G. C. DAVIS. 259 



yellow : in addition to this the 9 has the lower half of cheeks, pectus, sternnm, 

 lower margin of pleurse, four anterior coxse and apical margin of last two or 

 three abdominal segments, yellow ; the %, has more or less of a vertical line on 

 the face and in clypeal suture; antennse reddish brown, more yellow in 9 : wings 

 subhyaline, nervures and stigma brown, yellow at base ; areolet usually present, 

 sometimes wanting; third discoidal cell short, broad at base. 



Four specimens from Illinois, Pennsylvania and New Hampshire 

 (type, coll. Amer. Ent. Soc). 



ScopioriiS siibcrassus Cress. {Tryphon), Trans. Amer. Ent. Soc. ii, 109. 

 Pohjblastus (Hiatus Prov., Faune Ent. Can. ii, 419. 



'^ 9 . — 5-7 mm. Black, with clypeus, mandibles, palpi, tegulse and scape be- 

 neath, yellowish white; abdomen varies from rufous with two apical segments 

 black, to black with second segment rufous, and in one specimen this segment is 

 piceous; legs rufous, often with apex of femora and tibiae and the tar.'^i of hind 

 legs, dusky : antennse vary from pale reddish brown to nearly black ; wings hya- 

 line, nervures and stigma brown, yellow at base; areolet usually present, often 

 incomplete ; third discoidal cell broad and short. 



Thirteen specimens from Massachu.setts, New Hampshire, Maine, 

 Canada, Connecticut, Pennsylvania, Michigan and Montana (type, 

 coll. Amer. Ent. Soc). 



SScopiorus e.iLtrifatU!>» n. sp. 



9 . — 7 mm. Black, with legs and abdomen entirely rufous ; base of mandibles 

 and tegulse white; clypeus yellow, black at base; palpi dusky yellow; antennae 

 reddish brown, scape black; wings hyaline, nervures and stigma biown: areolet 

 wanting ; most of head, dorsum of meso- and metathorax, scutellum, upper pleurae 

 and apical portion of abdomen polished, sparsely punctured. 



One specimen from Colorado (type, coll. Amer. Ent. Soc). 



ERROMEXUS Holmgren. 

 (Monographia Tryphoniduni Sueciae, p. 221, 1856.) 



Head broad, disc-shaped, slightly inflated behind eyes ; eyes 

 small and set well into the head ; face broad, pilose, punctured, 

 somewhat tuberculate beneath antenniTe; clypeus punctured, narrow, 

 elliptical, with transverse ridge near base ; antennte short, more or 

 less thickened in the middle. Thorax broad, oval, coarsely punc- 

 tured and pilose; parapsidal grooves wanting; scutellum broad, 

 subtriangular, carinate laterally; metathorax completely areolated, 

 or with the ba.sal transverse carina incomplete. Abdomen strong, 

 segments broad ; oblique grooves at base of segment 2 ; petiole very 

 broad, gradually narrowed to base, dorsal carin?e distinct; ovipositor 

 short, acuminate, incrassate, curved at base. Legs short, strong ; 

 posterior femora incrassate, short ; claws pectinate. Wings with heavy 

 nervures, areolet small, petiolate; humeral cross nervure of hind 

 wing broken far below the middle. 



TRANS. AM. ENT. SOC. JiXIV. SEPTEMBER, 1897. 



