116 U. S. NATIONAL MUSEUM BULLETIN 216 



Front wing 8.7 to 22 mm. long; temple not unusually swollen; propodeum of 

 moderate length, with moderately dense punctures; combination of color 

 characters not as above 17 



17. Last four segments of maxillary palpus medium brown; hind corner of pro- 



notum entirely black or its apex narrowly dusky ferruginous; median longi- 

 tudinal carinae of propodeum strongly divergent . 13. foxleei, new species 

 Last four segments of maxillary palpus white or whitish; hind corner of 

 pronotum white or pale fulvous; median longitudinal carinae of propodeum 

 moderately divergent 18 



18. Upper face of front and middle tibiae fulvous, the basal 0.15 ± whitish; temple 



moderately convex; range: west of Rocky Mts. 



14. californicus, new species 

 Upper face of front and middle tibiae white from base to apex; temple rather 

 strongly convex; range: Atlantic to 100° west longitude. 



15. vitticrus, new species 



I. TAENIATUS GROUP 



Median segments of male flagellum not widened; pronotum with a 

 white stripe on its upper margin, extending forward from its hind 

 corner; prepectal carina present below, its dorsal end near lower 0.15 

 of hind margin of pronotum, or in D. cuspidatus the prepectal carina 

 entirely lacking; lower half of mesepimeron almost bare, with a few 

 hairs along its hind margin above; propodeum without distinct 

 median longitudinal carinae; front and middle coxae and trochanters 

 of male not specialized, the middle coxa not even with the area of 

 dense fine hairs present in most of the rest of the genus; nervellus 

 broken near its upper 0.45; ovipositor sheath about 1.5 to 2.1 as long 

 as front wing; dorsal lobe at tip of lower valve of ovipositor rather 

 weak, apically tapered, with three ridges that slant forward and 

 downward, followed by more nearly vertical ridges (fig. 330, c). 



This group includes the three Nearctic species described below and 

 the Cuban (Ephialtes) Dolichomitus rufescens (Cresson) 1865 (new 

 combination). 



1. Dolichomitus dolichosoma (Viereck), new combination 



Figures 333,a; 345 



Ephialtes dolichosoma Viereck, 1912, Proc. U. S. Nat. Mus., vol. 42, p. 637; 9 . 

 Type: ?, Tryon, N. C. (Washington). 



Male: Front wing 5.7 to 7.0 mm. long; clypeus without a median 

 tooth; prepectal carina moderately strong; first tergite about 1.55 as 

 long as wide; second tergite about 1.20 as long as wide; tubercles on 

 third tergite rather convex, covered with moderately coarse punctures 

 whose interspaces are about 0.6 their diameter; subgenital plate as in 

 figure 333,a; genitalia as in figure 345. 



Black. Clypeus and mandible tinged with ferruginous; scape and 

 pedicel in front, palpi, tegula, rather broad stripe on upper edge of 



