Solifuge in the British Museum. 89 
teeth between the second and third large teeth of the upper 
jaw. Palpi slender, longish; tibia slightly shorter than the 
tarsus and protarsus -together, the latter thickly clothed 
beneath with longish hairs. 
Legs longish (cf. measurements). 
Genital operculum with the posterior borders of its two 
halves lightly convex, the inner angle not thickened and 
produced. 
Measurements in millimetres.—Total length of trunk 54, of 
nead 8°5; width of head 11:5, of ocular tubercle 2°5; length 
of mandible 18; tibia of palp 14:5, its protarsus and tarsus 
15; tibia of fourth leg 14, protarsus 12. 
Loc. Congo. 
In the black colouring of its legs, palpi, mandibles, and 
head-plate this species resembles S. nigrescens ; it appears, 
however, to differ in having the abdomen pale and the head 
much narrower as compared with the length of the palpi and 
legs. : 
“The type of the species is the example from the Congo 
referred by Mr. Butler to S. lethalis of Koch. 
Solpuga hostilis (White). (Pl. IV. fig. 7.) 
Solpuga hostilis (White), Appendix to Methuen’s ‘ Life in the Wilder- 
ness,’ p. 317, pl. ii. fig. 5 (1846). 
This species, of which there are two (g ?) typical ex- 
amples in the British Museum, seems to me to be identical 
with those that Simon has described as S. set¢fera of Olivier. 
But since there is very little evidence that it is setifera of 
Olivier, I prefer to retain the name that White applied to it. 
In the male the upper jaw of the mandible is slightly 
depressed proximally, with the apex a little upturned ; on its 
lower edge there are two small equal teeth a little behind the 
apex ; these teeth are followed by a concave toothless area, 
behind which come the normal double series, but the first 
tooth of the inner series is enormously long and conical; on 
the lower jaw the three teeth are small, erect, sharp, and 
situated far behind the middle of the blade, the distal half of 
which is very long and curved; the flagellum has a high 
basal piece, and the slender portion runs forwards nearly to 
the apex of the fang before curving sharply backwards to 
terminate at a point beyond the ocular tubercle on the cara- 
pace. 
Simon’s figure differs from the structure here described in 
showing the two distal teeth on the upper jaw larger and the 
