352 Dr. 0. P*. Alexander on African Crane-flies 



Presented by the Imperial Bureau of Entomology, 

 1914.142. 



Type in the collection of the British Museum (Natural 

 History). 



This beautiful Pseudolimnophila is even closer to P. 

 rhodesue (Alexander) of Rhodesia than it is to P. cincfi- 

 femur ; from the former it differs in the coloration of the 

 mesonotum ; the wing-pattern is much heavier, the spots 

 along most of the veins being confluent with one another 

 across the intervening cells ; in the costal cell an almost 

 regular series of about fifteen brown dots ; the venational 

 details are slightly different, especially in the length of the 

 veins beyond cell 1st J/ 2 . The colour of the legs in 

 P. rhodesia is unknown. These three species form a rather 

 isolated group of the genus distinguished by the beautifully 

 patterned wings and the very small cell 1st M 2 . 



Tribe Limnophilini. 

 Genus Limnophila, Macquart. 



Limnophila distigma, sp. n. 



Head grey ; mesonotal praescutum yellowish grey with 

 four darker stripes ; pleura with a narrow brown longi- 

 tudinal stripe ; mesostemum dark brown ; wings pale grey, 

 sparsely spotted with dark brown at the forks and ends of 

 the veins ; r at the tip of R x ; basal deflection of Cu x at mid- 

 length of cell 1*/ A/ 2 . 



Sex ? — Wing 8*7 m m . 



Rostrum and palpi dark brown. Antennae with the basal 

 segment yellow ; remainder of the antennae broken. Head 

 grey ; eyes large, the vertex between them narrow. 



Pronotum pale grey ; prosternum distinct, separating the 

 fore coxae, appearing as a narrow, dark-coloured plate. 

 Mesonotal praescutum pale yellowish grey with four darker 

 stripes, the long intermediate pair narrowly separated by 

 an indistinct, capillary, pale line ; lateral stripes less distinct ; 

 scutum and scutellum pale yellowish grey, the lobes of the 

 former indistinctly marked with brown ; postnotum clear 

 light grey. Pleura obscure brownish yellow with a rather 

 narrow, interrupted, dark brown stripe extending from the 

 propleura across the mesepisternum, ending as a rounded 

 spot on the mesepimeron ; a spot on the mesepisternum, 

 ventrad of the stripe ; mesosternum dark brown. Halteres 

 dull yellow, the knobs brown. Legs with the coxae pale 



