92 Mr. R. I. Pocock on some 
anterior nine tergal plates of abdomen yellowish white; the 
sides of the abdominal segments and the entire anal segment 
black, lower surface of abdomen yellow in front, black poste- 
riorly ; palpi and legs clear reddish yellow, with the coxa, 
trochanter, and protarsus and tarsus of palp black, and the 
tarsus and distal end of protarsus of legs of first pair also 
black ; edge of the malleoli blackish. 
Ocular tubercle oval, flattish, without accessory sete; the 
surface between the eyes flat, not sulcate, and about equalling 
an eye’s diameter in width. J/andzbles with the terminal fangs 
only moderately long; the anterior denticle on the lower jaw 
very minute. Protarsus of palp and of first leg normally 
spined; no spines on tarsal segment of palp; tibia of palp 
longer than protarsus and tarsus; tarsus of fourth segment 
provided only with setiform spines. Cove marked with a few 
spines. 
?. Larger than male, with abdomen enormously distended, 
and differing in the usual sexual characters. 
Measurements in millimetres.— g. Total length of trunk 
28°5, of abdomen 17, of head 5, of mandible 11°8; width of 
head 8°5; length of palp 18:5, of fourth leg 26:5. 
@. Total length 63, of abdomen 50, of head 6:8; width 
of head 11°5; length of mandible 15:5, of palp 22, of fourth 
leg 27:5. 
Loc. Gambia. Two examples (¢ ?), collected and pre- 
sented by Sir A. Moloney in 1885. 
The locality of this species is of peculiar interest, inasmuch 
as it is, so far as is at present known, the most southern limit 
for the genus hax on the west coast of Africa. The species 
itself seems to be most nearly related to the Nubian 2. melano- 
cephala of Simon, which is unknown to me. The following 
difterential characters, however, may be recognized from 
Simon’s description:—In &. melanocephala the thoracic 
segments are mesially brown, and the protarsus of the first 
leg is entirely black; moreover, the ocular tubercle is said to 
be nearly round and mesially striate. In &. miranda the 
thoracic segments are pale, the protarsus of the first leg 
blackish only distally; the ocular tubercle is oval and not 
striate. 
It also closely resembles in colour the Transcaspian 
kh. Eylandti, of which the British Museum has two ex- 
amples; but in &- Ly/andti the median dorsal pale stripe on 
the abdomen narrows anteriorly upon the first tergite, is not 
directly continuous with the white of the thoracic segments, 
expands towards the posterior end, and extends on to the 
tenth or anal segment; whereas in &, miranda this stripe is 
