126 C. H. TYLER TOWNSKND. 



slightly vaulted, first segment somewhat shortened; macrochastse 

 marginal and discal, at least on anal segment, |)resent on all seg- 

 ments. Legs of moderate length, somewhat bristly, femora rather 

 stout, metatarsi somewhat shorter than following joints together ; 

 claws and pulvilli very short ( 9 )• Wings as long as abdomen, with 

 well-marked costal spine, third vein bristly at base; apical cell 

 closed and rather long petiolate, petiole terminating on front border 

 of wing well before tip ; fourth vein bent at an oblique angle, without 

 stump or wrinkle at bend, apical cross-vein nearly straight; hind 

 cross-vein straight, or nearly so, a little nearer to small cross-vein 

 than to bend of fourth vein, or about in the middle between the two. 

 Type, C. pidicornis n. sp. 



C)liietoo;Po!!«sa pictieornJ!!* n. sp 9 .—Eyes ln-owu, frontal vitta bniwiiish 

 rufous; sides of front nearly black, shining; face and clieeks flesh colored, sil- 

 very-white jiollinose; antennsp wholly clear orange, second joint slightly elon- 

 gate, arista dark brown; proboscis black, palpi light orange; occiput blackish, 

 black-bristly. Thorax shining black, slightly silvery, leaving three very heavy 

 more or less distinct black vitt?e ; scutelluni shining black, slightly silvery. Ab- 

 domen shining black, base.s of segments two to four silvery; first and second 

 segments with a lateral macrochfeta and a median marginal pair, third wjth 

 about eight marginal, anal with a marginal and discal row of shorter ones 

 Legs black, femora and tibiie somewhat bristly; pulvilli short, smoky whitish. 

 Wings grayish hyaline, pale tawny at base; tegulse nearly white, halteres black- 

 ish, rufous at base. Length of body 5 mm. ; of wing 3.5 mm. 



Described from two specimens; So. Florida (Chas. Robertson). 



<^li^to;a;lo*iiSa violte n. sp. 9.— Differs from C. picticornis as follows: An- 

 tennae and arista black, except first two antennal joints, which are pale rufous, 

 third antennal joint somewhat longer and heavier toward tip, second joint not 

 elongate; vittse and macroclijeta- same. Wings rather rufous at base, tegulie 

 almost white. Length of body 4 — 5 mm. ; of wing 3 — 3.5 mm. 



Described from three specimens ; So. Florida (Chas. Robertson). 

 This was named violce on the suggestion of Mr. Robertson, who found 

 it to frequent more particularly the flowers of Viola. 



Cliietoglossa nisripalpis n. sp. 9-— Differs from C. picticornis as fol- 

 lows: Antennse like C. violx, except third joint proportionally longer ; face and 

 cheeks more distinctly silvery-white ; vittse of thorax same. Abdominal mac- 

 rochsetse same, except that third segment has in addition a discal pair. Wings 

 rufous at base, tegulae almost white. Length of body 9 mm. ; of wing 4 mm. 



Described from one specimen; So. Florida, February 23d (Chas. 

 Robertson). 



