396 APPENDIX C. 
Measurements in millimetres: total length of trunk, 11; of man- 
dible, 3.5; of palp, from base of femur, 8.5; of fourth leg, 10; 
widthotliedd, 35, lenetdn, 2.3. 
Locality, Turfa, in Somaliland. 
This species resembles both adantica, SIM.(Ann. Soc. Ent. Fr. 
1879, p. 132) from the Cape Verde Islands, and dalfouri, Poc. 
(Ann. Mag. Nat. Hist. (6) xvi. p. 95) from Socotra in having 
the lower surface of the patella and tibia of the palp spiny. It 
appears, however, to differ from both in having the distal end of 
the femur and the patella of the palp infuscate. 
Rhax smithii; n. sp. 
d Allied to R. ornata, Poc. and R. phillipsit,2 Poc. Head coal 
black with the antero-lateral angles widely flavous; posterior two 
thoracic segments quite pale; abdomen black above, with fourth 
and fifth, and eighth and ninth terga pale, the two former with a 
medium black spot ; mandible rich yellowish red above, black at 
the sides basally as in ornvata, legs of the last three pairs entirely 
pale without trace of spots; palpi and legs of first pair also pale, 
except at the tips, the palpi having the tarsus and the distal two- 
thirds of the protarsus quite black as in orvata, and the first leg 
having the tarsus and distal end of the protarsus also black. The 
maxillary process and trochanter of the palp as well as the front 
edge of the femur slightly infuscate. 
Measurements in millimetres: total length, including mandible, 
40; length of mandible, 14; of head, 6; width of head, Io. 
Two male examples from Aseba in the Boran country, 3000 
ft. altitude. 
Taken at the same time and at the same place as the males 
described above is a young 2? (19 mm. long), which differs con- 
siderably from them in coloring. Thus the coxe of the palpi 
and of the first, second, and third legs are strongly infuscate; the 
palpus has the lower edge of the femur black, and a wide black 
band round the tibia; there is also a black spot on the lower sur- 
face of the femur of the first leg, and another upon that of the 
third. The young of this species thus approaches RX. ovata more 
than the adult does. 
A fourth specimen, an adult 2 without special locality, resem- 
1 Ann. Mag. Nat. Hist. (6), xvi. p. 93, pl. iv. fig. 2, 1895. From Mombasa. 
2 Ann. Mag. Nat. Hist. (6), xviii. p. 185, 1896. From North Somaliland. 
