16 PROCEEDINGS OF THE NATIONAL MUSEUM vol.83 



moderately divergent downward, practically bare; vibrissae on level 

 with front edge of mouth; antennae as long as the face, basal seg- 

 ments yellow, second distinctly longer than the first and about one- 

 sixth the length of third, which is black except at extreme base; 

 arista brown, thickened on basal fourth, slender beyond middle, sec- 

 ond segment short; parafacial bearing a row of bristles, which be- 

 come longer and stronger downward, a few hairs outside the large 

 bristles on lower extremity; cheek nearly two-fifths the eye height; 

 palpi but little longer than thickness of proboscis at point of attach- 

 ment, pale yellow, bearing two black hairs near apex ; eyes practically 

 bare. 



Thorax and scutellum black, gray pollinose; four black stripes 

 on mesonotum, outer ones broader, stopping shortly before base of 

 scutellum. Chaetotaxy as in conica; scutellum with two laterals 

 (posterior pair large and divergent), one decussate apical and a 

 weak discal pair ; postscutellum thinly pollinose ; inf rasquamal hairs 

 absent; calypters tawny. 



Abdomen shining black on broad hind margins of last three seg- 

 ments, basal segment without, second with one pair of large median 

 marginal bristles; third and fourth each with a complete row of 

 about 12; no discals; inner forceps united, slender on apical half, 

 in profile slightly bowed forward at tip; penis simple, terminating 

 in a short pale membrane ; fifth sternite with a narrow deep incision, 

 the lobes blackish. 



Legs reddish black; claws and pulvilli moderately elongated. 



Wings subhyaline ; venation normal ; third vein with hairs extend- 

 ing almost to small cross vein ; apical cell open shortly before the wing 

 tip; costal spine strong; epaulets red. 



Female. — Front at vertex 0.292 of the head width (one specimen) ; 

 third antennal segment very slender, four to five times longer than 

 second ; outer verticals not developed ; two pairs of proclinate orbit- 

 als; fore tarsi rather slender, compressed and tapering outward, 

 claws and pulvilli minute. 



Length. — 6.5 to 7.5 mm. 



Remarks. — Redescribed from one male and one female in the 

 United States National Museum from Miami, Fla., October 8 and 15 

 (C. H. T. Townsend). 



(5) CERATOMYIELLA ORBITALIS, new gpedes 



Male. — Front at vertex 0.25 of the head width (one specimen), 

 widening gradually downward to antennae ; paraf rontals gray polli- 

 nose to vertex, sparsely haired; median stripe reddish brown, as 

 wide as one paraf rontal except at antennae ; one pair of weak orbitals 

 present; outer verticals not developed; ocellars proclinate; frontal 



