G. C. DAVIS. 303 



metathorax oval, small, completely and distinctly areolated though 

 the carinie are small. Abdomen long, subclavate, subcom pressed at 

 tip in 9 I petiole gradually broadened toward apex. Wings ample, 

 with rather large petiolate areolet, and humeral cross-nervure of 

 hind wing broken above the middle. 



The only apparent difference between this genus and Perilissus 

 Foerst. is in the length of the hind tibial spurs, which in our repre- 

 sentatives are all short and strong. This genus might easily be 

 divided into two distinct and natural subdivisions, as may be seen by 

 the following genei'al subdivision in the synopsis : 



Head, tliorax aud abduiueu strongly sliagreeued ; head smaller aud not as oval 

 iu front. 

 Body piceous to black, abdomeu in part rufous: head black. 



coloratleiiNis Ashm- 



Body mostly rufous; head pale iludiis n. sp 



Body uniform whitish yellow, or with dusky patches diiiicolur Cress 



Head and thorax and usually base of abdomeu coarsely punctured ; head strongly 

 buccate, oval in front. 



Thorax black, abdomen rufous (lecoloratus Cress. 



Thorax aud body dusky ; scutellum aud most of face yellow. 



obsciirellus n. sp. 

 Thorax aud entire body uniform reddish brown coiicolor Cress. 



Spauoteciitis COloradensis Ashm., Trans. Am. Ent. Soc. xxiii, 198. 



'J) 9 • — 5 mm. Piceous, with legs, face, mouth-parts, cheeks beneath, tegulse, 

 border around it, pectus and more or less of median abdominal segments, rufous: 

 posterior coxse sometimes piceous ; antennae reddish brown; wings hyaline, uer- 

 vures aud stigma brown, pale at base; first recurrent nervure obliquely trans- 

 verse; transverse median nervure unites before or with the basal; entire body 

 coarsely shagreened, but uot distinctly punctured. 



Ten specimens from ^Montana and Mt. Hood, Oregon (type, from 

 Colorado, coll. Ash mead J. 



Spaiioteciiiis iladus n. .sp. 



% . — 7 mm. Ferruginous, with spot enclosing ocelli, broad margius of meso- 

 uotum, base aud apex of metathorax, upper mesopleura and basal half of petiole 

 dark piceous; orbits, face, cheeks beneath, mouth-parts, prothorax. lower pleurae, 

 part of sternum, tegulse and most of trochanters aud four anterior coxse yellow . 

 anteunse dusky above ; wings subhyaline, nervures and stigma brown ; humeral 

 cross-nervure of hind wing broken slightly below the middle; body strongly 

 shagreened. 



One specimen from New York (coll. Davis). 



Spauotecuiis diitculor Cress. {Mesoleptus), Proc. Ent. Soc. Phil, iii, 271. 



% 9 ■ — 5 mm. Uniform pale brownish yellow with spot enclosing ocelli, black, 

 and in % the meso- and raetanotum and base and apex of abdomen are more or 

 less tinged with dusky patches; head subbuccate and not strongly oval iu front; 

 the til>ial si)urs are also somewuat longer than iu the other species ; entire body 



TRANS. AM. KNT. SOC. XXIV. OCTOBER. 1897. 



