76 PROCEEDINGS OF THE AMERICAN ACADEMY. 



35. Ceuthophilus divergens. 



Ceuthophilus divergens Scudd.!, Bost. Journ. Nat. Hist., vii. 436 

 (1862) ; Walk., Cat. Derm. Salt. Brit. Mus., i. 201 (1869) ; Thorn. ?, 

 Proc. Acad. Nat. Sc. Philad., 1870, 77 ; Id. r, Ann. Rep. U. S. Geol. 

 Geogr. Surv. Terr., ii. 265, 269 (1871) ; Id.?, Bull. U. S. Geol. Geogr. 

 Surv. Terr., iv. 485 (1878) ; Ril., Stand. Nat. Hist., ii. 184 (1884); 

 Blatchl., Proc. lud. Acad. Sc, 1892, 153 (1894). 



Body subglabrous, dark blackish fuscous above, passing on the sides 

 into rufo-testaceous more or less tinged with luteous, and with blotches 

 and irregular spots of the same above ; especially to be noted are a 

 mediodorsal rufo-luteous interrupted stripe and on the sides of the 

 pronotum a large spot of the same much vermiculate with fuscous ; 

 the abdomen is also more or less spotted with the same ; the legs are 

 dingy luteous, all the femora tipped with fuscous and the hind femora 

 heavily marked with fuscous in a scalariform pattern. The antennae 

 are moderately slender and three or four times as long as the body, and 

 the legs are rather long and slender, with jjrominent spines. Fore 

 femora no stouter, but in the male slightly shorter, than the middle 

 femora, much less than half as long as the hind femora and but little 

 longer than the pronotum, the inner carina with 2-3 spines, the sub- 

 apical long. Middle femora with 2-3 spines on the front carina, the 

 subapical longest, and on the hind carina two small spines besides a 

 long genicular spine. Hind femora about as long as the body, about 

 two and a half times longer than the fore femora, moderately stout 

 particularly in the male, where they are less than three and a half times 

 while in the female they are nearly four times as long as broad, the 

 middle of the inner surface in the male with a considerable cluster of 

 raised points on the upper half, the outer carina with about ten unequal 

 stout teeth the largest shorter but stouter than the tibial spurs (J* ) or 

 apically with a series of subdued serrulations (9 ), the inner carina in 

 9 armed like the outer carina but very inconspicuously, in the $ as in 

 the 9 but more conspicuously, the intervening carina narrow. Hind 

 tibia3 scarcely longer than the femora, straight in both sexes, slender, 

 distinctly though feebly constricted at the base, faintly enlarging above 

 toward the apex, armed beneath with a single subapical spine besides 

 the apical pair ; spurs subalternate, the basal at the end of the proximal 

 fourtli of the tibia, nearly or quite twice as long as the tibial depth, set 

 at an angle of about 70° with the tibia and divaricating from 130° to 

 180°, their tips incurved; inner middle calcaria much longer than the 

 outer, fully twice as long as the othei's or as the spurs, and as long as 



