1908.] Records of the Indian Museum. 215 



is smooth^ their inner border is unarmed but microscopically granu- 

 lar, and one observes also a tuft of hair on the inner side just below 

 the inner margin. Measured horizontally, the length (6-4 mm.) 

 of the chelae (fig. ie) appears equal to that of the carapace, whereas 

 the fingers, measuring one- third that length, appear half as long as 

 the palm ; the palm, 4*4 mm. long and 3 mm. high, is a little longer 

 than high and the chelae are, therefore, twice as long as high. The 

 very finely granulated upper margin of the palm is obtuse, but 

 in Tymp. pusillus the upper margin appears slightly compressed ; 

 the convex, outer surface of the palm is nearly smooth, but the 

 rounded lower border appears again very finely granular, when 

 examined under a lens, and this fine granulation extends nearly to 

 the end of the immobile finger. Like the outer, so also the inner 

 surface of the palm is marked with dark reticulate lines ; on the 

 inner surface these lines are finely granular. The straight, upper 

 margin of the very oblique dactylus is also fimely granular, but the 

 granules are wanting along the middle line ; the outer surface is 

 slightly convex, smooth, somewhat punctate, and the prehensile 

 edge carries eleven or twelve small teeth of equal size along its 

 whole length. In Tymp. pusillus the outer side of the immobile 

 finger is obtusely carinate longitudinall}^, though the granulate 

 carina does not reach to the tip ; in Tymp. stapletoni this carina 

 is hardly discernible and the outer side of the finger is smooth ; the 

 immobile finger which is in a line with the lower margin of the 

 palm is also finely denticulate like the dact3dus. The fingers, which 

 have slightl}^ excavated tips, are, in younger males, comparativel}^ 

 longer. 



The chelipedes of the female that are shorter than the legs, 

 resemble those of Tymp. pusillus ; the chelae are half as long as the 

 length of the carapace and the fingers that have broad- tipped, 

 spoon-shaped extremities are slighth^ longer than the palm ; the 

 immobile finger is carinate longitudinally on its outer side. 



The two middle pairs of ambulator}^ legs are a little longer than 

 the others ; in the adult male the legs of the antepenultimate pair 

 are just twice as long as the distance between the outer orbital 

 angles. Tymp. stapletoni is a species in which the meropodites carry 

 no trace at all of " tympana'' and proves more than any other the 

 unfitness of the name of the genus: The meropodites are moder- 

 ately dilated, so, e.g., are those of the antepenultimate pair little 

 more than twice as long as broad, being 5 mm. long and 2*25 mm. 

 broad in the middle. Their unarmed upper margin is granulated, 

 and on the meropodites of the three first pairs the granules extend 

 almost to the middle of the outer surface, but those of the last pair 

 are nearly smooth ; the lower margin is also finely granulated. 

 The two following joints are less strongly compressed than those of 

 Tymp. pusillus and are smooth, though somewhat punctate ; finally, 

 the terminal joints, which are compressed laterally, are a little 

 shorter than the propodites. 



Eggs very numerous, small, globular, 0'28 — 0*3 mm. broad. 

 Upper surface of the carapace dark blue, chelipedes and legs 



