28 G. C. DAVIS. 



l)ital lines, mouth, tegulie, spot iu front, line below, cuneifoiTQ band on margins 

 of mesonotum, tip of scutellum and band between mesor and metapleura\ yellow- 

 ish white. Legs ferruginous, coxse black and yellowish white ; posterior tarsi an 1 

 tills of tibiie fuscous. Abdominal segments 1, and 2 and 3 at base finely rugose ; 

 tips of segments oliscurely margined with red in some specimens. 



% . — Differs in having the face, scape beneath, presternum, stripe on front of 

 mesopleurae, four anterior coxse and trochanters, and two spots or a band at the 

 base of third abdominal segment, yellowish white. In a few sjiecimens this band 

 is alisent, wliile in others there is also a band at the base of the fourth segiiu'ut. 



Fourteen female and forty-six male specimens from S. California, 

 Nevada, Washington, Colorado, Montana and Canada. 



lIoiuot.ro|>ii!>i bicapillaris Walsh (Bassus), Tr. St. Louis Acad, iii, 8S, 9 • 



B(i>>sus belangeri Prov., Faune Ent. Can. ii, 430, 9 • 



Bassus pectoralis Prov., ibid. 431, % . 

 9 . — Length 6 mm. Black, mouth, tegulje, spot in front, line beneath, broad 

 line on margins of mesonotum, line between meso- and metapleurse and two capil- 

 lary lines extending from wing to wing, passing over the tijis of scutellum and 

 post-scutellum where they become somewhat broadened, yellowish white ; pleui-ae, 

 scutellum and clypeus have a tendency to be more or less rufous. Legs pale 

 rufous, with posterior tarsi and tips of tibise, black. Abdomen with first segment 

 scabrous and base of second coarsely aciculated, remainder of segments finely 

 punctured ; metathorax with long white pile. 



% . — Differs in having the face, scape beneath, band on anterior part of meso- 

 sternum, extending onto pleural, and four anterior coxa; and trochanters yellowish 

 white. 



Four female and one male specimens from Colorado, Illinois, New 

 Hampshire and Canada. 



Var. albopictiis difiers in the female having a large white spot on the front 

 and the sides of the scutellum yellowish white, and in the % having, besides the 

 markings on the sides of the scutellum, a yellowish white band at the base of the 

 tliird abdominal segment. The first abdominal segment varies from finely scab- 

 rous to coarsely aciculated. 



Described from six female and three male specimens from Colorado, 

 Washington, Canada and Michigan. 



This may be a separate species, but as the specimens are so variable 

 in the above markings, it seems best to only make them a variety of 

 hkapiUark. 



Hoiiiotropiis pallipennis Prov. (Bassus), Faune Ent. Can. ii, 431, 9- 



9 . — Length .5.5 mm. Black, with abdominal segments 2, and 3 and 4 at tip at 

 least, ferruginous ; moutli, small spot in front, costa;, tegulse, spot in front, line 

 beneath, cuneiform line on margins of mesonotum, scutellum, post-scutellum with 

 capillary line to wings, suture between meso- and metapleurse, trochanters and 

 four anterior coxee yellowish white : posterior coxte black, tipped with yellow ; 

 tips of posterior til)ife and their tarsi dusky ; remainder of legs honey-yellow. 

 Wings hyaline, stigma yellowish brown ; antennae brown. Abdomen closely and 

 finely punctured. 



