86 GEO. H. HORN, M. D. 



having the elytral punctuation coarse over the entire surface, although a little 

 finer toward the sides and apex. Length a little smaller on the average than 

 the preceding species. 



Male. — Claws bifid at apex, the inner portion a little shorter; last ventral seg- 

 ment vaguely emargiuate from side to side with a slight median depression; 

 pygidium slightly inflexed at apex. 



Female. — Claws simple ; last ventral less emarginate, with a slight notch at the 

 middle of the edge, in front of which is a slight triangular depression. 



Forms occur in this species as pale as any of those of coiisputa, 

 but as a rule the color is darker and the black spots more numerous, 

 forming three fairly marked lines with intermediate smaller spots 

 irregularly placed. In the more decidedly maculate specimens the 

 thorax often has a median dark stripe and a spot each side. 



Occurs in Wyoming, Dakota, Utah, Oregon, California, Nevada, 

 Arizona. In his description of obtvsa LeConte gives Andover, Mass., 

 as one of the localities. This is much more than doubtful. 



Iff. !4orfIida Lee, Proc. Acad. 1858, p. 88; loc. cit. 1865, p. 222.— Form ob- 

 long, similar to the preceding species, but a little more slender ; color yellowish 

 testaceous, the elytra with black spots of irregular size with a tendency to coa- 

 lesce along the suture, rarely specimens occur with the surface entirely testace- 

 ous. Antennfe more or less brown. Head closely punctate, a finely impressed 

 median line, surface finely pubescent. Thorax nearly twice as wide as long, not 

 wider at base than apex, widest at middle, sides moderately arcuate, base truncate 

 at middle, oblique each side, angles not prominent, disc irregular, a well-marked 

 median sulcus, on each side two depressions, one near each angle ; surface closely 

 punctate, finely pubescent : elytra closely and rather coarsely punctate, finely 

 pubescent, rarely entirely testaceous, usually with numerous black spots of ir- 

 regular size. Body beneath brown or piceous, sparsely punctate or pubescent. 

 Legs pale, sometimes the tibiae and femora are banded at middle. Length .12 — 

 .14 inch. : 3 — 3.5 mm. 



Male. — Claws finely bifid at tip. Last ventral truncate and broadly emargin- 

 ate, with a slight depression near the margin. 



Female. — Claws simple. Last ventral as truncate, with a slight emargination 

 at the middle of the edge, from which proceeds a groove extending about one- 

 third the length of the segment. 



This species may be either entirely pale, or with spots which do 

 not show the same tendency to form series. When the black spots 

 are numerous they sometimes coalesce, forming larger spots placed 

 at the umbone, each side of scutellum ; an interrupted band in front 

 of middle, oblique each side, another transverse, arcuate band one- 

 third from the apex ; often the entire suture is narrowly bordered 

 with black. 



