NO. 1530. THE DECTICIN.E OF NORTH AMERICA— CA UDELL. 409 



are taken from Thomas's original description, was drawn up from a 

 male in the Scudder collection from lluby ^"alle3^, Nevada (Ridgeway), 

 and a female in the Morse collection from Mary's Peak, Benton 

 County, Oregon, September 10, 1897. This female may be wrongly 

 associated but the male is ver}- certainly proper!}- placed. The species 

 has also been recorded from Utah and Idaho. 



The cerci of the male in this species seems to represent a type 

 derived from that of S. tri/ineata, the inner tooth having become 

 slightl}^ smaller and moved back toward the ])ase (tig. 03). The two 

 forms of cerci are, however, quite distinct. 



The National Museum contains one much shrivelled female from 

 Idaho, evident!}^ preserved in spirits and afterwards dried, which is 

 labeled in the handwriting of Professor Thomas 

 as questionably /S". paUldipalpus. Also one fe- 

 male from Pocatello, Idaho, one without label 

 and a male from east Washington. This male, 

 which is referred here with some doubt, has the 

 cerci shaped as shown in tig. 93, and the posterior Fm. 93.— steiroxys pal- 



j! ciC\ • 1 i.1 T» L IJDIPALPITS. CERCUS OF 



femora measure 22 mm. ui length. Bruner has u.ilt m\i,e (variety). 

 a number of both sexes from Washington, Idaho, 

 W3^oming, and California. Kelin records it from Utah. 



The specimen tigured by (jlover^' as this species is ver}- sureh" 

 wrongl>' identitied, probably belonging to the genus Erem-opedes or 

 StlpatoT, 



STEIROXYS BOREALIS Scudder. 



Steiroxys horealis Scudder, Can. Knt., XXYI, 1894, p. 182; Index N. A. Orth., 

 1901, p. 300.— WooDWORTH, Bull., p. 142, Calif. Exp. Stat, 1902, p. 15.— 

 KiRHY, Syn. Cat. Orth., II, I90(i, p. 194. 



Description. — Head and pronotum as in S. triUneata. Elytra of 

 the male projecting scarcely- one-half the length of the pronotum, 

 broad, overlapping above, of the female slight^ projecting lateral 

 lobes. Legs moderately long; the posterior femora swollen on the 

 l)asal two-thirds and unarmed beneath; anterior tibia^ armed above 

 on the outer side only with three spines. Abdomen moderately heav}', 

 dorsalh' subcarinate; cerci of the female conical, variable in length, 

 sometimes seeming!}^ less than four times as long as the basal width 

 while in some specimens referred here they are fully tive times as 

 long. The cerci of the male are strikingly ditl'erent from those of 

 either of the preceeding species, being basally much compressed, no 

 more tlian one-half as broad as deep and apically divided into two 

 equal incurved hard black claws (tig. 94). Ovipositor moderately stout, 

 scarcely as long as, or but little longer than, the posterior femora, 

 slightly curved upward, apicallv pointed and unarmed. 



. «I11. N. A. Ent., Orth., 1872, pi. ix, fig. 8. 



