NO. 1530. THE DECTICTN.E OF NORTH AMERICA— CA UDELL. 387 



The female described by Scudder as that of I. nevadensis is reall}- 

 that of inermis^ the only difference between that specimen and the 

 female tj^pes of inernih being the slightly longer posterior femora and 

 different color. But the specimens, male and female, taken by Baker 

 in Nevada, serve to prove these features A'ariational. 



IDIOSTATUS FEMORATA Scudder. 



Cncopferis feiiiorakL Bcuddek, Proc. Amer. Acad. Arts Sci., XXXV, 1899, pp. 88, 93; 

 Cat. Orth. U. s., 1900, ]). 78.— Woodwokth, Bull. No. 142, Calif. Exp. Stat., 

 1902, p. 15.— KiRBY, Syn. Cat. Orth., II, 1906, p. 194. 



Dtucrrption. — Female, male unknown — Pronotum with the lateral 

 lobes well developed and slightl}^ sinuate posteriorly; Uiteral carina? 

 indicated only on the posterior portion of the pronotum, where they 

 are quite distinct. Legs unusually long, the posterior femora moi'e than 

 four times as long as the pronotum; anterior tibia^ armed al)Ove on 

 both margins, three spines on the outer margin, two on the inner. 

 Cerci about as in the female of I. inerinis but less attenuate apically. 

 Ovipositor cohsiderably shorter than the posterior femora and feebly 

 curved upwards. 



Color uniformly dark f usco.-testaceous, the posterior femora lighter 

 Avith darkej' stripes on the outer and inner faces. 



Memuft'ements. — Length, pronotum, 5.75 mm.; posterior femora, 25; 

 elytra, 1; ovipositor, IS. 5. 



Type. — In the Scudder collecti«^:l. 



Specmiens examined. — The unique type, a female from South Santa 

 Monica, California (J. J. Rivers), is the only specimen of this species 

 seen. It was taken on July 80. 



IDIOSTATUS VARIEGATA, new species. 



De)<c)'lpti.on. — Female; male unknown. Head about as wide as the 

 anterior part of the pronotum into which it is moderately inserted; 

 vertex prominent and nearly one-half as broad as the intcroctilar 

 space; eyes medium in size, not prominent, rounded, narrowing 

 slightl}^ below; basal segment of the antenna no more than one-half 

 as broad as one of the eyes. Pronotum medimn in size and well pro- 

 duced posteriorly; lateral lobes well developed but not as deep as 

 long, moderately declivent, and slightly sinuate posteriorly; lateral 

 carime not at all indicated anteriorly, posteriorly scarcely so, being no 

 more than well-rounded shoulders; median carina not present; disk 

 transversely rounded, without transverse sulci, but marked on the 

 middle by a U-shaped depression; anterior and posterior margins trun- 

 cate, the former mesially a little concave. Prosternum unarmed. 

 Legs stout, the posterior femora three times as long as the pronotum, 

 nuich swollen on the basal two-thirds, and armed below-on each side 



