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



Type in the collection of the British Museum (Natural 

 History). 



Chjdonodozus angustifasciatus, sp. n. 



Mesonotal pnescutnni with three dark brownish-black 

 stripes, the median stripe entire ; scntal lubes dark ; legs 

 yellow, the femora and tibiae narrowly tipped with black ; 

 wings yellowish, a narrow dark brown seam along the cord ; 

 abdominal sternites with a continuous median brownish- 

 black stripe. 



Male. — Length 152 mm. ; wing 12'4 mm. ; abdomen 

 alone, 11*5 mm. 



Female. — Length 17*5 mm. ; wing 12'2 mm. 



Generally similar to the other species of the genus herein 

 described, differing as follows : — 



Mesonotal prsescutum with three dark brownish-black 

 stripes, the median stripe entire or only shallowly bifid 

 anteriorly; scntal lobes dark brown; scutellnm yellowish 

 testaceous; postnotnm pale yellowish. JMesopleura largely 

 dark coloured. Legs dull yellow, the tips of the femora and 

 tibise narrowly (1 mm.) black ; tarsi brownish yellow, the 

 distal segments dark brown. Wings dull yellow, the costal 

 region more suffused ; conspicuous brown clouds at the 

 origin of Ms and the tip of R 2 ; a narrow dark brown seam 

 across the wing at the cord, beginning at the stigma, com- 

 pletely encircling cell Is/ M 2 5 a brown cloud at the fork of 

 Mi +2 ; in the allotype the base of the wing and vein M are 

 likewise seamed with brown. Venation : Rs strongly angu- 

 lated at origin, at the bend with an interrupted cross-vein 

 to M as in the genotype and many other species of this 

 genus ; R 2+s very short, only about two-thirds the length of 

 r— m or about equal to m ; inner end of cell 1st M 2 pro- 

 longed and pointed ; cell M x a little longer than its petiole ; 

 basal deflection of Cv x slightly or far beyond mid-length of 

 cell 1st M 2 , in the type and paratype being at nearly three- 

 fourths the length. In the allotype, cell 1st M 2 is smaller 

 and its inner end is not so prolonged. 



Abdominal sternites with the mediau brownish-black band 

 almost continuous from the base of the abdomen to the 

 eighth sternite, scarcely (if at all) interrupted at the incisures ; 

 eighth sternite black basally, the distal half dull yellow. 



Hab. Uganda. 



Holotype, <$ , Mpanga Forest, Toro, altitude 4800 feet. 

 November 13-23, 1911 {S. A. Neuve), B.M. no. 1911. 193. 



Allutopotype, ? . 



Parutujjoiype, J . 



