﻿94 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lOO 



not produced; propleurum with weak, medium-sized punctures; 

 pronotum with strong coarse wrinkles, its anterior swelling with 

 scattered coarse punctures, its anterior edge without a projecting 

 tooth; hind coxa above rugosopunctate ; tarsal claws each with 4 

 teeth; ovipositor sheath about 0.86 as long as forewing. 



Light brown. Apical flagellar segments infuscate; wings suffused 

 with pale brown, the front wing marked with medium dark brown 

 (fig. 15, 6); hind wing a little darker brown anteriorly than elsewhere; 

 much of mesopleurum, metapleurum, and propodeum indefinitely- 

 marked with medium brown; hind coxa, apical 0.3 of first tergite, 

 and all of second tergite medium brown; ovipositor sheath light 

 brown, blackish apically. Hind legs beyond coxae lacking. 



Specimen. — Redescribed and figured from the unique type. 



4. AULACOSTETHUS MONT ANUS (Cresson), new combination 



Figure 15, c, I 



Aulacus montanus Cresson, Trans. Amer. Ent. Soc, vol. 7, p. 256, 1879. Type: 



9 , Nevada (Philadelphia) . 

 Deraiodontus fuscalatus Bradley, Trans. Amer. Ent. Soc, vol. 27, p. 321, 1901. 



Type: 9 , Washington (Philadelphia.) (New synonymy.) 

 Pristaulacus (Oleisoprister) dentatus Bradley, Trans. Amer. Ent. Soc, vol. 34, 



p. 126, 1908. Type: cf , Ormsby County, Nev. (Claremont, Calif.). (New 



synonymy.) 



Front margin of pronotum with a triangular projecting tooth; occipital 

 carina about 0.8 as high as the width of the first flagellar segment. 



Forewing about 9.5 mm. long; as seen from above, head about 0.78 

 as long as wide; frons with fine, weak, usually rather close punctures; 

 top of head with very fine, moderately distant punctures; as seen from 

 above, the temple about 0.8 as long as the eye, full, strongly convex; 

 occipital carina about 0.8 as high as the diameter of the first flagellar 

 segment, strongly reflexed; propleurum not distinctly punctate; 

 pronotum mostly with sharp, rather distant wrinkles, but its anterior 

 swelling smooth and with distant punctures; anterior edge of pronotum 

 with a triangular projecting tooth; hind coxa above with transverse 

 wrinkles; tarsal claws each with four teeth; ovipositor sheath about 

 1.5 as long as the forewing. 



Black. Second and third abdominal segments, apical part of first 

 segment, more or less of fourth segment, and sometimes basal part of 

 fifth segment ferruginous; forewing with dark fuscous spots as in 

 figure 15, c. 



The type of dentatus Bradley has four teeth on each tarsal claw, 

 rather than three as indicated by Bradley's placing it in Oleisoprister. 



Specimens. — 19cf, 13 9, from British Columbia (Seton Lake); 

 California (Alameda County, Fresno, Glacier Lodge on Big Pine 

 Creek in Inyo County at 4,000 to 5,000 feet, Gold Lake va. Sierra 



