SCUDDER. NORTH AMERICAN CEUTHOPHILI. 53 



Length of body, $ 8 mm., 9 11.5 mm.; pronotum, $ 2.7 mm., 

 9 3.75 mm. ; fore femora, $ 3.75 mm., 9 5 mm. ; hind femora, 

 7.5 mm., 9 10 mm. ; hind tibiae, $ 8 mm., 9 10.2 mm. ; ovipositor, 

 8 mm. 



3 <J, 9 9 St. George, Utah, April 1-12, E. Palmer ; Prescott Mt. 

 district, Central Arizona, E. Palmer. One specimen was collected by 

 Xantus, locality not mentioned but not improbably Cape St. Lucas, 

 Lower California. In the U. S. National Museum are 3 <J, 1 9, 

 from Ft. Wingate, N. Mex. (Shufeldt), in the Riley collection. 



18. CEUTHOPHILUS UNIFORMIS, sp. nov. 



Ceuthophilus pallidus Scudd. !, Bull. U. S. Geol. Geogr. Surv. Terr., 

 ii. 261 (1876) ; Id. !, Ann. Rep. Geogr. Surv. West 100th Mer., 1876, 

 279; Brun.?, Bull. Washb. Coll., i. 126 (1885), i. 194-195 (1886); 

 Id. ?, Publ. Nebr. Acad. Sc., iii. 32 (1893). 



Smoky luteo-testaceous with a slight olivaceous tinge, glabrous, 

 marked more or less deeply with fuscous along the posterior margins of 

 the segments and generally along the anterior margin of the pronotum ; 

 in this posterior infuscation are indistinct dots of luteous in a trans- 

 verse series ; generally there is also a mediodorsal luteous line over 

 all the segments but deepest and broadest on the pronotum, which is 

 also laterally irregularly streaked, clouded, or blotched with luteous ; 

 beyond the lighter more luteous bases of the femora, the legs are of 

 the body color, but the hind femora are considerably inf'uscated in a 

 scalariform pattern, apically confluent. The antennae are slender and 

 nearly or quite three times the length of the body and the legs are 

 moderately short. Fore femora no stouter than the middle femora, 

 more than a third ($} or less than a fourth (9) longer than the 

 pronotum and somewhat less than half as long as the hind femora, 

 the inner carina armed only with a subapical spine. Middle femora 

 with two spines on the front carina, and on the hind carina 2-3 (9) 

 or 3-4 (c) spines besides a not very long genicular spine. Hind 

 femora nearly as long as ($} or much shorter than (9) the body, 

 a little more than twice as long as the fore femora especially in the 9 , 

 pretty stout, in the $ being but a little more than two and a half times 

 longer than broad, though in the 9 fully three and a quarter times as 

 long as broad, with no raised points on the surface, or at most four or 

 five scattered insignificant ones on the inner surface in the , the 

 outer carina with a few spinous points on the distal half, the inner 

 carina similarly armed but in the weaker, the intervening sulcus 

 narrow. Hind tibiae scarcely or no longer than the femora, straight 



