264 ACADEMY OF NATURAL SCIENCES 



elytra, and by having two thoracic strae, though one of them is 

 much abbreviated. It may be useful to state in this place, that 

 Paykull has represented his americanus as having the sutural 

 striae widely interrupted at base from the basal termination of the 

 fifth stria; in this character [37] he is, perhaps, correct, as 

 respects a few specimens, but in most individuals the connection 

 can be traced, with the exception of a very short interval of ob- 

 solete interruption. 



7. H. OBLIQUUS. — Elytra with an oblique rufous spot at tip ; 

 lateral thoracic stria interrupted from the anterior one. 



Body black : head with the transverse line angulated in the 

 middle: antennae rufous : thorax, an orbicular indentation at the 

 angle formed by the anterior and lateral striae, which do not 

 join : elytra with a large oblique spot on the exterior tip, extend- 

 ing from the sutural angle to the humerus, where it is obsolete ; 

 four dorsal stria, entire ; fifth somewhat abbreviated, being ob- 

 viously shorter than the others ; sutural stria extending to the 

 middle : feet with a large, prominent, slightly emarginate tooth 

 at tip, and three smaller ones. 



Length more than three-twentieths of an inch. 



This is so much like the himaculatus Linn., of Europe, that I 

 have long hesitated to describe it, being inclined to consider it a 

 mere variety of that species. Paykull represents the frontal 

 stria of the bimantladis of the usual form, excepting that it is 

 more obtuse than others, whereas that of our insect is precisely 

 similar to the same part of the senegah-nsis Payk., this character, 

 for which I rely on the accuracy of Paykull, combined with 

 those of the interrupted thoracic stria;, and the somewhat abbre- 

 viated fifth dorsal stria, justify the separation of this insect as an 

 independent species. [ 38] 



[Does not differ from the European species mentioned. — Lec] 



Family 2. — Frontal stria obsolete or none ; lateral thoracic 

 stria none; elytra with entire striae; anterior tibia entire. 



8. H. NIGRELLUS. — StrisB of the elytra equidistant, equal, 

 rectilinear; front convex. 



IT. jiavicornis Melsh. Catal. 



Body oval, black : front convex, more prominent in the middle, 

 a slight angle over the insertion of the antennae : antennae piceous, 



[Vol. Y. 



