166 H. C. FALL. 



4. O. obtustis Lee. — Elongate, usually red-brown, but sometimes darker, 

 pubescence recumbent. Head and prothorax more thickly granulate than in 

 sericans, thoracic disk moderately gibbous. Elytral strife, regular or very nearly 

 so. Front only about one-third wider than the vertical diameter of the eye in 

 the female. Ninth joint of antennas equal to the five preceding in the female, 

 nearly as long as all preceding in the male. Length 4.8-7.2 mm. 



The following localities are represented in the material at hand 

 or are reported on good authority : Eastern Massachusetts, Ver- 

 mont (type), New York (Staten Island, Long Island, Albany, Buf- 

 falo); Pennsylvania (Manayunk) ; New Jersey ; District of Colum- 

 bia ; Canada (Toronto); Mich. (Grand Ledge); Ohio (Cincinnati). 



This appears to be the species most often taken by collectors. It 

 resembles considerably the larger specimens of the more common 

 Hadrobrer/mus carmatus, but is rather stouter with larger thorax, 

 and may of course be distinguished at once by the approximate 

 front coxae. 



5. O. brevipilis n. sp. — Dark brown, upper surface with very short erect 

 hairs which are numerous on the head and thorax, sparser on the elytra, and 

 only distinctly visible when viewed in profile. Antennae 9-jointed, joints 2- 

 6 decreasing in length, the second scarcely half as long as the first; the sixth 

 very small, narrower than the fifth and evidently transverse; seventh joint ( £>) 

 not quite as long as the five preceding, scarcely more than twice as long as wide, 

 its inner margin rather strongly arcuate. Front rather more than twice as wide 

 as the vertical diameter of the eye. Otherwise nearly as in obtusus and alternuns. 

 Length 5-6.75 mm. 



Anglesea, New Jersey; Washington, D. C. ; Ft. Pendleton, AVest 

 Virginia; Michigan. 



Single examples from each of the above localities are before me. 

 Unfortunately all are females, but I have no hesitation in separating 

 it from alternans to which it is most closely related, because of the 

 erect hairs of the upper surface, the smaller eyes and wider front, 

 and the shorter and wider seventh antennal joint when compared 

 with the same sex of alternans. 



6. O. all emails Lee. — Blackish brown, occasionally paler, upper surface 

 without erect hairs, alternate elytral intervals in typical examples more convex, 

 hut this character is evanescent and totally fails in some examples which are not 

 otherwise separable. Disk of prothorax a little more strongly elevated and more 

 compressed than in our other species. Eyes of female larger than in brevipilis. 

 the front less than twice as wide as the vertical diameter of the eye; eyes still 

 larger in the male. Sixth joint of antennae not obviously narrower than the 

 fifth ; ninth joint ( £ ) nearly three times as long as wide, as long as the five pre- 

 ceding, the inner margin straighter than in brevipilis. Otherwise nearly as in 

 brevipilis. Lenth 4.4-6 mm. 



