86 Psyche [June 



green, sometimes with coppery reflections on the posterior part, in one specimen 

 with purple reflections on the anterior part; pleurae green witli the posterior edge 

 yellow. Abdomen bright green with the first two segments almost entirely yellow; 

 venter yellow; hypopygium (Fig. 1) brown with the base yellowish; its appendages 

 yellow, the lamella with mixed yellow and black hairs. Coxae and feet pale yellow 

 with yellow hairs. Tegulae, their cilia and the halters yellow. Wings hyaline, 

 slightly tinged with gray; veins yellowish. 



Redescribed from four males: one in the Cornell University 

 collection, taken about the first of June at Columbus, Mo., by 

 C. R. Crosby; one in the collection of C. W. Johnson and taken 

 at Hot Springs, N. C, and two from Opelousas, La., in April. 



In the drawing the central filament is separated from its sheath 

 and bent upwards, usually it is carried in its sheath and they 

 appear to form one piece. 



Thrypticus vietus sp. nov. 



Male: Length 2 mm. Eyes contiguous (or seem to be, the head is shrunken) ; 

 front green; palpi yellow; antennae yellow, darker at tip; bristles of the head and 

 the arista yellowish, but brown in certain lights. Thorax bright but dark green; 

 abdomen dark metallic green with slight violet reflections toward the base; hairs 

 and bristles of the thorax and abdomen yellow; hypopygium (Fig. 3) brown with 

 yellow appendages; lamella oval, rather large; filament black with yellow tip which 

 is a little spear-shaped. Fore coxae yellow; middle and hind coxae black with 

 yellow tips; femora, tibiae and tarsi pale yellow, their hairs mostly yellowish. 

 Tegulae, their cilia and the halters yellow. Wings grayish hyaline; veins brown; 

 third and fourth veins parallel. 



Female: Ovipositor minute, reddish yellow; tip of the abdomen and the base 

 of the segments reddish coppery; face bluish green. 



Described from one male and one female which I took at Braden- 

 town, Fla., March, Type in the author's collection. 



Thrypticus comosus sp. nov. 

 Male: Length 1.75 mm. Face dark green, shining, wide at the antennae but 

 the eyes almost meeting at the oral margin; mouth parts yellowish; Front dark 

 green, ocellar bristles brownish yellow; antennae dull black, small. Thorax and 

 abdomen dark green, very shining, the former with slight golden reflections; 

 bristles of the thorax and abdomen yellowish; hypopygium black, shining, its 

 appendages yellow; (Fig. 7); lamella large with minute pubescence and several 

 bristly hairs on the surface, behind the lamella there is a slender bristly appendage 

 and back of this two long slender hairs, which are nearly as long as the hypopygium; 

 filament dark yellow. Fore coxae yellow; middle and hind coxae black with greenish 

 reflections and yellowish tips; femora, tibiae and tarsi pale yellow; last joint of 

 the middle and last two joints of the fore tarsi blackish. Tegulae, their cilia and 

 the halters yellowish. Wings hyaline; veins brown; venation as in ivillistoni. 



