Carcinological Fauna of India. 159 



Matuta distinguenda, Hoffmann in Pollen and Van Dam's Fauna Madagasc, 

 Crust, p. 27, pi. vi. figs. 49-52, pi. vii. figs. 53-57 (1874) : Lenz and Richters, Abh. 

 Senk. Ges. XII. 1881, p. 425. 



Matuta obtusifrons, Miers, Trans. Linn. Soc. Zool. (2) I. 1875-79 (1876), p. 247, 

 pi. xl. figs. 8 and 9, and Ann. Mag. Nat. Hist. (5) V. 1880, p. 316. 



? Matuta granulosa, Miers, Trans. Linn. Soo. Zool. (2) I. 1875-79 (1876) p. 215, 

 pi. xxxix. figs. 8, 9, and ' Challenger ' Brachyura, p. 295 : de Man, Notes Leyden 

 Mus. III. 1881, p. 114: Haswell, Cat. Austral. Crust, p. 134. 



Matuta victor, varr. 5 and 6, and ? 4, Ortmann, Zool. Jahrbucher, Syst., &c, VI., 

 1891-92, pp. 572, 573. 



Carapace coarsely granular in the epibranchial, post-gastric and 

 cardiac regions. All six tubercles are almost always very distinct, both 

 in the young and adult. 



The antero-lateral borders are ci'enulate, the last three crenulations 

 forming three large blunt teeth. The posterior and pohtero-lateral bor- 

 ders form a continuous granular slightly-elevated ridge, which stops at 

 a sharply-defined tubercle, or tooth, situated considerably in rear of the 

 lateral epibranchinl spine. The length of this lateral spine (measured 

 along its front border) is always less than one-fourtb the breadth of 

 the carapace. 



Front just equal in width to the orbit : rostrum either entire, or 

 faintly emarginafe. 



Hand with the upper border, or crest, trilobed, and the lower 

 border dentate as far as the base of the immobile finger. Below the 

 crest are two obliquely-longitudinal rows of tubercles, the lower some- 

 what broken and irregular. Below these, the hand is traversed longi- 

 tudinally, as far as the finger-cleft, by a row of 5 teeth, of which the 

 2nd (counting from the proximal end) is enlarged and acute , and the 

 4th is also somewhat enlarged and acute, but less so in the adult male 

 than in the female and young male. The surface of the hand, below 

 the ridge, is roughened, and is traversed — from the angle where the 

 hand touches the arm, to the immobile finger — by a row of molariform. 

 tubercles, which is continued to the tip of the immobile finger as a rido-o 

 and furrow : the first of these tubercles, at the angle where the hand 

 touches the arm, is enlarged and acute. The dactylus in the female and 

 young male is convex and smooth : in the adult male it is longitudinally 

 traversed by a shai^p ridge, which becomes milled at the distal end. 



The carpus of the penultimate pair of legs is full and even inflated, 

 and shows more or less distinct traces of a second dorsal longitudinal 



o 



carina. 



Colour in spirit bright yellow, with a fine close discontinuous 

 reticulum of red markings, which give to the whole, when viewed from 

 a distance, a rich chestnut- brown appearance. The legs are also of the 



164 



