558 Mr. F. Muir on 



one reaching to the base of the periandrium and the other 

 hall: as long; another small curved spine arises from the 

 apex and a fourth a little lower down, which take a complete 

 curve round the periandrium near the apex ; the penis is of 

 medium size, membranous. 



Female. — Length 10, tegmen 12 mm. 



In general build and colour similar to the male. Pygofer 

 wider than long, ovipositor incomplete, sheaths a little longer 

 than pygofer, ovipositor a little shorter. Anal segment 

 small, longer than wide, about half the length of pygofer. 



Holotype male, allotype female, from British East Africa. 

 Described from three males and five females from B.E.A. 

 (>S. L. Hinde^ 1913) ; four males and eleven females from 

 Monkey Bay, Lake Nyassa ( FT. A. Lamborn^ 7. xi. 1915), 

 one female from Umfili River, Mashunaland (^Guy Marshall) ^ 

 and one male from Mozambique (i^. Maw). 



Mnemosyne evansi, sp. n. 



Female. — Length 8_, tegmen 9 mm. 



Oblique carin^e on vertex and median carinse on frons and 

 clypeus distinct ; mesonotum with five distinct carinse. 

 M with five branches, i, 2 and 3, 4, 4a; C'w not touching M. 

 Brown slightly mottled with lighter markings. Tegmina 

 hyaline, slightly yellowish, veins darker brown, very few 

 granules bearing black macrotrichia on membrane ; a ^qw 

 small brown marks at apex of R^ M, and Cu, three small 

 dark marks in costal cell, one in middle of clavus, one at 

 fork of Cu, and one at foik of M. Wings hyaline, veins 

 brown, slightly fuscous along apical margin. 



The female genitalia is similar to M. maculipennis. 



Described from two females from Gold Coast [A. E. Evans, 

 1913). This species diff'ers from M. camerunensis, Dist., in 

 its darker colour and the presence of some granules on the 

 membrane of tegmina, and from M. maculipennis by its 

 smaller size, lighter colour, and by having so few granules 

 on the membrane of tegmina. 



Mnemosyne camerunensis, Dist. 



One specimen without abdomen, which agrees with the 

 type of this species. It is from Oshogbo, South Nigeria 

 {Dr. T. F. G. Mayer). 



