1896.] ENTOMOLOGICAL NEWS. 157 



mandibles piceous for a short distance at middle. Antenna: black, shad- 

 ing into light chocolate towards tips; tegulae piceous; squama- at base 

 and spine at tip very pale yellowish; narrow apical margins of abdominal 

 segments 1-5 brilliant silvery, these bands narrowly margined inwardly 

 (basally) with bright fulvous; apical segment piceous. Legs black, ante- 

 rior tibiae at base and apex, and all tarsi piceous. Wings hyaline, nervures 

 brown. Length 4.75 mm. 



Foothills five miles west of Fort Collins, Colo., August 4th. 

 I dedicate this very distinct species to Mr. Charles Robertson, 

 the author of the " Synopsis of N. A. Oxybelus." 



Oxybelus varicoloratus n. sp. $ . Head finely closely punctured, occiput 

 somewhat transversely striato-punctate; hind ocelli tending towards the 

 position in cornutus. Pronotum with a transverse carina, not angled at 

 sides; mesonotum rather coarsely and closely punctured; mesopleurae 

 sparsely punctured; scutellum with a weak median carina; squamae long, 

 narrow, nearly joining behind, with a very strong short lateral tooth, which 

 is not curved and does not exceed the tips of the squamae; spine very 

 obtusely rounded at the tip, rather short, channeled above, sides nearly 

 parallel; metanotum above and lateral faces striato-punctate; pleurae 

 transversely striate; the ovate median area convex above within and punc- 

 tate, concave below and smooth, passing below into a rather long median 

 carina. Abdomen oval, closely, finely punctured, scarcely constricted 

 between the segments; apical segments very coarsely punctured, sides 

 curved and narrowed to a truncate point. Color black; pubescence silky, 

 fine and rather thick all over the body, more so on face and base of m eta- 

 thorax; mandibles piceous at middle; scape black, yellowish at tip be- 

 neath, fiagellum brown, lighter below; tegulae and postscutellum yellow; 

 rather broad apical margins of abdominal segments 1-4 silvery, these 

 bands narrowly margined inwardly with yellow, which is interrupted at 

 middle by a spot of rufous; on segments 3-4 the yellow band is very nar- 

 rowly margined inwardly with rufous; fifth and sixth segments entirely 

 rufous; ventral segments 2-3 with narrow yellow bands. Legs black, 

 fore tibiae and middle and hind tibiae at extreme base yellowish rufous; 

 fore tarsi yellow, middle and hind tarsi black at base to light brown at 

 tip. Wings hyaline, veins piceous. Length 6 mm. 



Fort Collins, Colo. , on flowers of Solidago canadensis in Aug. 



Oxybelus hirsutus n. sp. ? . Nearly related to varicoloratus. Differing 

 as follows: pubescence very unusually thick all over body, especially on 

 the head. Pronotum back of carina except spot at middle, tubercles, 

 and spot on either side of scutellum, yellow. The yellow on abdominal 

 segments 1-2, and on ventral segments 2-3, very broad. Abdomen long 

 oval, apical segment triangular, sides straight, tip slightly emarginate. 

 Legs black; middle trochanters beneath at tips and hind coxae beneath, 

 yellow; fore and hind femora beneath at tips, and middle femora broadly 



