Nlarch, 1920. 1 ALEXANDER: NEOTROPICAL CrAXE-FlIES. 3 



Mesonotal prsscutum reddish with a conspicuous black median stripe that 

 is broadest and most distinct in front, becoming obliterated before the suture ; 

 scutum, scutellum and postnotum black. Pleura mostly black, the mesepimera 

 a little paler. Halteres dark brownish black. Legs with the coxae dull reddish, 

 the fore coxae black ; trochanters dull reddish ; femora black, the bases nar- 

 rowly reddish ; remainder of the legs black. Wings grayish brown, the wing- 

 base indistinctly brighter; the costal region, stigma, tip of the wing and narrow 

 seams along the crossveins and deflections of veins dark brown ; veins dark 

 brown, R, Cti and 2d A more yellowish. Venation : Sc long, extending to be- 

 yond midlength of the long sector, Sco at the tip of .S"<r, ; r at the tip of R^, 

 longer than the apex of /?i beyond it; cell ist M, small, subquadrate; basal 

 deflection of Cu^ before the fork of M ; Cu„ shorter than the deflection of Cui. 



Abdominal tergites black, the caudal margins of segments two to five 

 broadly but indistinctly paler; stcrnitcs reddish brown. Hypopygium conspic- 

 uously reddish orange ; pleurites elongate, much longer than the relatively small 

 appendages; penis-guard conspicuous, about as long as the pleurites. 



Habitat. — Brazil. 



Holotype, J*. Igarape-Assu, Para, July i6, 1919 ( H. S. Parish). 



Paratype, J*, Obidoo, September 10, 1919 (H. S. Parish). 



Dicranomyia sanctae-cruzae new species. 



General coloration reddish yellow ; antennal flagellum dark brown ; legs 

 yellow, only the terminal tarsal segments darker; wings yellowish subhyaline 

 with sparse dark brown marks at the stigma, along the cord, at crossvein m 

 and on the 2d Anal vein. 



Male. — Length, 8.4 mm. ; wing, 12 mm. 



Female. — Length, 9—9.3 mm.; wing, 11. 5— 12.6 mm. 



Rostrum and palpi light yellow. Antennae with the scapal segments brown- 

 ish yellow, the flagellar segments dark brown, the intermediate flagellar seg- 

 ments oval in shape. Head reddish brown with a microscopic dense white 

 pubescence, the median line of the vertex darker. Eyes rather widely sepa- 

 rated by the vertex. 



Thorax reddish yellow, the mesonotal pr.xscutum with very indistinct 

 darker reddish stripes. Pleura reddish brown. Halteres pale. Legs with the 

 coxcc and trochanters dull yellow ; remainder of the legs pale yellow, the two 

 terminal tarsal segments dark brown ; last tarsal segment longer than the 

 penultimate ; claws with three teeth. Wings subhyaline, the yellow veins sur- 

 rounded by a pale yellow tinge; stigma brown, connected with a brown seam 

 at the fork of Rs; Cm^ and the basal deflection of Cm, seamed with brown; a 

 large brown area on crossvein mi ; the distal half of vein 2d A with a large 

 dark brown seam. Venation : 5"c, ending opposite the origin of Rs, Scz a short 

 distance back from the tip so that Sc^ alone is a little longer than r; basal 

 deflection of /?4*s about one half the length of the feebly sinuous sector; cell 

 1st A/j closed ; basal deflection of Ci<, at or some distance before the fork of M. 



Abdominal tergites reddish brown, the sternites yellowish, the subtcrminal 



