2 Dr. C. P. Alexander on African Crane-flies 



Family Tipulidae. 



Subfamily Limnobiinje. 



Tribe Limnobiini. 



Genus Dicranomyia, Stephens. 



Dicranomyia scutellum-nigrum, sp. n. 



Head dark ; mesonotal prsescutum and postnotum yellow- 

 ish, the scutal lobes and scutellum black ; pleura yellow with 

 a transverse dark brown stripe on the mesepisternum ; wings 

 long and narrow, yellow, with about four dark brown cross- 

 bands, the second at the level of the sector, the third at the 

 cord, the last at the wing-tip ; Sc long, cell 1st M 2 closed. 



Female. — Length about 8*5 mm.; wing about 9 mm.; 

 middle leg, femur, 8*5 mm. ; tibia, 89 mm. 



Rostrum and palpi brownish yellow, the latter a little the 

 darker, short. Antennae with the scapal segments obscure 

 yellowish, the second segment dark brown at the tip ; 

 flagellum rather elongate, dark brown, each segment with a 

 very long, secund verticil. Head dark brown. 



Mesonotal praescutum shiny yellowish red without darker 

 markings ; scutal lobes brownish black, the median area and 

 base of the scutellum obscure yellow ; remainder of the 

 scutellum blackish; postnotum yellowish. Pleura shiny 

 yellowish with a single, rather narrow, ti-ansverse, dark 

 brown stripe on the mesepisternum, continued ventrad on to 

 the dorsal margin of the mesosternum, this line extending 

 from the concolorous scutal lobes, passing immediately before 

 the wing-root. Halteres yellow, the knobs dark brown. 

 Legs with the coxae and trochanters yellow ; femora brown, 

 pale at the base, passing into dark brown at the apex ; tibiae 

 brown, the tips dark brown ; tarsi dark brown j legs rela- 

 tively long and slender ; claws broken. Wings long and 

 relatively narrow, light yellowish, with about four brown 

 cross-bands ; these markings are dark brown in the costal 

 region but fade into grey in the anal cells ; these bands are 

 distributed as follows : the first band lies just beyond the 

 yellowish wing-base and completely traverses the wing, 

 occupying the middle third of cell 2nd A ; the second band 

 occupies the level of the origin of Us, appearing as a large, 

 dark brown area at this origin, continued caudad across the 

 wing as a much paler, grey cloud ; the third band occupies 

 the cord and completely traverses the wing, paler in the 

 caudal cells ; a large rounded brown spot at the tip of Ri ; 



