532 MR. E. I. POCOCK ON THE 



median length 10"5, width 17, distance between eyes 6. Chela : 

 femur, length above 9'5, height 3"5, length of longest spine 3"5 ; 

 tibia, length 13'5, width 4*2, length of longest spine 5 ; length of 

 tarsus 6, of digit 5"8. Legs: femur of 1st 28*5, of 2nd 21, of 

 3rd 21, of 4th 17-5 ; tibia of 2nd 21, of 3rd 23-5, of 4th 205. 



Locality. St. Vincent {H. H. SmitJi),ma,nj examples ; Grrenada 

 (H. H. Smith), one young specimen; Santa Lucia (G. A. 

 Bamage), three adult specimens. 



Most of the examples from St. Vincent were found under the 

 bark of a stump, in August, at an altitude of 150 ft. ; two more, 

 however, both young, were discovered in March under a stone 

 at an altitude of 1000 ft., while a single young example from 

 Grrenada was obtained under a stone at the sea-level. 



The series from St. Vincent shows some interesting structural 

 variations. The above description is taken from the largest 

 male that was least fractured. Another specimen, however, also 

 a male, which was considerably damaged about the limbs, is a 

 good deal larger, measuring 34 mm. in length, with the carapace 

 19 mm. wide. In other respects, however, so far as can be told, 

 this example does not differ from the type ; nor indeed do three 

 other males, which have the carapace respectively 16, 15, and 13"5 

 mm. in width, except that they show that the second tibial of the 

 4th leg may be only about half the length of the third and the 

 two together not longer than the protarsus, while two young 

 m.ales with the carapace 9"5 and 9 mm. wide have the said pro- 

 tarsus slightly longer than the said tibials, the chela shorter, and 

 the distance between the eyes slightly less. 



An adult female, with egg-sac, from St. Vincent, measuring 

 24 mm. long, with the carapace 14 mm. wide, has the chelae and 

 legs shorter than in the adult males, the femur of the chela being 

 greater than the distance between the eyes by about one quarter 

 of its length. The segments of the legs give the following 

 measurements : — femur of 1st 21, of 2nd 15, of 3rd 15-8, of 

 4th 13 ; tibia of 2nd and 4th 14-5, of 3rd 16. These show that 

 the femur of the 4th is less than the width of the carapace, 

 instead of greater, as in the males. 



Three adult examples from Santa Lucia, which appear to be 

 specifically identical with the specimens from St. Vincent, are of 

 interest, inasmuch as the female, which measures 26 mm., with 

 the carapace almost 16 in width, has the chelae and legs of the 

 same length as in the males from St. Vincent, whereas the 



