1896.] ENTOMOLOGICAL NEWS. '61 



distinct; postscutellum rugose, not carinate; squamae more flaring, points 

 not so strongly incurved; spine tapering very gradually to tip. Abdomen 

 more closely and coarsely punctured. 



Fort Collins, August. This species, in color and form, is 

 almost the exact counterpart of striahis. But with the material 

 at hand it is impossible to unite them. 



Oxybelus 4-nofaius Say. — I have a large series of this variable 

 species from Michigan and Colorado. It is common at Fort 

 Collins in August, on Solidago. The variety montanus Rob. 

 occurs with the typical form. 



Oxybelus subulahis Rob. — Specimens collected in Michigan 

 (Agric. College, 6-29-88, on flowers of Spircea sorbifolia) do not 

 differ from the common Colorado form (Fort Collins, August, 

 on Solidago). I have one female resembling the variety from 

 Colorado described by Mr. Robertson. This specimen has, 

 however, all of the abdominal bands interrupted, and two yellow- 

 spots on the scutellum. 



Oxybelus acntas n. sp. $.— Head and thorax densely coarsely punc- 

 tured. Prothora34 indistinctly carinate, punctured, rounded at the sides. 

 Mesonotum in front, scutellum and postscutellum carinate ; squamae 

 nearly joining behind, points short not strongly curved; spine very short, 

 but little exceeding the tips of the squamae, base broad, rapidly narrow- 

 ing to an acute tip. Metanotum above with polygonal reticulations; me- 

 dian area subtriangular, sides rounded, partly closed above, rugose within, 

 passing below into a short carina; lateral faces coarsely rugoso-punctate. 

 Abdomen ovate, coarsely punctate, strongly constricted between the seg- 

 ments, last segment triangular, very coarsely punctured. Color black; 

 pubescence silvery, except on last two abdominal segments; flagellum 

 deep chocolate. Tubercles, tegulae, squamae, two oval spots on segment 

 I, two transverse spots on segment 2, and narrow continuous bands on 

 segments 3-5, yellowish white; hind margins of abdominal segments 2-5 

 silvery. Legs black; anterior tibiae rufous, middle and posterior piceous, 

 all tibiae with whitish stripes outwardly; tarsi rufous towards tips. Wings 

 hyaline, slightly smoky on distal margins, nervures rufous. Length 6.5 mm. 



Foot-hills west of Fort Collins, 6-30-95. This species is 

 nearest subulatus. It differs from all known North American 

 species in the extraordinary form of the spine. It may also be 

 separated from subulahis by other characters as above described. 



Oxybelus COCkerellii n. sp. cf- — Vertex and thorax coarsely, rather 

 closely punctured. Face finely and more sparsely punctured. Occiput 

 transversely striato-punctate, but not strongly so. Vertex with a median 

 tubercle. Prothorax carinate, rather sharp angled at the sides. Meso- 

 notum in front, scutellum and postscutellum, strongly carinate; squamae 



