46 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 74 



of legs and feet as in the male, fore tibiae normal, yellow; joints 

 of tarsi about as in the male; the spot of pollen at the transverse 

 suture is more white than in the male, the spot of white pollen above 

 the root of the wing is conspicuous. 



Described from five males and three females, taken by J. M. 

 Aldrich, May 25, 1926, at Tamau, Alta Vera Paz, Guatamala. 



ry/?^.— Male, Cat. No. 41055, U.S.N.M. 



PARACLIUS LATITIBIA, new species 



Male. — Length 3.6 mm. Face reaching lower border of the eyes, 

 golden yellow, narrow above, wider below, portion below the suture 

 nearly round, but obtusely pointed on the lower margin. Antennae 

 yellow, third joint a little longer than wide, rounded and brown at 

 tip ; arista nearly bare ; orbital cilia wholly black. 



Dorsum of thorax shining green, dulled with bro\yn pollen w^hen 

 viewed from in front, the space between the humeri and root of 

 wings covered with silvery white pollen ; pleurae with silvery pollen. 

 Abdomen blackish with green and purple reflections; sides of seg- 

 ments with large spots of silvery white pollen, the ground color of 

 these spots green. Hypopygium yellow, black at base, the lamellae 

 3^ellow, fringed with pale hairs and with a few black bristles at base. 



Fore coxae yellowish brown with black hairs and bristles, middle 

 ones black Avith a yellow tip, posterior pair black at base, yellow 

 on apical half or more ; femora and tibiae wholly yellow ; fore tibiae 

 (fig. 55) greatly flattened, elongate oval, 65 long to 23 wide, upper 

 surface wholly glabrous, covered with silvery white pollen, the hairs 

 on anterior edge and at tip white, the other hairs and the bristles 

 black, lower surface with a glabrous space, which extends the whole 

 width at tip and runs obliquely to the middle of anterior edge; 

 fore tarsi white, more yellow toward their tips; middle and hind 

 tarsi black from the tip of the first joint; posterior basitarsus with 

 a large bristle below. Joints of fore tarsi as 30-11-9-6-6; of 

 middle ones as 50-27-19-10-7; joints of posterior tarsi as 31—39- 

 24-13-11. Calypters and their cilia black; halteres yellow. 



Wings dark gray; costa without an enlargement; third vein nearly 

 straight, last section of fourth vein abruptly bent before its middle, 

 much arched beyond the bend, parallel with third vein for about 

 two-thirds the distance beyond the bend in fourth, reaching the wing 

 margin a little before the apex of the wing; last section of fifth 

 vein 21, cross vein twenty-three fiftieths of a millimeter long. 



Female. — The female (as I have associated the sexes) has the 

 face silvery white; the upper edge of the fore tibiae is distinctly 

 flattened, but not widened, the flattened stripe is glabrous and 

 silvery white; fore tarsi mostly yellow. Otherwise about as in the 

 male. 



