154 THOMAS SAY FOUNDATION 



the tip, perfectly straight on front side; viewed from 

 behind they are not divergent, and are blunt, almost 

 truncate at tip; accessory plate small, turned in 

 against forceps; posterior claspers yellow, flat and 

 curved forward, with a long hair about middle; an- 

 terior clasper dark at tip, slender and rather straight. 

 Penis with long, curved, yellow basal joint, the dis- 

 tal one suddenly enlarging in front and behind; in 

 front it spreads out into a disk that runs back some- 

 what toward the base; behind it slopes back, then 

 downward into a minute hooded terminal tube; be- 

 tween this tube and the disk in front is a large cavity 

 open apically but closed on the sides. Fifth sternite 

 showing as two little pads with a brush of small bris- 

 tles. 



Legs black; middle femur not with combs; mid- 

 dle tibia with two bristles on outer front side; hind 

 tibia not with villosity. 



Wings subhyaline ; a moderate costal spine ; first 

 and third veins hairy; third costal segment three- 

 fifths of the fifth. 



Female. Front .333 of head in width ; the usual 

 orbitals, and the outer vertical developed; frontals 

 and occipital hairs as in male; ant acr absent; pre- 

 scutellar very small; third abdominal segment with 

 marginal row of 8 or 10 ; fourth segment almost whol- 

 ly red, its sides converging almost to a point, and the 

 transverse row of bristles located a little beyond the 

 middle ; the infolded sides of the fourth segment con- 

 ceal the genital segment. 



Length S^/o mm. 



One male, one female, Havana, Cuba (C. F. 

 Baker). 



Holotvpe and allotvpe. — Male and female. No. 

 20532, U. *S. N. M. 



No. 72. Sarcophag-a surrubea V. d. W. 



Van der Wulp, Biologia Centrali Americana, Dipt., ii, 

 273. — Mexico. 



Male. Front .233 of head (average of five, — 



.216, .220, .240, .242, .245) ; parafrontals and para- 



