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248 BOMBAY NATURAL HISTORY SOCIETY. 
This species is allied to the next, I. varius, from which however 
it varies in some important particulars, In I. atomarius the fifth 
lower abdominal segment is entirely fulvous yellow, with only one 
black spot near the anterior edge; the upper part of the first four 
caudal segments, as far as the second keel on each side, is clear 
fulvous yellow without any marks whatever; the cubital joint of the 
cheliceres has merely a small dot of black at each end on the upper 
side, and the radial joint is marked with black only on the terminal 
third of its length. It is also a much smaller species than J. varius. 
The male differs from the female in having the body shorter, the tail 
proportionally longer, and in having the fixed finger of the hand 
strongly sinuated on the basal half of its length. 
4. I. varius, C, Koch. 
An extremely common species widely distributed. TI have taken 
specimens in all parts of Burma, from Tenasserinm up to Mandalay, 
It varies greatly in colour from bright rufous to dull brown, but I 
cannot find that these variations are correlated with climate, speci- 
mens from the dry region of Mandalay being fully as brightly 
coloured as others from Tenasserim, 
6 Length of body, °8 in.; of tail, 1:3; of cheliceres, +95 
fo) i i ay a pel 2g "B85 
The male is smaller than the female, with much longer (propor- 
tionally) tail and cheliceres, and the hand igs much larger with a 
strongly sinuated fixed finger. The coloration of the sexes is the 
same, 
5. I. basilicus, Karsch. 
Appears to be rare in collections, but probably common enough 
in Ceylon, If correctly described, this species has the curious 
peculiarity of having the hands of the same length or longer than 
the fingers, a point of structure not possessed by any other known 
species, 
6. I. phipsoni, N. Sp., figs. 1, 2. 
This species, the largest of the genus, appears to be common in 
Tenasserim, whence I have received numerous specimens, 
Judging from the description, this species is allied to I. mMessor, 
FE. Simon, from Java, but it is much larger, and differs moreover in 
the coloration of the legs and other points, 
? General colour fulvous yellow above; the cephalo-thorax nearly 
black round the central eyes and in front of them up to the anterior 
margins, the whole thickly and coarsely granulated, with the excep- 
