266 GEO. H. HORN. 



Claws slender, feebly curved aud simple. The sculpture of the 

 elytra is remarkable in being finely granulate and scabrous. The 

 sutural stria is exactly parallel with the suture to base, so that there 

 is no trace of scutellar stria. The usual coarse punctures of the 

 alternate intervals are not present and are not merely concealed by 

 the other sculpture. 



The thoracic depressions near the base, faint as they are, indicate 

 the last vestige of the sculpture usual in Helophorus, and the coarse 

 puncture seen on each side of the base of the thorax in so many 

 species is merely the remnant of the sinuous line each side of the 

 median line in Helophorus. 



Specimens are occasionally seen that are quite black and feebly 

 shining. 



Occurs in Vancouver, Oregon and California as far south as San 

 Francisco. A specimen in my cabinet from Arizona is probably 

 from the more northern and mountainous regions of that territory. 



H. tesselatus Ziegler. — Broadly oval and very convex, pale castaneous, 

 sliiniug, elytra indistinctly marked with slightly darker, small spaces without 

 definite pattern. Head coarsely, deeply, not closely punctate, clypeus much 

 smoother and moderately deeply emarginate. Thorax coarsely, not closely, but 

 somewhat irregularly punctate, a vague depression opposite the middle of each 

 elytron, hind angles rounded, basal marginal line extremely fine and indistinct. 

 Elytra oval, very nearly as broad as long, very convex, more elevated posterior 

 to base, ten entire strife moderately deeply impressed, scutellar stria well marked 

 and impressed, stride wath coarse moderately close, but not crenate punctures, 

 the intervals convex, smooth, the 3-5-7-9 slightly more so than the others, but 

 without trace of the coarse series of punctures. Body beneath brownish, opaque. 

 Lcs brown, the basal half of all the femora opaque, punctulate and pubescent. 

 Length .28— .30 inch. ; 7—7.5 mm. PI. iv, fig. 3. 



The |)rosternum has merely a slight elevation in front, mesosternum 

 slightly convex, but without pubescence. 



Claws slender and simple in both sexes. The indefinite spots of 

 color are principally at the sides and apex, a large triangular scu- 

 tellar space being without them. 



The curious aspect of this species as compared with the others 

 would suggest the probability of its belonging to u genus or division 

 apart from them, but as I have before remarked there is absolutely 

 nothing which can be used for separation. It is but little more con- 

 vex than globosHS, but the anterior portion of the body being more 

 deflexed causes it to appear more so, and while the point of greatest 

 convexity is nearly the same in globosus and tesselatus, the curve of 

 the elvtra when viewed from flie side is much more convex here. 



