Williston.] *^'^^ [May 19, 



tubercnlate, and tibiaj in lower third strongly bent ; in female the femora 

 and tibi;i! not bent, the former swollen but the tubercles indistinct. Wings 

 Avith brown clouds along the vein and a verj^ dark spot near the tip of 

 auxiliarj', the inner portion of the cells hyaline. Long. corp. 15-10 mm. 

 Washington Territory. 



pp. — Face, not evenly concave, tuberculate ; hind femora slender. 



g. — Face produced downwards and forwards, proboscis long.; eyes of 



male well separated, abdomen uniformly black, short, broad 



Eurhinamallota Big. 

 Bui. Soc. Ent. Fr. Apr. 1882, No. 6, p. 78, Brachymyia AVilliston, Can. 

 Entomologist, Vol. xiv, p. 76, May, 1882. 



Eurhinamallota lxjpina, Wlstn., 1. c. California. 



Eurhinamallota nigripes Wlstn., 1. c. Northern and Southern Cali- 

 fornia. I know this species only in the female ; should the male's eyes 

 be found to be contiguous in front of the ocellar tubercle, I know of no 

 other character to separate it from Eriophora, Phillipi Ver. Zool. Bot. 

 Gesells. Wien., 15, 735, 1865, pi. 26, fig. 36. 



qq. — Face produced directly downward, more or less arched or tubercu- 

 late in the lower part. 

 r. — Eyes of male separated by the ocellar tubercle. Antennal promi- 

 nence very conical, abdomen with 3-4 pairs of large oval, oblique 



yellow side sjwts Somula decora. 



rr. — Eyes of male more or less contiguous in front of the ocelli ; anten- 

 nal prominence conical .' Criorrhina. 



Table of species. 



a. — Abdomen wholly black *armilnta. 



b. — Three basal segments and base of fourth black, remainder yellow. . . . 



analis. 



c. — Second segment with triangular lateral spots ; in female the anterior 



margins of third and fourth in the sides with yellow spots ; humeri 



yellow kumeralis, sp. nov. 



d. — Second segment with an interrupted cross-band, third and fourth with 

 entire cross-band, attenuated in the middle behind and on the sides. . 



scitvla, sp. nov. 



Criorrhina humeralis, sp. nov. 



(^ 9- — Face yellow, shining with a semi-translucency ; cheeks black ; 

 front in female on upper half, black ; whitish pollinose on the sides below 

 the vertex, frontal .triangle in male like the foce ; antennte yellow, some- 

 what infuscated on the first two joints and on upper part of third ; thorax 

 black, Avith short thin yellow pile ; scutellum black, the edge lateous ; 

 abdomen black, with recumbent, not abundant yellow pile ; second seg- 

 ment with triangular yellow spots, in the female the third and fourth, 

 with rectangular yellow spots on the anterior margins, fifth mostly yellow 

 except a narrow median line and the tip ; legs yellow, front and middle, 

 and a ring on distal part of posterior femora, posterior tibiB in middle, 



