14 



ADEPHAGA. 



H, OBLIQUUS, F. 



than sixteen British species. The shape of the sedeagus and its side 

 lobes form a valuable character, and Dr. Joy has, by dissecting out 

 these parts in several of the species, proved their distinctness. The 

 new species mentioned in the paper are my var. pallens of H. conjinis 

 (Brit. Col. i. 153), which Mr. Edwards now raises to specific rank, H. 

 fnlvicoUis, Er., H. heydeni, Wehncke, H. wehnckei, Gerh. (= immactt- 

 latus, Newbery), and H. immacidatns, Gerh. {nee Newbery). It is 

 probable that there will be one or two other species, if not more, to be 

 brought forward. 



We give Mr. Edwards' table : 



I. Elytra with sub-regular rows of shallow 



punctures : 

 i. Base of thorax without a longitudinal im- 

 pression opposite the fourth row of elytral 

 punctures. Prosternum not margined, 

 coarsely punctured ..... 

 ii. Base of thorax with a longitudinal im- 

 pression, bounded outwardly by a distinct 

 ridge, opposite the fourth row of elytral 

 punctures. Prosternum margined, finely 

 punctured. 



1. Pale yellow, black lines on elytra obsolete 

 on the basal fourth. Thorax little more 

 than two and a half times as broad as 

 long, less contracted in front 



2. Usually red-yellow, black lines on the 

 elytra complete to the base. Thorax at 

 least three times as broad as long, more 

 strongly narrowed in front . 



II. Elytra with regular rows of deep punc- 



tures : 

 i. Base of thorax without a longitudinal im- 

 pression on each side opposite the fourth 

 row of elytral punctvires. 

 1. A row of large punctures across the base 

 of the thoi-ax. 

 A. Elytra without dark mai'kings. Front 

 edge of thorax not roundly produced in 

 the middle. 



a. Head large, more than half as wide 

 as the base of the thorax. Body sub- 

 elliptic with parallel sides. Front edge 

 of thorax biconcave, produced into a 

 slight angle in the middle . 



b. Head moderate, less than half as 

 wide as the base of the thorax. 



H. PALLENS, Fowler. 



H. coNFiNis, Steph. 



H. MUCRONATUS, Steph. 



