494 PROCEEDINGS OF THE ACADEMY OP [Oct., 



scutum, scutellum and postnotum reddish gray. Pleura uniform 

 gray. Halteres short, yellow, the knobs brown. Legs with the 

 coxse brownish yellow; trochanters yellow; femora brown, the basal 

 and apical quarters yellowish, a rather broad, brown subterminal 

 ring; tibiae and tarsi dark brown. Wings almost hyaline, the costal 

 area pale yellow; stigma rounded, pale brown; a darker brown spot 

 at the tip of Sc and at the origin of Rs; a very indistinct seam along 

 the cord. Venation (Plate XXV, fig. 8) : Sc rather long, ending at 

 about one-third the length of the sector. 



Abdominal tergites brown, the sternites more yellowish. 



Habitat. — South-central United States. 



Holotype, 9 , Hot Springs, Arkansas, June 26, 1904 (H. S. Barber). 



Type in the collection of the United States National Museum. 



Differs from G. insignis Loew (Plate XXV, fig. 9) in the more 

 grayish ground-color of the praescutum with still narrower stripes, 

 the clear gray pleura and the paler wing-pattern; differs from 

 plumbeipleura Alexander in the very narrow praescutal stripes, these 

 stripes not as wide as the interspaces, the pale scutal lobes and the 

 pale wing-pattern; from numenius Alexander it differs in the much 

 shorter rostrum. 

 Geranomyia costaricensis sp. n. (Extra-limital.) 



Related to insignis Loew; mesonotal praescutum with two approxi- 

 mated dorsal brown stripes; pleura yellow with a large brown mark 

 on the mesopleurites; femora with the apex broadly yellow, with a 

 narrow subterminal ring; wings subhy aline with four dark brown 

 subcostal marks and paler seams to the veins. 



Female. — Length, excluding the rostrum, 8 mm.; wing, 7.8 mm.; 

 rostrum, about 3.3 mm. 



Rostrum moderately elongated, dark brownish black. Antennae 

 with the first segment black with a sparse grayish bloom; second 

 segment brownish, paler toward the tip; flagellar segments black, 

 elongate-oval. Head brownish gray. 



Mesonotal prsescutum clear light yellow with two broad reddish 

 brown dorsal stripes, one on either side of the very narrow middle 

 line, these stripes barely attaining the suture; lateral margin of the 

 sclerite brown, widely separated from the median stripes; scutum 

 with the median area broadly yellowish white, the lobes brown; 

 scutellum pale; postnotum yellowish brown. Pleura dull yellow, 

 a large brown blotch on the mesopleurites and a similar one on the 

 lateral portions of the postnotum. Halteres yellow, the knobs 

 brown. Legs with the coxae and trochanters light yellow; femora 



