188 BRACHELYTRA — ALEOCIIAEIDAE. 



a a. Antennae not at all thickened toward 

 apex ; length 1 line or less. 



A a. Length 1 line. 



A 1, Sixth abdominal segment more dif- 

 fusely punctured than basal ones. 



a 1. Antennae elongate, yellowish, joint 

 five half as long again as four, last 

 joint only a little longer than tenth ; 

 apex of abdomen yellowish. 



Flat. Head and thorax black-brown ; elytra dark-brown, 

 paler toward apex ; legs red-yellow. Head slightly nar- 

 rowed in front, with a distinct impression ; thorax gently 

 narrowed behind, with a distinct central furrow. Rare ; 

 Scotland. H. eximia, Sharp. 



b 1. Antennae slender, pitchy, joint 

 five about equal to four, last joint 

 about one-third longer than tenth ; 

 abdomen entirely black. 



Flat. Head and tliorax black ; elytra pitchy ; legs red- 

 yellow. Head nearly square, witli a distinct depression ; 

 thorax a little narrowed behind, with a slight central 

 furrow, rising from a shallow basal depression. Not un- 

 common, ff. frafjilis, Kr. 

 _B 1. Abdomen very closely and finely 

 punctured all over. 



Flat. Black ; antennae pitchy, slender ; legs reddish- 

 brown. Head nearly square, with an indistinct depression ; 

 thorax scarcely narrowed behind, central furrow not very 

 distinct. Scarce. H. longula, Heer. 



Ji b. Length not exceeding f line. 



A 1. Antennae nearly as long as head, 

 thorax, and elytra ; abdomen closely 

 punctured all over. 

 Linear, fiat. Dark brown, elytra paler, antennae and 

 legs yellowish. L. f 1. Very rare. 



H. dclicatula, Sharp. 



jK 1. Antennae rather longer than head 

 and thorax ; abdomen more diffusely 

 punctured toward apex. 



Linear, rather fiat. Head pitchy; thorax and elytra 



