254 BRITISH (JUIANA TIPULIDAE 



Male. — Length, 12 to 12.1 mm.; wing, lO.S to 0.9 mm. 



Fore leg, femur, 7 mm. ; tibia, S.7 mm. ; tarsal segment 1, 8.8 mm. ; tarsal 

 segments 2 to 5 about 7.5 mm. 



Rostrum and palpi black. Frontal prolongation of the head yellow, the 

 nasus very small, indistinct. Antennae with the scapal segments yellow, 

 flagellum brownish black; segments 4 to 9 of the antennae unipectinate, the 

 pectinations a little longer than the segment, except on the 9th where it 

 is shorter, four apical segments simple. Head brownish gray, somewhat 

 shiny around the base of the antennae. 



Thoracic dorsum gray with four distinct brown stripes, the median 

 pair longest, broad in front, ending in a point behind near the suture; lat- 

 eral stripes short and broad, beginning behind the pseudosutural foveae, 

 ending at the transver.se suture; scutum gray, each lobe with a large brown 

 blotch on the cephalic margin this being a continuation of the lateral prae- 

 scutal stripe; scutellum gray, the caudal half dark brown; postnotum with 

 a gray bloom showing brown in certain lights; this gray and brown pattern is 

 variable in different lights. Pleura light brown with a gray bloom. Halteres 

 rather long, dark brown, pale at the base. Legs, coxae ami trochanters dull 

 yellow, femora yellow narrowly dark brown at the tip, tibiae and tarsi 

 brown. Wings with a slight dark suffusion; stigma brown; veins dark brown. 

 Venation: cross-vein r connects with /fj just beyond the origin of the latter; 

 i?2+3 longer than fl^ alone ; cross-vein i-/k short, punctiform;cen Ist .1/; large; 

 cell Ml broadly sessile, the portion of .1/2 that makes up the outer end of 

 cell Isl M2 about one-third as long as cross-vein m; fusion of Cu, and Af, 

 slight equal to about one-third of the cross-vein m. 



Abdominal tergite 2 with the basal half pale silvery gray, apical half 

 black; tergite 3 brownish yellow indistinctly ringed with blackish before 

 the middle and at the end of the segment, segments 4 to 6 brownish yellow 

 tipped with black, apical abdominal segments rather uniformly dark; six 

 basal sternites yellow, 7 and 8 brownish black, 9 yellow. 



Holotype, cf, Bartica, February 19, 1913, at light. 



Paratype, (f, topotypic, January 7, 1913, at light. 



From the other species of Ozodicera with the antennae unipecti- 

 nate, pedinata Wiedemann, yracilis Westwood, griseipennis Loew, 

 simplex Walker and bimaculata Enderlein, this form differs conspic- 

 uousl}^ in its very small size and gray thoracic coloration. The 

 species above listed have the wing over 15 mm. in length, nocii- 

 vagans having it under 12 mm. 



