182 



well as Ihe dorsnl and vc-niral margins more moderately convex in similarity to 

 Ch. Birmanicus Thor. The hand, which is distinctly longer than the tihia and 

 about 1-35 broader than the tibia, is 1-6 longer than broad, 1-4 longer than deep 

 and 1-3 longer than the finger; the whole chela is 26 longer than broad; the 

 lateral as well as the dorsal and ventral outlines seem to be less abruptly convex. 



Colour. — The colour is much lighter; the two proximal joints of palps 

 are light brown, while the tibia and hand are reddish brown; the céphalothorax 

 and tergites are pale brown. 



Measurements. — Céphalothorax 1120 (0924); abdomen 3-64() (1-680) mm. 



Palps: trochanter 0575 (0-364); femur 0-952 (0420); tibia 0970 (0476); hand 

 1-008 (0-644), depth 0-738; finger 0784 mm. 



Material. — I have examined both a male and female of this species, both 

 labelled "?Sundaislands?'" but not mounted together. 



Remarks. — It is only with doubts, that a have referred the described 

 male and female to the same species, for there is a remarkable difference in the 

 convexities of the tibia of the palps, which has nothing corresponding in the male 

 and female of Ch. Birmanicus Thor. 



27. Chelifer Nicobarensis n. sp. 

 (PI. IV, figs. 6a-b; fig. 17, p. 183). 



J". Indistinct ocular spots; céphalothorax not broader hehinii than in nnddle, 

 distinctly longer than broad, with prominent, median transuerse stripe, udiich is curved 

 distinctly backwards in the middle; skin without granules and with not quite simple 

 hairs. Abdomen not very long and slender, with longitudinally undivided, minutely 

 reticulate tergites, which have 6 hairs in front of marginal row ; tip of tlie abdomen 

 with "tactile" hairs (?); genital area of "Birmanicus" type. Distinctly granular palps 

 longer than body: the trochanter distinctly longer than broad, with posterior margin 

 abruptly convex and with dorsal surface produced into a pyramidal, obtusely pointed 

 tubercle; femur about 2-1 longer than broad, as long as but distinctly narrower than 

 the tibia, which lias lateral outlines cdmost circular and basal posterior elevation well 

 marked. The hand is PI broader than tibia, P6 longer than broad, lA longer timn 

 deep and 1-5 longer than fingers. "Tactile" hair of the fourth tarsus is placed at the 

 base; the tibia of the first pair is a little longer than the tarsus, whicli is IS longer 

 than deep. 



Céphalothorax. — The ocular spots are very indistinct. The céphalothorax 

 is distinctly longer than it is broad in the middle, where it is broader than at the 

 hindmost margin; the outline is laterally moderately convex, most distinctly in 

 front, where it has a direction forwards and inwards to establish a well developed 

 cucullus. In the middle a distinct strongly backwards curved transverse stripe is 

 found; the integument is almost smooth, but only polished in the first thoracic 

 tergite. Hairs probably moderately long with a few distal teeth. 



Abdomen. — The abdomen, which is about twice as long as broad, is of a 



