94 Dr. Sharp's Bevision of the 



H. Abdomen more or less distinctly narrowed; hinder 



ANGLES OP THE THORAX ROUNDED. 



(Groups XIX.— XXII . Species 1 26—157) . 



Section A. 



Group I. Ahdomen with the sixth segment nearly im- 

 punctate. Male with a tubercle or Jceel on the upper side of 

 the sixth abdominal segment. (Species 1 — 7). 



The seven species contained in this group form a really- 

 natural and well-defined cluster. H. languida is found 

 in marshes, as is also sometimes H. pavens ; the others 

 occur only on the banks of rivers and lochs. 



1. Homalota ciirrax. 



Depressa, sat lata, nigro-fusca, subtiliter punctata, pe- 

 dibus obscure testaceis, antennis tenuibus, apicem versus 

 haud incrassatis ; thorace basin versus angustato; elytris 

 thorace longioribus ; abdomine supra segmentis 2-5 sat 

 dense punctatis, segmento sexto Isevigato. Long. 2 lin. 



Mas; abdomine segmento sexto dorsali medio ante 

 apicem tuberculo acuto, 7° apice denticulis 4 instructo ; 

 segmento 7° ventrali producto. 



H. currax, Kr. Ins. Deutsch. ii. 198 ; Wat. Cat. Brit. Col. 



A large, dark species, with slender legs and antennae, 

 and close and fine punctuation. The antennee are as 

 long as the head, thorax, and half the elytra, pitchy- 

 black, the basal joints pitchy, slender, not thickened 

 towards the apex, each joint considerably longer than 

 broad, the second and third of about equal length ; from 

 the fourth to the tenth each joint slightly shorter than 

 the preceding one ; the eleventh joint abovit half as long 

 again as the tenth, about the length of the first joint. 

 Head black, broad, but evidently narrower than the 

 thorax, with a distinct longitudinal impression on the 

 upper surface ; very finely punctured, the palpi pitchy- 

 testaceous. Thorax narrower than the elytra, about as 

 broad as long, the sides rounded in front, then evidently 

 narrowed behind the middle ; the base a good deal 

 rounded, so that the posterior angles are very obtuse ', 



