NO. 1920. NEW BEES AND ICHNEUMON-FLIES— VIERECK. 639 



cave; abdomen with the ai)ical half reddish tliroughout, second, 

 dorsal segment blackish at apex. 



Type-locality. — Davis, California. 



Type.— Cat. No. 14743, U.S.N.M. 



Labeled, "bred from Caradrina exigua Oct. 2G, 190S, Dr. Shaw, 

 Chittenden No. 2108°°. " Received from the Bureau of Entomology, 

 United States Department of Agriculture. 



Allotype. — Essentially as in the type, apical transverse carina of 

 propodeum more developed especially between the areola and 

 petiolarea; areola a])parently longer tlian ^v^dc; abdomen %vith black- 

 ish stains dorsally on ultimate and penultimate segments. 



Labeled, "Santa Ana, Calif., issued Sept. 30, 1908, bred from larva 

 of Caradrina exigua, Chittenden No. 1418°'." Bureau of Ento- 

 molog}^, United States Department of Agriculture. 



Genus IDECHTHIS (Foerster) Ashmeacl. 



As represented l)y IdecJithis patulus, new species, this genus is 

 apparently related to NotJianomalon Szepligeti from the original 

 description of which it differs es})ecially in the rather cubical Olesi- 

 campe like head, in the noncannate scutcl, in the propodeum not 

 being deeply furrowed and in the second doreal segment being little 

 shorter than the first. In this genus as represented by /. patulus 

 Viereck, the second abscissa of the discoidal vein is shorter than the 

 third, the nervellus is angulated below the middle and antifurcal, the 

 recurrent vein almost interstitial A\T,th the second transverse cubitus, 

 and the propodeum areolated, A\-i1h well developeil costulae, and ex- 

 tending beyond the middle of liind coxse but not to the apex of the 

 same. 



IDECHTHIS PATULUS, new species. 



Male. — Length, 11 mm.; black and shining; face rather rugulose; 

 clypeus with its anterior edge rounded, convex, separated from the 

 face only by the clypcal foramina, punctured; manchbles yellow, with 

 reddish teeth and stramineous margins; palpi stramineous; scape and 

 pedicel ycllowdsh beneath, dark above; flagel 42-jointed, blackish; 

 dorsulum punctured; fore and mid legs mostly yellowish or yellow; 

 hind coxae mostly black, tipped with yellow, hind trochanters yellow, 

 rest of hind legs dark brown, hind femora rather stramineous beneath ; 

 tegulpe and wing bases yellow; wings with a browniish tinge, veins and 

 stigma dark brown to blackish; propodeum coarsely sculptured; 

 areola and petiolarea confluent, the latter transvei-sely ribbed, 

 spiracularea and second pleural area confluent, the angular area, 

 third pleural area, and terminal half of petiolarea more or less con- 

 fluent; petiole nearly cylindrical; post petiole reddish at apex, its 

 spiracles about one-third as far from each other as from the apical 

 margin; petiole smooth and shining, feebly punctured; post petiole 



