NO. 1530. THE DECTICINjE OF NORTH AMERICA— CA UDELL. 293 



Color brownish yellow with the borders of the pronotum and middle 

 portions of the posterior femora a])ove mottled with black. Antennie 

 with the second segment, brown, the rest fuscous, with every fifth or 

 sixth segment light, toward the apex the light-colored ones becoming 

 more remote from each other and more or less obscured, in some 

 specimens the whole antenna l)eing nearly uniformly fuscous. The 

 anterior and intermediate femora are sometimes more or less dis- 

 tinctly banded on the apical half with fuscous. Some specimens are 

 brown, but even here the black markings are easily seen. 



Measurements. — Length, adult male, female in that stage unknown, 

 pronotum, 13-13 nun. ; posterior femora, 17-19; posterior tibia?, 18-20; 

 cerci, .75; greatest width, pronotal disk, 7-8.5; posterior femora, basal 

 portion, 3.75-4.25; apical portion, 1.25-1.5. 



Ti/pe.— In the Museum of Comparative Zoology, Cambridge, Massa- 

 chusetts. 



Sjjechnens examined. — Two adult males, Los Angeles County, Cali- 

 fornia, July, and one immature male, same place, June; one immature 

 female, ISan Bernardino Mountains, June (Coquillett). 



This species was described from a single male (tig. 2) from which the 

 greater part of the antennte was missing; this specimen, now in the 

 Scudder collection in Camln'idge, Massachusetts, was taken by D. A. 

 Saunders in California, no definite locality given. I have examined the 

 type. 



The two immature specimens, male and female, in the National 

 Museum collection are darker, especially the male, than the adults, and 

 the pronotal disk even more rounded, the part posterior of the ante- 

 rior constriction being nearly or quite as broad as long. 



Nothing is known of the habits of this species. Mr. Coquillett 

 thiidcs he took his specimens among rocks in a canyon. 



AGLAOTHORAX CASTANEUS Scudder. 



Trojnzaspis castanca Scudder, Proc. Amer. Acad. Arts Sci., XXXV, 1899, pp. 

 83, 84; Cat. Orth. U. S., 1900, p. 77.— Woodwortii, Bull. No. 142, Calif. Exp. 

 Station, 1902, i>. 15.— Kirby, Syn. Cat. Orth., II, 1906, ]>. 191. 



De><cript'ton. —In general appearance this species is very like the pre- 

 ceding one, being colored practicall}^ the same, some dark brown and 

 others brownish yellow, as in ovatus. The pronotal disk, however, has 

 the anterior constriction slightly more remote from the anterior mar- 

 gin (tig. 4). The most striking difierence lies in the male genitalia. 

 Here the last abdominal segment is almost truncate, the lateral angles 

 sharp; cerci more elongate, being at least two times as long as the basal 

 width. Inf racercal plates more depressed, together scarcely broader 

 than the last abdominal segment and the portion beyond that segment 

 but little longer than wide (tig. 5.) Subgenital plate nearly like that of 

 A. ova the styles usual! \' even more inconspicuous. 



