382 Carcinological Fauna of India. 



brancliial groove faint: the second fcoofcli of the latei'al boi'der is a little 

 more px'oraiueut than the first. Front about tioo-ninths the breadth of 

 the carapace, square cut, longitudinally grooved, but not bilobed. 

 Orbits slightly sinuous, hardly oblique : eyestalks little cui'ved, stoutish, 

 not quite reaching end of orbit. In the male the lower border of the 

 orbit is peculiar : it is finely denticulate at its internal extremity and 

 has a small lobule at its outer angle, and in between these it has the 

 form of a prominent deflexed somewhat triangular lobe. In the female 

 the lower border of the orbit is finely crenulate throughout. The 

 external maxillipeds do not quite meet across the buccal cavern, and 

 the suture between their ischium and merus is a little oblique. 



All three borders of the arm are serrated, and the inner angle of 

 the wiist and upper border of the arm are very finely denticulated. 

 There is a stiong " musical crest " obliquely parallel with the inner 

 border of the arm and in the middle third of that border. Palm longer 

 than the arm, its inner surface is hairy and carries a spine near the 

 carpal end about midway between the upper and lower borders. The 

 fingers are consideiably less than two-thirds the length of the palm : 

 there is a molariform tooth at the base of the dactylus and a larger 

 slanting one on the immobile finger. 



The upper surface of the legs, especially in the case of the third 

 pair, is hairy. 



In the Indian Museum are 4 specimens from Mergui and Akyab : 

 the carapace of the largest specimen is 10 millim. long and 14 millini. 

 broad. 



75. Macrophthalmns tomentosus, Eyd. and Soul. 



Macrophthalmus tomentosus, Eydoux and Souleyet, Zool. Voy, Bonite, I. 

 p. 243, pi. iii. fig. 8, (1841) : Milne Edwards, Ann. Sci. Nat., Zool., (3) XYlFI. 1852, 

 p. 159 : A. Milne Edwards, Noav. Arcliiv. du Mus. IX. 1873, p. 279 : de Man, Jourii. 

 Linn. Soo„ Zool., XXII. 1887-88, p. 122. 



Carapace studded with very fine granules : its length is about two- 

 thirds its greatest breadth, ichicJi is behind the middle of the lateral 

 border, the lateral borders being decidedly divergent posteriorly. On either 

 epibianchial region, behind the branchial groove, are two finely beaded 

 obliquely-longitudinal lines. The fii\st two teeth of the lateral borders 

 are square-cut. 



Front, in its narrowest part, about one-eleventh the greatest 

 breadth of the carapace ; though longitudinally grooved it is not bilobed. 



Orbits hardly sinuous, not oblique; their upper border micx'oscopi- 

 cally beaded, their lower border finely crenulate. The eyestalks are 

 hardly euryed, and the eyes do not peach to the end of the orbits. 



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