322 J. CHESTER BRADLEY. 



%. — Here first described. Differs only in liaving less fuscous and no viola- 

 ceous reflection on the wing. 



Habitat. — Nevada, Washington. 



Types in the collection of the American Entomological Society. 



Deraiodoiitiis rii!«calatus uov. spec. 

 9 . — Black ; face punctate, vertex polished, shiny ; antennss black, 7 mm. long ; 

 mesothorax not gibbous, very broadly, not deeply emarginate, rugose; wings 

 hyaline, with strong violaceous reflection; a fuscous spot extending below the 

 stigma to the subdiscoidal nervure; the costal cell fuscous, and a fuscous baud 

 from the basal half of the median cell to the apex of the second discoidal, where 

 it joins with a fuscous band running the entire length of the anal nervure; legs 

 and feet black; petiole short, black above; the abdomen entirely red ; ovipositor 

 very short, 7.5 mm. Length 10 mm. 



Habitat — Washington, one specimen. 



Type in the collection of the American Entomological Society. 



Deraiodontuis flavicrurus nov. spec. 

 9. — Black; sparingly pubescent: face and vertex smooth, shiny; medial 

 mesothoracic lobe not gibbous, but emarginate; wings hyaline, without viola- 

 ceous reflection, a quadrate fuscous spot beneath the stigma, and the apex of the 

 anterior wings fuscous; a trace of fuscous in the median cell and along the trans- 

 verse medial and second recurrent nervures; legs flavous, hind coxse black, hind 

 femora castaneous; abdomen with a very long petiole, rufous, ])osterior segments 

 and petiole above black, 6 mm. long; ovipositor 11 mm. long. Length 11 mm. 



Habitat. — Virginia, one specimen. 



Type in the collection of the American Entomological Society. 



PRISTAULACIIS Kieffer. 

 1899. Pristaulncus Kieffer, Ann. Soc. Ent. Fr., Ixvii, p. 813. 



The anterior margin of the prothorax rounded, without an acute 

 tooth ; first transverse cuhitus interstitial with or close to the first 

 recurrent nervure ; tarsal claws with four teeth beneath, the fourth 

 one very small and blunt. See Plate XI, Fig. 7. 



Thorax decidedly gibbous {\n pacificus but slightly). 



Wings showing a strong violaceous reflection occidental i«i Cresson. 



Wings showing slight violaceous reflection ; fuscous spot beneath stigma pres- 

 ent in both % and 9 ; 'egs yellow inelleii!>i Cresson. 



Wings showing no violaceous reflection ; fuscous spot beneath stigma almost 



obliterated in male pacifictis Cresson. 



Thorax not gibbous. 



Wings violaceous, v^'ith a yellow hyaline band beneath the stigma. 



fasciatu$« Say. 



Pris^taiilacus occitleiitali!« Cresson. 

 1879. Aulacus occidentalis Cresson, 9 > Trans. Am. Ent. Soc, vii, p. 255. 



