208 BULLETIN 116, U2^ITED STATES NATIONAL MUSEUM. 



from the tip of the first joint, still the second and third joints are a 

 little yellowash at base. 



Described from 7 males and 3 females. Five males and the 3 

 females were taken in Colorado, one of them at Longview, June 24, 

 by E. C. Jackson; 1 male at Cloudcroft, New Mexico, June 17, 1902; 

 and 1 male at Dauphin, Manitoba, July 22, by Dr. E. M. Walker, to 

 whom the species is dedicated. 



Tyj)e.— Male, Cat. No. 23039, U.S.N.M., from Colorado. 



No. 149. DOLICHOPUS SPECIOSUS, new species. 



Male. — Length 4 mm.; of wing 3.8 mm. Face rather wide, dark 

 golden yellow. Front green, dulled with brownish pollen. Antennae 

 black; lower haK oi first joint yellow; third joint nearly orbicular in 

 outline, arista inserted near its base. Palpi small, yellowish. Lateral 

 and inferior orbital cilia yellowish white, about eight of the upper 

 cilia on each side black. 



Thorax dark green, a little dulled with gray pollen, which is almost 

 invisible on the dorsum and leaves a narrow median vitta more 

 shining green. Abdomen dark green; the white pollen on its sides 

 extending upon the dorsum. Hypopj^gium black; its lamellae 

 rather large, oval, a little longer than wide, whitish with black 

 border. 



Fore coxae yellow with a blackish spot at base on outer side, an- 

 terior surface covered with little black hairs; middle and hind coxae 

 black with their tips narrowly yellow. Femora and tibiae yellow. 

 Middle and hind femora each with one not very large preapical 

 bristle, the hind femora without cilia below, but with the little black 

 hairs on inner surface extending to the lower edge. Posterior tibiae 

 scarcely at all thickened, their tips black for about one-fifth their 

 length, but this black not sharply limited and extending further 

 towards the base on upper edge. Fore tarsi (fig. 149a) one and a 

 fourth times as long as their tibiae, infuscated from the base, becom- 

 ing darker apically, fourth and fifth joints black; second joint less 

 than half, third a fourth as long as the first, fourth a little shorter 

 than the third, a little compressed and widened, especially at tip; 

 fifth joint compressed, about three-fourths as long as first, oval, 

 about twice as long as wide, nearly straight below, fringed above 

 with little black hairs. Middle tarsi a little longer than their tibiae, 

 blackened almost from their base, still the first joint a little yellowish. 

 Hind tarsi wholly black, about one and a fourth times as long as their 

 tibiae. Calypters and halteres yellow, the former with black cilia, 

 middle tibiae with three bristles below, one pair at apical third and 

 one bristle at basal third, their basitarsi with a large bristle at or 

 near apical third of upper surface. 



Wings grayish (fig. 149) ; costa with a small kiiotlike enlargement 

 at the tip of first vein; last section of fom"th vein bent before its 



