214 Mr. F. W. Edwards' revision of 



voins dark, except the costa, R,, R 2 + 3 ^"d An, which are yellowish. 

 There is a slight darkening of tlie membrane at the extreme base 

 of the wing in the cell Ax. Haltores yellowish, the knob somewhat 

 darkened. 



Type in the British Museum. 



Lac. Mashon ALAND : Salisbury, March 1900 {G. A. K. 

 Marshall), 1 $. 



6. S. lineaticeps, sp. n. 

 Figs. 3, 4, 14 and 50. 



Head blackish, with a narrow median longitudinal yellowish 

 line. Palpi black, the joints somewhat lighter at the base. An- 

 tennae with the two basal joints entirely black, the flagellum brown- 

 ish, with indications of a darker ring on each joint. Thorax mainly 

 black dorsally, with light grey patches as in the figure ; pleurae 

 entirely yellowish. Abdomen of male yellowish-brown, with a 

 rather large daik brown patch at the base of each segment, and 

 another t<jwards the hind margin ; the actual hind margin blackish. 

 In the female the abdomen is darker and all the markings are 

 obscured. Legs as in S. tuarshalli, but in the female there is just a 

 trace of the yellow ground-colour at the tips of the fore and mid 

 femora. Witigs mucli as in S. marshalli, but Ax is evenly curved 

 to the hind margin, and there is no dark patch in the cell Ax. 



Type in the British Museum, presented by the Imperial 

 Bureau of Entomology. 



Lac. British East Africa : Mumias district, N. Kavi- 

 rondo, 3. ix. 1911 (C. W. Woodhouse), 1 (^ 1 ? taken in 

 coitu in tent. 



7. S. mahensis, Edw. (1912). 



This species is not figured, as the genitalia of both sexes 

 are identical in structure with those of S. annulipes, End. 

 The difference of colour between the two forms is, however, 

 very striking. In S. mahensis the mesonotum is mainly 

 black, and the rings on the legs are black and much broader 

 than in S. annulipes, though the tips of all the femora 

 remain yellow. The angle of Ax always carries a distinct 

 spur, though this varies in length. Otherwise there is no 

 noticeable variation, even in colour. 



Type in the British Museum. 



Lac. Seychelles Is. : Mahe (//. Scott), 10 ^, 2 ?. 



