NO. 14S7. NOnril AMERICAN DIGGER WASPS— FERN ALD. 385 



large, with a distinct median depression, punctured like the mesonotum 

 but a little more sparsely; postscutellum faintl}^ punctured, rather 

 more hairy than the st-utellum, with a faint median depression; dorsum 

 of the median segment very tinely transversel}^ aciculate, thickly 

 clothed with short, erect, whitish hairs, which do not conceal the plate 

 beneath; fovea crescentic, at the angle between the dorsum and pos- 

 terior end, which is rounded, but, as a whole, nearly a right angle; 

 posterior end and .sides quite closelv covered with long, wliitish hairs 

 and sometimes with a small, pale yellowish pubescent spot on each 

 side, just above the petiole; meso- and metapleura rather sparsely, not 

 very coarsely punctured and bearing scattered whitish hairs; petiole 

 black, short, straight, with a few whitish hairs. 



Ahdomen. — Somewhat sericeous above, particularly on the anterior 

 segments, smooth except the last two plates, which are coarsely punc- 

 tured and bear short, brownish hairs, the punctures being more abun- 

 dant on the hinder plate; beneath glistening, with extremely minute 

 punctures, and here and there a larger one anteriorh", these becoming 

 more abundant posteriorly till they are quite abundant on the last two 

 plates; this distribution of punctures coincides with that of the short, 

 l)rown hairs also present. 



Wings. — Uniforml}' fuliginous, with a blue or violet reflection; 

 cubital vein of both pairs of wings obsolete bej'ond the ends of the 

 cells; transverse median vein of the hind wing somewhat curved, 

 making hardly more than a right angle with the median vein; tegul« 

 dull ferruginous, more or less mingled with darker. 



Legs. — Coxoe, trochanters, and the greater part of the femora black; 

 the outer ends of the femora, the tibise, and the tarsi, except the last 

 segment, 3'ellow ferruginous; last tarsal segment and claws dark or 

 l)jack; spines yellow ferruginous; coxre, trochanters, and femora 

 slightly sericeous in places and with short, scattered hairs. 



Length. — Females, 22-25 mm. 



The specimens of this species which I have seen were taken, one 

 June 20, 1883, at New Orleans, Louisiana; one in Georgia; one had no 

 data, and the others were taken August 23, 1902, at Indian Head, 

 Mar^dand, on the Hoovers of llondrda pi(netata Linnanis. 



This insect is easil}" confused with females of Cldorion ffavitarsis, 

 but may be separated from it ]\y the almost or entire absence of pubes- 

 cence and of au}^ short vein entering the median cell of the hind wing 

 from the cubital vein just beyond the junction of the latter with the 

 discoidal vein, both of these characters being present in C. jiavitarsis 

 and absent in C. hridwelli. 



