264 GEO. H. HORN. 



sculpture variation is that usually observed in punctato-striate species, 

 and is never very great. 



Occurs over the greater part of the northern regions of the con- 

 tinent and in California, extending southward to the Colorado Kiver. 

 It is a common European species, more abundant in the northern 

 regions. 



H. globosiis Say.— Sliglitly obloug, hemispherical, piceous blaclc. siiining, 

 surface faiutly teneous. Head closely punctate, with the usual series of coarser 

 punctures. Thorax closely punctate, nearly equally over the entire surface, the 

 coarser punctures of the anterior and posterior series united in a curve near the 

 lateral margin, basal marginal line entirely wanting. Elytra with ten entire 

 striae of moderate punctures, closely placed near the base, more distant toward 

 apex, scutellar stria distinct, strife not impressed, intervals flat, sparsely, finely 

 punctnlate, the usual series of coarser punctures on intervals 3-5-7-9, also be- 

 tween the tenth stria and the margin. Body beneath opaque black. Legs pi- 

 ceous, tarsi rufescent; posterior femora densely punctured and slightly pubes- 

 cent near the base only, exteriorly coarsely sparsely punctured and shining. 

 Anterior and middle femora densely punctured and pubescent, except near the 

 apex. Length .30 inch.; 7.5 mm. PI. iv, fig. 4. 



Prosternum simple, mesosternum with a prominent triangular 

 lamina, the postero- inferior edge thick. 



Tarsal claws simple, similar in the sexes. 



This insect appears to have been almost sinuiltaneously described 

 by Say and Germar, and it might be a very difficult question to 

 decide which name has the priority, and no profit would come of the 

 investigation. The name given by Say is now well known, and has 

 been the recognized name for three-fourths of a century. It is rather 

 remarkable that Germar's name, SphcericUvm melrf.num, should have 

 been completely lost to sight in our literature. 



Occurs in the New England and Middle States. 



H. tunii<Iiis Lee. — Oval, very little longer than wide, very convex, piceous 

 black, shining, surface with slight teneons lustre. Head moderately closely 

 punctate, with coarse punctures as in glohosus. Thorax moderately, closely, and 

 equally punctate, coarser punctures as in glohosus. Elytra striato-punctate, strije 

 not impressed, punctures not coarse, closely placed near base, sparser and finer 

 near apex, strise entire, except the sutural and second, scutellar stria not evident, 

 intervals flat, punctate more coarsely than in globosus, and with large punctures 

 arranged as in that species. Body beneath opaque black. Legs piceous. tarsi 

 rufescent; posterior femora entirely glabrous, coarsely sparsely punctured, mid- 

 dle femora densely punctured and pubescent near the base only, anterior femora 

 opaque, except near the tip. Length .34 inch. ; 8.5 mm. PI. iv, fig. 7. 



Prosternum either with a very small, acute, tubercle at apex, or 

 simple ; mesosternum with a lamina as in globosus, nearly vertical 

 in front. 



