CRUSTACEA OF THE MERGUI ARCHIPELAGO. 23 



are covered with more or less acute granules, a single somewhat 

 larger granule being found at the end of the proximal third of 

 the anterior margin, and another similar granule at the end of 

 the proximal third of the upper margin. The wrist, about twice 

 as long as broad, is everywhere granular, but does not present 

 a tubercle above, as seems to occur in H. albolineata. The larger 

 hand resembles that of the last species. The fingers are about 

 half as long as the palm, which presents a longitudinal groove on 

 its granulated outer surface, close to and parallel with the upper 

 margin, and another similar groove below near the under margin ; 

 these grooves extend from the articulation with the wrist to the 

 fingers. Two similar grooves are found on the equally convex, 

 though almost smooth, inner surface of the palm. The fingers 

 have acute tips which are perfectly close together ; they are longi- 

 tudinally grooved, and the mobile finger is granular on its upper 

 margin, and the index also at the base of its outer surface. The 

 sharp inner edges are somewhat denticulate. The other cheli- 

 pede, which is a little smaller, presents the same characters. 



The ambulatory legs and joints are very similar to those of 

 H. allolineata, as regards their shape and length, but the 

 meropodites are armed on their upper margins with a row of 

 small acute spinules, whereas there is no tooth at the distal 

 end of the upper border. 



Dimensions : — 



millira. 

 Length of the cephalothorax t)| 



Distance between the last antero-lateral teeth .... 9|- 

 Di stance between the external orbital angles .... 5 



Length of the larger chelipede 18 



Length of the larger hand (the fingers included). . 8^ 

 Breadth (height) of the palm at the base of the fingers. 2 



Harrovia albolineata has been recorded from Borneo, Hong- 

 kong, and the Philippine Islands ; H.. tuberculata from Australia 

 (Darnley Island, Torres Strait). All the species of this inter- 

 esting genus are thus inhabitants of the Indian seas. 



