206 WILLIAM J. FOX. 



98. Crabro uuicus Patt. 



Blepharipus unicus Patton. Can. Eiitom. xi, p. 214, 9 ■ 



" 9 • Length 5 mm. Black, tips of tlie mandibles, tegulte, spurs of posterior 

 tibiae and extreme base of the first joint of posterior tarsi, the last joint of poste- 

 rior tarsi, the tips of all the coxte and trochanters and the tips of the posterior 

 femora and tibiae, fuscous. Scape beneath, dot on first joint of flagellura, the 

 tubercles, the four anterior tibisp. excepting a black spot beneath, and the tips of 

 the four anterior femora, yellow. The four anterior tarsi, excepting the fulvous 

 apical joint, and the base of the posterior tilnae. whitish. Clypeus black, covered 

 with a silvery pile ; flagellum fulvous beneath. Thorax beneath and the abdomen 

 with sliort scattered pubescence. The abdomen excepting the rufo-piceous en- 

 cloaui-e on the sixth segment entirely black. Wings hyaline, beautifully irides- 

 cent, the nei-vures and stigma black. Head, thorax and abdomen smooth. The 

 head as wide as the thorax, and the vertex longer than wide, the front narrow. 

 The ocelli arranged in an equilatei-al triangle, each in a .separate depression ; from 

 the anterior occlhis an impressed line extends downwards upon the face and 

 another extends backwards on the vertex ; on the inner orbit on the vertex is a 

 slight groove curving at the end to come in a line witli a short oblique groove 

 behind each posterior ocellus. Prothorax sharply angulated beneath, mesopleune 

 sharply angulated beneath near the coxse. Anterior portion of the mesonotum 

 with four short lines which extend upon the collar as slight notches; mesonotum 

 with a slight groove on each side of the disk and with a marginal row of reticula- 

 tions over the tegulse. Scutellum quadrate, connected with the mesonotum by 

 the broad lateral angles between which it is separated by a basal row of large 

 reticulations. The semi-circular area on base of metathorax is encircled by a row 

 of similar reticulations and divided by a deep median groove. Similar rows of 

 reticulations extend in a slightly curved line down upon the mesopleura from the 

 anterior wings and others mark the lateral sutures of the metathorax. The sides 

 of the mesothorax beneath and the sides and posterior face of the metathorax 

 are finely striate ; these strige curve upon the metathorax above, and are repre- 

 sented within the enclosure by strife of microscopic fineness. The posterior face 

 of the metathorax has a deep triangular median depression above, and is more 

 coarsely rugose beneath. Area on the sixth segment of abdomen not punctured, 

 depressed medially, the sides much thickened and raised. Abdtmien shorter than 

 the rest of the body, narrow at base, broad near the tip. The posterior tibite 

 much thickened. 



" New Haven, Conn., Juh' 15th. 



" The elongate head and elavate abdomen give this species a very 

 peculiar appearance." 



Belongs evidently to either group ater or iiisolenn, or near by. 



99. Crabro iiiger Prov. 



Crabro iiUjcr Provancher. Add. Hym. Quebec, p. 419, 9- 

 " 9 • Length .26 inch. Black in all its parts, without a spot, polished, shining. 

 Head transverse, not narrowed behind the eyes. Thorax finely punctured, the 

 metathorax strongly rugose, with irregular strise basally. Wings hyaline, ner- 

 vures brown, stigma black. Tegulse pitchy-black. Legs not maculated. Abdo- 

 men subpedunculate, polished, shining, smooth, its apical projection [pygidium] 

 channeled. Ottawa (Guignard)." 



Belongs very likely to group ater. 



