 

 middle. Scarce. P. infima, Er. 



h. Length 1^ — 1| lines. 



Eather flat. Black ; base of antennae and the legs 

 yellowisli, posterior femora darker ; elytra Ijrownish-yellow. 

 Thorax narrower than elytra, transversely convex, not 

 quite twice as broad as long, base sinuate on each side, 

 posterior angles nearly right angles. Male with two 

 tubercles before apex of seventh abdominal segment, apical 

 margin produced on each side into a curved spine, between 

 which spines are three linear teeth, the outer ones being 

 bifid. Eare. P. denticulata, Sharp. 



JB, Abdomen closely punctured at base, less closely at 

 apex. 



Black ; elytra brown, base darker ; base of antennae and 

 legs yellow. Male with upper-plate of seventh abdominal 

 segment produced into a spine on each side, its apical 

 margin thickened in middle, L. | — 1 1. Not uncommon. 



P. piimilio, Er. 



