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II. New or LiUle-hnoivn Exotic Tipiilidae (Diptera). 

 By Prof. Charles P. Alexander, F.E.S. 



[Read October 19th, 1921.] 



During the course of the writer's studies on the crane- 

 flies of tropical America, a large number of undescribed 

 species were discovered, some of which are discussed in 

 the present paper. The material studied was received 

 from several sources, the more important of which are as 

 follows : British Museum of Natural History, through the 

 kindness of Mr. Edwards; Hungarian Museum, through 

 Dr. Kertesz ; and the Vienna Museum, through Dr. Zerny. 

 The latter collections were of especial importance in that 

 they contained the type specimens of many species described 

 by Wiedemann, Schiner and Loew. Some of the species 

 of the genus Eriocera described by Wiedemann and Schiner 

 are re-described from these types. The location of the 

 types of the novelties discussed herein is mentioned in 

 connection with each species. The writer would express 

 his thanks to Mr. Edwards, Dr. Kertesz and Dr. Zerny 

 for the privilege of examining these important collections 

 of Neotropical Tipulidae. 



Geranornyia (Geranomyia) lacteitarsis, sp^ n. 



Head grey; mesonotum shiny, dark brown, the praescutvuii 

 paler medially; pleura yellow with a very broad and conspicuous 

 dark brown longitudinal stripe; legs jjale brown, the posterior 

 tarsi cream-colour; posterior metatarsi flattened; wings strongly 

 infumed, the costal, subcostal, and radial cells with subhyaline 

 centres; cell \st R\ very wide at base; abdominal tergites dark 

 brown, sternites light yellow, variegated with brown. 



Male. — Length (excluding the rostrum) 6'8 mm. ; wing 6'4 mm. ; 

 rostrum alone 3'9 mm. 



Rostrum elongate, exceeding the combined head and thorax, 

 dark brownish black, paler basally; palpi brown. Antennal scape 

 obscure testaceous yellow, flagellum dark brown ; flagellar segments 

 elongate-cylindrical. Vertex between the ej'^es very narrow, 

 reduced to a capillary strip; head dark, pruinose, the anterior 

 part of vertex more yellowish. 



TRANS, ENT. SOC. LOND. 1922. — PARTS I, II. (jULY) 



