708 DR. w. T. CALMAN ON DECAPOD [June 1 5, 



a considerable part of the length of the nierus projects beyond the 

 carapace and its margins are smooth ; the carpus has a bkmt 

 inner angle ; in the larger cheliped the palm is slightly com- 

 pressed, about three-fourths as high as long, its outer surface with 

 longitudinal rows of low, smooth tubercles ; the fingers are short, 

 the immovable one only about one-fourth as long as the lower 

 edge of the palm ; both fingers are furrowed and toothed, with a 

 good deal of hair on the inner edges, not excavated at the tips. 

 The smaller cheliped is more slender, its outer surface nearly 

 smooth. 



The walking legs have the segments rather broad and flattened 

 and beset with longish hairs, especially distally. 



In the male the third, fourth, and fifth abdominal somites are 

 coalesced. 



Colour (in spirit) dark brown, marbled on the posterior part of 

 the carapace and on the limbs with yellowish ; under parts 

 yellowish. The chelipeds have a longitudinal whitish band on 

 the outer surface of the hand. 



In the larger of two ovigerous females the carapace measures 

 only 2*2 mm. in length by 4'2 mm. in breadth, so that the species 

 is one of the smallest of the Brachyura. The eggs are about '35 

 mm. in diameter. 



Family Grapsid^. 



Sesarma murrayi, sp. n. (Plate LXXII, figs. 4, 5.) 



Carapace moderately convex, much broader than long, the four 

 post-frontal lobes not prominent, sub-equal ; except for a deep 

 transverse groove between the gastric and cardiac regions the 

 inter-regional grooves are not defined ; the whole surface is 

 •covered with sharply-marked transverse striae, becoming oblique 

 on the branchial regions and breaking up into rows of minute 

 granules anteriorly. Front more than half the width of the 

 ■carapace, nearly straight as seen from above. Lateral margins 

 strongly convergent posteriorly, without teeth behind the 

 orbital angle. 



Chelipeds a little larger in the male than in the female. The 

 anterior margin of the merus is expanded, finely serrated for the 

 greater part of its length and cut into two or three large teeth 

 distally. The outer surface of the merus and carpus is transversely 

 striate, the stripe microscopically beaded. The outer surface of 

 the hand is nearly smooth except for a fine longitudinal line near 

 the lower border ; the upper surface has a longitudinal line 

 running along its whole length with a number of oblique lines 

 on the inner side. In some specimens a few fainter oblique lines 

 are also pi-esent on the outer side. All these lines, although sharply 

 cut, are very fine and are microscopically beaded. The upper 

 surface of the dactylus is rounded and quite smooth except for a 

 few very fine oblique beaded lines near the base in both sexes. 



