202 liRAGHKLYTKA — ALEOCIIAPxIDAE. 



shorter, abdomen a little less closely punctured. Scarce. 



H. difficilis, Bris. 



H J». Head considerably broadened behind the 

 eyes. 



ct II, Seventh abdominal segment with apex 

 of dorsal plate triangularly emarginate in 

 middle. 



A a. Abdomen black, more or less pale 

 toward apex, closely and finely punctured 

 throughout. 



A 1, Base of thorax with a distinct de- 

 pression in middle. 



a 1. Elytra a little longer than thorax. 



Head l)lack ; thorax and elytra pitchy or brown ; an- 

 tennae and legs yellowish, former rather short, a little 

 thickened toward apex. Colour variable. Upper sur- 

 face of head convex. L. 1 1. Common. H. analis, Gr. 



b 1. Elytra as long as thorax. 



Coloured like IT. analis. Male with upper surface of 

 head l)roadly impressed and ventral plate of seventli ab- 

 dominal segment considerably produced, with a bunch of 

 five or six black hairs at apex. Female with notch of 

 seventh abdominal segment broader and deeper than in H. 

 analis. L. scarcely 1 1. Scottish hills. 



H. cavifrons, Sharp. 



JB 1. Base of thorax with an indistinct 

 depression in the middle. 



Flatter and more parallel-sided than H. analis. Pitchy, 

 antennae and legs yellowish. Elytra a little longer tlian 

 thorax. Punctuation closer than in H. analis and cavifrons ; 

 sexual characters as in latter. L. scarcely 1 1. On banks 

 of Nith, Scotland. H. simillima, Sharp. 



1> h. Abdomen unicolorous black ; more 

 closely and distinctly punctured than H. 

 analis. 



Coloured like a dark H. analis. Male with the head 

 more or less distinctly channeled ; seventh abdominal 

 segment with a much deeper and wider notch than in that 

 species, and its ventral plate distinctly produced and 



