March, 1920.] ALEXANDER: XeOTROPICAL CrANE-FlIES. 9 



flies, the three basal segments orange, thence passing into black ; segments four 

 to nine each bears a single short pectination which is shorter than the seg- 

 ment that bears it ; the last four flagellar segments are greatly elongated, 

 filiform, their combined length considerably exceeding the remainder of the 

 antenna. Head yellowish tawny, the vertex very narrow between the large eyes. 



Mesonotal praescutum yellowish tawny with four dark reddish brown 

 stripes; remainder of the mesonotum brown, sparsely pruinose, especially the 

 postnotum. Pleura light reddish brown, sparsely white pruinose. Haltcres 

 brown, the knobs a little darker. Legs with the coxae reddish brown, gray 

 pruinose; trochanters and femora dull brownish yellow; tibiae yellowish brown; 

 tarsi dark brown, very long and slender. Wings light gray, the base of the 

 wing and the costal region more brownish yellow; stigma elongate, grayish; 

 veins yellowish brown, C, Sc and Cu more yellowish. Venation : tip of 7?, 

 pale ; r-m very short to almost obliterated by the approximation of veins 

 i?4 + 5 and Mi + o; cell Mj broadly sessile; »i-ci« obliterated by the punctiform 

 contact of Cu^ on Mj + 4. 



Abdominal tergites yellow, the lateral margins of the segments broadly 

 brown, this mark widening on the fourth and succeeding segments to include 

 most of the segments; sternites reddish yellow, segments seven and eight 

 darker. Hypopygium reddish, the pleurites long, slender, bearing the com- 

 pressed pleural appendages at their tips. 



Habitat. — Brazil. 



Holotype, (^, Prata, Para, July 5, 1919 (H. S. Parish). 



Ozodicera attcnnata is closest to O. gracilis (Westwood) and 

 O. griscipcnnis Loew. It is characterized by the very short antcnnal 

 pectinations, the attenuated apical flagellar segments, the quadrivit- 

 tate thorax- and the dark lateral margins to the abdominal tergites. 

 O. gracilis has the apical flagellar segments less elongated and the 

 thorax subvittate; O. griseipennis has the median priescutal stripe 

 entire and the abdomen with a dark brown dorso-median stripe. 



Pectinotipula new genus. 



Antennae 13-segmented, in the male with the terminal ten seg- 

 ments each with two long pectinations that exceed in length the seg- 

 ments that bear them; flagellar segments verticillatc. Venation 

 with cell first M„ small as in Tipula; cell .U, long-petiolatc. Male 

 hypopygium as in Tipula, the ninth tergite. pleurite and stcrnitc being 

 entirely distinct; eighth sternite with a long, conspicuous median 

 appendage. Coloration as in species of the monilifcra group of the 

 genus Tipula, the body with a capillary brown dorso-median line, the 

 praescutum with the interspaces set with tiny brown sctigerous 

 inmctures. 



