100 PROCEEDINGS OF THE ACADEMY OF [Part I 



black; scutellum brown; postnotum brownish yellow, the median 

 area broadly black. Pleura testaceous yellow. Halteres yellowish 

 brown, the knobs dark brown. Legs with the coxae concolorous 

 with the thoracic pleura; trochanters with a faint greenish tinge; 

 femora brown, testaceous basally, passing into dark brown at their 

 tips; remainder of the legs dark brownish black; claws simple. 

 Wings hyaline, the costal cell brown, the subcostal cell dark brown; 

 stigma dark brown; wing-apex broadly darkened; veins beyond the 

 cord broadly seamed with brown; veins brownish black; veins, with 

 the exception of C and R, destitute of macrotrichiae. Venation: 

 Sc ending opposite or sHghtly beyond the fork of Rs, Sci indistinct, 

 Rs very short, arcuated, less than R2+3, tip of R2 preserved but 

 weak; R3 more than twice R2+3; r-m short to very short; cell 1st Mi 

 very large, roughly quadrate; petiole of cell Mi shorter than m; 

 fusion of Cui with Mz extensive, about equal to the petiole of cell 

 Ml', 2nd Anal vein straight, not close to the axillary margin. Ab- 

 domen elongate in the female; basal tergites dark brown, each 

 segment with a narrow yellowish transverse band shortly before 

 midlength of the segment; sternites obscure yellow, terminal seg- 

 ments uniformly dark brownish black. Ovipositor with the valves 

 chitinized; tergal valves straight, considerably exceeding the sternal 

 valves. 



Habitat. — Peru. 



Holotype, 9 , Yurimaguas, April 10, 1920 (H. S. Parish). 



Paratopotype, 9 , March 23, 1920. 



Tipula hezziana is a strikingly beautiful fly that is probably not 

 a true Tipula but there is no genus known to the writer that can 

 receive it. The very short frontal prolongation of the head, with- 

 out a nasus, is very like Nephrotoma, whereas the venation is some- 

 what suggestive of Brachypremna. The discovery of the male sex 

 will be of exceptional interest. It is with great pleasure that this 

 interesting species is dedicated to my friend, the distinguished 

 Dipterologist, Dr. Mario Bezzi. 



Tipula effeta sp. n. 



General coloration grayish brown, the pleura testaceous; antennae 

 of the male elongated, flagellum black; wings with a brownish tinge, 

 the costal region and the stigma darker; inner pleural appendage 

 of the male hypopygium terminating in two stout spines. 



Male. — Length 12 mm., wing 11.5 mm. 



Female.— hength 12 mm., wing 12.4 mm. 



Frontal prolongation of the head short, obscure yellow, darker 

 brown dorsally; palpi dark brown. Antennae of the male elongated, 

 if bent backward extending to beyond midlength of the second 

 abdominal segment; scapal segments testaceous, flagellum black, 

 the segments elongate, covered with a delicate white pubescence 



