NO.H87. NORTH AMERICAN DIGGER WASPS— FERNALD. 379 



the same color; fore femora much compressed laterally; spines of the 

 leg's black; the claws near their middle with a faint fiM-ruo-inous tinge; 

 inner contour of the hind tibiw quite straight, their hind surface densely 

 brownish sericeous; hind metatarsi considerably curved. 



Variatioiis. — This description has been prepared from the two speci- 

 men 1 have seen. Kohl's description diti'ers in some regards, which 

 arc therefore given here as follows: Face clothed with white or 3'ellow 

 pubescence; inner margins of the eyes verv slightly converging down- 

 ward; lateral ocelli farther apart than the}' are from the ej^es; petiole 

 about as long as the second hind tarsal segment. 



Len</f/i.^Mii\QS, 25-31 mm. 



All the specimens of this species except one have oeen captured in 

 Mexico, but I tind no data as to the exact locality. This exception 

 was taken in August, 1*J05, at Carr Canyon, Cochise County, Arizona, 

 by Dr. Henry Skinner. Its most striking features seem to be the 

 curve of the posterior metatarsi and the reddish color on the abdomen, 

 this being ({uite reddish ferruginous, with (in the examples I have seen) 

 a distinct carmine shade. 



CHLORION (PROTEROSPHEX) FLAVITARSIS, new name. 



fSjihcx ojMtcu Uaiilbom, llym. Eur., I, 1845, p. 437. 



Splu'x flavipes Smith, Cat. Hyra. Brit. Mus., IV, 1856, p. 263. 



fSpliex tibiaUs Saussure, Reise d. Novara, Hym., 1867, p. 39. 



Sphe.v npaca Taschenbkro, Zeits. f. d. ges. Naturw., XXXIV, 1869, jt. 413. 



Sphc.rfaripes Patton, Proc. Bos. Soc. Nat. Hist., XX, 1880, p. 382. 



Sphe.v flar'rpes Kohl, Ann. natur. Hofmus. Wien, V, 1890, j). 404. 



Sphrx tidv'ipcs H. Fekxali), Psyche, X, 1903, pp. 202-204. 



Large, quite robust; the body black; outer portion of the legs rusty 

 yellow; wings fuliginous with a slight violet retlection; hairs 3'ellow- 

 ish; pubescence yellow. 



Female. — Head broad, black, covered with long, yellowish hairs; 

 clypeus somewhat arched, its anterior edge rounded, with a slight 

 notch in its middle separating two very short, rather blunt teeth; the 

 sui-face of the clypeus yellow pubescent as is also that of the frons to 

 al)ove the insertion of the aiitennte; vertex very minutely punctured 

 and with scattered, larger punctures; cheeks narrow behind the eyes, 

 about half the width of the eye, with long, coppery -yellow hairs, and 

 yellow pubescent near the middle bdow; iimer margins of the eyes 

 about parallel; antenni\? black, the scape with a few yellowish hairs 

 and slightly yellowish pubescent inwardly and beneath; tirst segment 

 of the filament the longest; mandibles long, two-toothed, black at the 

 base and at the tip of the anterior and all of the terminal tooth, the 

 remainder ferruginous. 



Thorax. — Collar l)lack, with scattering yellow hairs and a narrow, 

 yellow, pul)escent band on the dorsal edge; prothoracic lo))e yellow 

 pubescent, particularly behind; mesonotum covered with short, yel- 



