new Sj'ecies of African DijAoptera. 440 



mcsonotum posteriorly, tlic apex of the scutellum, tlic post- 

 scutiUum, two ap|)r()xiniatetl ovate marks on nicsoj)leurae 

 (tlip upper large, the lower minute), the truncation of the 

 median segment laterally, pale yellow. 



All the abdominal tergites Mith apical fascicC widening 

 laterally, those on tergites 2-5 dilating medially, and 

 sternites 1-5 at the extreme apex, pale yellow. Legs pale 

 yellow, exeept the coxae and femora, which are black. 



Mandibles, flagellnm, and tegulse anteriorly ferruginous. 



Wings clear hyaline. 



Clypcus deeply emarginate at apex, broader than long. 

 Head and thorax somewhat coarsely, abdomen more finely, 

 punctured ; truncation of median segment finely longi- 

 tudinally striate. 



Length 7 mm. 



JJab. Patchari (22. iii. 1911) and N'jau (IS.iii. 1911), 

 Gambia ; 3 ? . 



Presented by the Entomological Research Committee 

 (Tropical Africa). This is the first species of Jityiirtia 

 received from south of the Sahara, but it nevertheless 

 strongly resembles the Palrearctic species of the genus, from 

 Avhich it has been found difficult to separate it. 



J. simpsoni can be distinguished from the nearly allied 

 species as follows : — 



A. Surface of truncation of median segment 



usually entirely yellow, occasionally with 

 black pipe-shaped marks, as in type 

 specimen ■. J. escalerce, M. -Waldo. 



B. Surface of truncation of median segment 



black, yellow laterally. 



a. Legs and antennae entirely yellow .... /. manida, Sauss. 



b. Legs not entirely yellow, antennte black 



or ferruginous, 

 fl^. Flagellum black above, mesopleuroe 



coarsely punctured /. oraniensis, Sauss. 



b. Flagellum ferruginous, mesopleuras 



finely punctured J. simpso7ii, sp. n. 



Ehaphidoglossa, S. S. Saunders. 



RaphidogJossa punctata, M.- Waldo. 



A long series of this species, consisting of ten males and 

 twenty-seven females, all collected by S. A. Neave from the 

 Lower Luangwa River, N.E. Rhodesia, with the exception of 

 one male from Lufira River, Katanga, shows it to be distinct 

 from jR. natalensis, Smith. It was suggested (Ann. & Mag. 

 >:at. Hist. (8) V. p. 35, 1910) that R. piwctata, the male 



