B94 G. R. CROTCH, M. A. 



H. lineolatus, Lee. 1. c. n. 33. 



Finely pubescent, thorax finely margined, small (08), elytra regu- 

 larly vittate. 



b. — Black beneath, thorax very finely margined, equally punctate. 

 H. fort is, Lee. Ann. Lye. v., p. 207. 



Distinct by its large size (/26) convex form, silky lustre and acicu- 

 late femora. 

 H. axillaris, Lee. Mels. Cat., p. 32; humeralis, || Lee. Ann. Lye. v., 207. 

 Smaller than the above and with the shoulders conspicuously pale. 



H. snl>|>ul>escens, Ac. 1. e. p. 208; hirtellus, Lee. 1. c. 

 These three California, species must be collected in numbers before 

 they can be properly characterized. 



H. modest us. Aube*, Spec, vi., p. 576. 



Extremely finely punctulate and densely pubescent; even the male 

 is scarcely visibly punctulate. 



H. dichrous, Mels. Pr. Acad, ii., 28. 



Recognizable by its broad form, pointed behind, head and thorax 

 often rufous, punctuation very fine. 



H. amerieanus, Aube, Spec, vi., p. 575. 



More elongate, sub parallel and distinctly punctulate, also less 

 densely pubescent. 



H. signatus, Mann. Bull. Mosc., 1853, iii. p. 161. 



Specimens from Canada, Illinois, etc., seem to belong to this species, 

 which is closely allied to H. dichrous, but is smaller ("15), more ovate 

 and with the humeral angles pale. 



II. humeralis, Aube, Spec, vi., p. 578. 



I have only seen two specimens from Sitkha, both opaque females ; 

 the dorsal yellow mark is well defined and recalls H. palustris of 

 Europe. 



H. puberulus, || Mann. Bull. Mosc., 1853. 



Identified by Schaum with a common European species. It is the 

 smallest American species with the disc of the thorax punctate. 



c. — Thorax with the disc generally impunciate, sides finely margined, size small. 

 II. tenebrosus, Lee. Lake Sup., p. 214; lutulentus, Lee. Pr. Acad., 1855> 

 p. 292, 50. 



Resembles 77. arneriatnus and dichrous, but the thorax is smooth in 

 the middle, and is also more strongly margined. 



