12 Dr. 0. P. Alexander on African Crane-flies 



of cells R 3 and R- , all but a spot at the base of cell 2nd M 2 , 

 all of M 3 , all of Cu x , except a large subbasal spot, and the 

 margins of the remaining cells of the wing ; veins dark 

 brownish black. Venation: Sc long, Sc x ending a short 

 distance before the fork of Rs, Sc 2 at the tip of /$c : ; Rs 

 angulated and slightly spurred at origin ; r on the tip of R x 

 and long, nearly equal to the basal deflection of Cu x ; basal 

 deflection of R i+5 nearly three times the length of r-m ; cell 

 1st M 2 long, narrow, a little widened distally, much longer 

 than vein Cu x beyond it; basal deflection of Cu x just before 

 the fork of M. 



Abdominal tergite one light orange-yellow ; two black, 

 except at the extreme base ; three orange, the caudal margin 

 indistinctly darkened ; four orange ; five with the basal half 

 orange, the caudal half and all of segments six and seven 

 black ; eight and nine and the hypopygium orange; sternites 

 orange, segments three and the subterminal ring of the 

 tergites occurring on the sternites also, black. 



Hob. Southern Nigeria. 



Holotype, $ , Ilesha (Capt. L. E. H. Humfrey). 



Presented by the Entomological Research Committee, 

 1911.422. 



This handsome species is closely allied to L. congoensis } 

 Alexander (Belgian Congo), and several other species 

 described at this time. It is with pleasure that the fly is 

 dedicated to Captain Humfrey as an appreciation of the 

 labour involved in collecting numerous Tipulidse in Southern 

 Nigeria. 



Limnobia yrahami, sp. n. 



Head dusky black, a narrow median line and the margins 

 of the eyes light grey ; mesonotum brownish black, only the 

 narrow humeral regions of the prsescutum yellowish; meso- 

 pleura and mesosternum with a conspicuous transverse dark 

 brown area; legs black; abdomen with segments one, four, 

 eight, and nine yellow, two, three, five, six, and seven black. 



Male. — Length about 9'5 mm.; wing 10'3 mm. 



Rostrum and palpi dark brownish black. Antennte with 

 the first scapal segment dark brown, the second segment 

 dark brown basally, the tip paler; flagellar segments 

 elongate-cylindrical, the verticils longer than the segments. 

 Head with the vertex blackish ; the median area and the 

 narrow margins adjoining the eyes light grey ; the dusky 

 black areas of the vertex and occiput bear numerous black 



