43 



Conchcpcetes andamaiiirm, Alcock. Plate III., fig. 17, 



Conchrj'cetes nndamanicus, Alcock, Journ. Asiatic Soc. Bengal, LXVIII., pt, 2, 1899, p. 152, 



As to the validity of this species, which is founded on three very small 

 specimens, I am by no means sure. 



It differs from adults of C. arfiflciosus in the following particulars : — 

 The carapace is more depressed and a little more elongate. Though the 

 front is cut into 3 teeth the lateral ones alone are large and conspicuous, the 

 median one being minute and invisible in a dorsal view. There is no spine or 

 tooth on the upper border of the orbit. The antero-lateral borders though 

 granular are thin and overhanging and have no traces of spines or teeth. The 

 subhepatic regions are granular, but are not bounded by distinct rows of 

 granules. 



Instead of two blunt tubei-cles behind the finger-joint of the chelipeds there 

 is a single large subacute tubercle. 



In the largest specimen the carapace is 7"5 millim. long and 7 raillim. 

 broad. 



2859 



-= — . Port Blair, Aiidnmnns. G. H. Booley. 



This species also roofs itself in with a valve of a dead Lamellibranch. 



Dromia, Fabr. 



Dromia, Fabricins, Ent. Syst. Suppl., p. 359. Latreille (55, 56 & 57), Leach (60), Riaso (89 & 90), Desmarest 

 (28), n. Milne Edwards (79), Lamarck (54), De Haan (23), Dana (21), Stimpsoa (99), Henderson (42), Ortmann 

 (84), Alcock (3). 



For references see J. A. S. B., LXVIII., pt. 2, 1899, p. 136. 



All parts except the tips of the fingers and of the dactyli are, generally, 

 tomentose. 



" Carapace not elongate in the adult, strongly convex or subglobose. 



Front cut into tlu'ee teeth, of which the middle one is on a lower plane than 

 the others and is often so much smaller than them and so much deflexed as to be 

 hardly visible from a dorsal view. 



Palate well delimited from the epistome : efferent branchial channels well 

 defined, but not always bounded by distinct and unbroken ridges. 



The chelipeds may have some of the joints nodose, but the ambulatory leo-s 

 are smooth. 



None of the legs have tlie merus dilated. The last two pair of legs are 

 distinctly subcheliform, the spine at the end of the propodite against which the 

 dactylus closes being well developed. 



The sternal grooves of the female do not meet, and they end opposite the 

 bases of the 1st pair of true (monodactylous) ambulatory legs. 



