1873.] t±0 [Horn. 



R. oregonensis, n. sp. 



Sub-cylindrical, piceous black, feebly shining. Rostrum slightly 

 longer than the head, moderately convex, coarsely punctured with short 

 median smooth space. Eyes moderately prominent. Funicle of antennae 

 stout, joints short transverse, second joint shorter than the third. Thorax 

 slightly longer than wide, slightly narrower in front, apex feebly con- 

 stricted, sides feebly arcuate, base slightly narrower and sub-truncate, 

 disc moderately convex, coarsely and evenly but not very closely punc- 

 tured. Elytra scarcely wider than the thorax, sides parallel, apex ob- 

 tusely rounded, surface convex, deeply striate, 7 and 8 confluent behind 

 the humerus, striae coarsely and serrately punctured, intervals narrow 

 moderately convex, at summit slightly crenulate. Body beneath coarsely 

 and moderately densely punctured, first ventral segment at middle 

 densely and moderately finely punctured. Anterior coxae approximated. 

 Legs rufous. Length .12 inch ; 3 mm. 



Oceurs in Oregon. The second joint of the funicle is so short and diffi- 

 cult to see that I was at first inclined to place the species in Hexarthrum. 



There are some specimens in the cabinet of Mr. Ulke, collected in 

 North Carolina and District of Columbia, differing in having a slight 

 transverse impression of the rostrum and an obsolete fovea between the 

 eyes. They do not appear to differ otherwise, and I cannot feel war- 

 ranted in assigning them specific rank. 



R. brunneus Mann. Bull., Mosc, 1843, II., p. 295 ; Schonh., Gen. 

 Cure. VIIL, 2, p. 280. 



Sub-cylindrical, piceous or black, feebly shining. Rostrum, slightly 

 narrower than the head and scarcely longer, moderately densely punc- 

 tured, at middle slightly canaliculate and near the tip a feeble triangular 

 impression. Eyes feebly prominent. Second joint of funicle as long as 

 the third. Thorax longer than wide, slightly narrower in front, with a 

 very feeble constrictiou, sides moderately arcuate, base slightly narrower 

 and sub-truncate, disc moderately convex, coarsely and deeply but not 

 densely punctured. Elytra slightly wider than the thorax, moderately 

 convex, parallel, apex gradually narrowed, surface striate, lateral striaj 

 feebler, 7-8 confluent, striae coarsely but not serrately punctured, inter- 

 vals slightly transversely wrinkled, finely and distantly uni-seriately 

 punctulate. Body beneath coarsely punctured, first ventral segment at 

 middle very densely. Legs rufo-piceous. Length 4 14 inch ; 3.5 mm. 



I have before me typical specimens from Mannerheim. A Vancouver 

 specimen differs from the above description in having the thorax densely 

 punctured and the sulcus of the rostrum reduced to a slight fovea near 

 the tip. 



Occurs at Sitka, Vancouver, Canada, Vermont. 



R. dorsalis Lee. Proc. Acad., 1858, p. 81. 



Piceous, shining, sub-cylindrical. Rostrum scarcely narrower than 

 the head and not longer, surface moderately convex, not densely puuc- 



