Othniidae 



211 



whitish hairs, present the above (siehe Familienbeschreibung!) 

 assemblage of . characters. — - — The species from which the 

 description of the family is taken is found in Nebraska, near the 

 Rocky Mountains. 



0. lugubris G. Horn, Trans. Ent. Soc. 1868, p. 132. - Dark 

 black bronze, uniform in color, head very coarsely and densely 

 punctured. Thorax densely and coarsely punctured, sub quadrate, 

 slightly narrowed behind and with two indistinct teeth. Elytra 

 elongate, twice as long as wide, sides subparallel, coarsely and 

 densely punctured and sparsely clothed with whitish hairs. Be- 

 neath black, shining, thorax and pectus coarsely but not densely 

 punctured ; abdomen f inely and not densely punctured and sparsely 

 clothed with whitish hairs. Legs black, knees and tarsi paler. 

 Length. . 20 inch.. 



Distinct from umbrosus by its less elongate form and the 

 uniform color of elytra. The obtuse teeth of the margin are more 

 distinct and the punctures of the surface of the thorax are less 

 dense and never confluent. 



This species was collect ed by Mr. Wm. W. Gabb in South- 

 western Oregon. 



0. senecionis Champ. Biol. Centr.-Am. Col. IV, 1, 1888, 

 p. 467 (t. XXI, f. 14.) — Blackish-brown, opaque, the elytra 

 slightly shining, the head and prothoräx densely clothed with 

 short appressed hairs, the elytra with longer and more scattered 

 decumbent ashy hairs. Head very densely and rugosely punctured, 

 the intraocular space convexly raised in the middle, the eyes 

 moderately large; antennae very short, not reaching the base of 

 the prothoräx, joints 9 and 10 strongly transverse, ferruginous, 

 the last three joints a little darker; prothoräx very convex, the 

 sides much rounded, about equally narrowing before and behind 

 and shallowly emarginate behind the middle, the emargination 

 preceded and followed by a short tooth, the hind angles rather 

 acute, the surface very densely and rugosely punctured throughout, 

 velvety-blackishbrown, with a longitudinal stripe on the middle 

 of the disc white; elytra long and convex, subparallel, dark 

 bronze with an irregulär network of testaceous markings, densely 

 and not very finely punctured, the punctures coarser towards 

 the base; legs ferruginous. Length dVs 2 ^t^- (ö9)- Hab. 

 Mexico. 



0, antennalis Champ. — 1. c. t. 21, f. 15, 15 a. — Dark bronze, 

 shinning, sparsely clothed with short ashy, decumbent hairs. Head 

 closely and coarsely punctured; antennae testaceous, short, about 

 reaching to the base of the prothoräx, joints 9 and 10 very strongly 

 transverse, 9 obliquely produced on its inner side; prothoräx mo- 

 derately transversely, coarsely and closely punctured, the punc- 

 tures more scattered on the anterior half of the disc with a narrow 

 ill-defined longitudinal Space in the middle impunctate, the sides 

 feebly emarginate before and behind the middle, and with a short 



14* 1. Heft 



