204 . AMERICAN HYMENOPTERA. 



and stigma black; areolet large, petiolate, third discoidal cell rectangular, not 

 narrowed at base. Abdomen with the last two segments retracted ; first two seg- 

 ments with two parallel, longitudinal carinse ; ovipositor not exserted. 



Nine .specimens from Nevada and Washington (types, coll. Am- 

 Ent. Soc. and G. C. D.j. 



Tylecoiiiuiis iiidigus n. sp. 



1) 9- — 13 mm. Black, pilose ; four anterior legs rufous, posterior pair rufous, 

 except apex of femora, base and apex of tibise and their tarsi, which are piceous; 

 palpi dusky rufous; antennse long, piceous; wings dusky hyaline, nervures and 

 stigma brown, areolet large, subpetiolate. third discoidal cell not narrowed at 

 base: nietauotum mucronate, median area elongate, much narrowed toward apex, 

 Abdoraeu with the last two segments retracted ; first two segments with parallel, 

 longitudinal carinse ; ovipositor not exserted. 



One female and one male from Colorado and Franconia, N. H. 

 (Mrs. Slosson). Types, coll. G. C. D. and Am. Ent. Soc. 



Tylecomiiiis niinoris n. sp. 



9. — 6 mm. Black, with ferruginous legs; hind tibise and tarsi brownish red, 

 the former with a white annuliis near the base; tegulaj and line beneath yellow. 

 Wings hyaline, nervures and stigma brown ; areolet wanting, third discoidal cell 

 not narrowed at base, rectangular. Head and thorax as in the preceding species, 

 anteunse slightly shorter. Abdomen not as deeply punctured as in the two pre- 

 ceding species, and without the parallel carinse beyond the fir-st segment, neither 

 are the segments biemarginate at apex ; the ovipositor is also exserted 1 mm. and 

 with vertical guides, but otherwise the same. 



One specimen from New Hampshire (type, coll. Am. Ent. Soc). 

 This species may form the type for a new genus. 



LETHADES n. g. 



Rather coarsely and closely punctured. Head large, transver.'=^e, 

 excavated behind ; face with a sharp tubercle beneath antennae ; 

 clypeus separated by a subobsolete depression. Thorax robust, sub- 

 depressed above ; mesopleurse strongly inflated ; scutellum elevated, 

 oval, margined at base ; metathorax areolated, obsoletely so at base. 

 Abdomen depressed, broadly oval above, subcompressed at apex ; 

 disc of basal segment inflated and with carinse ; ovipositor exserted, 

 curved upward. Wings with an areolet. Legs moderately robust. 

 Liethades texaiius Ashm.. Proc. U. S. Nat. Mus., xii. 442. 



o . — S mm. Black, with the mandibles, scape beneath at apex, triangular spot 

 on lateral anterior angles of mesonotum, tegulse, line beneath, apex of scutellum, 

 postscutellum, broad apical margins of all abdominal segments, anterior coxae, 

 base of tibise and knees of all legs yellow; rest of legs dusky red tinged with 

 yellowish : hind coxfe and femora black. Wings subhyaline, nervures and stigma 

 reddish brown : areolet sessile, obliquely subrhomboidal : cubito-discoidal nervnre 

 strongly arched and broken near base; transverse median nervure unites much 

 back of basal. 



Two specimens from Texas (type, coll. U. S. Nat. Mus.). 



