1900.] FROM SINGAPORE \ND MALACCA. 747 



of external maxillipedes with a longitudinal groove near its iuner 

 margin; merus with its external angle much dilated, this dilatation 

 separated off by a broad groove. All the under surface, maxillipedes, 

 abdomen, &c, clothed with pubescence, with longer hairs in places. 

 The antero-lateral teeth are partially hidden by a line of long, 

 thickly placed hairs, arising just below the margin of the carapace. 



Merus of chelipedes with its anterior half visible from beneath 

 the carapace ; upper surface concave and faintly pubescent where 

 it is applied to the carapace, somewhat rounded and more densely 

 pubescent in front. Anterior margin with long hairs, and five 

 teeth ; one of these is placed about the centre of the margin ; 

 behind it are three placed very close together, closer to each other 

 than the first of them is to the spine in the centre of the margin, 

 the first being the same size as that in front, the two behind it 

 being equal and half the size. Posterior margin convex, with 

 long hairs, and a single small tooth at the distal end. Carpus 

 externally pubescent, and costate ; with a strong spine at its 

 inner angle, and a smaller one on its lower outer surface. Hand 

 rather thick, everywhere pubescent, externally with three strong 

 costa?, and above with two, less strong costse, none of them pu- 

 bescent ; the internal costa of the upper surface bears a single, 

 forwardly directed spine at its distal extremity, between the two next 

 costae there is a similar spine at the angle of the joint, and the 

 lowermost costa is continued on to the immobile finger. Each of 

 the fingers presents five costa), all perfectly smooth, except the 

 uppermost one on the dactyl, which is evenly granulate at the 

 base. Inner margins dentate, teeth strong and laciniate ; tips 

 decussate. Ambulatory legs much compressed, dactyls styliform ; 

 under margins of all the joints lined with hairs. 



Colour dull yellow, granules lighter than pubescence; teeth of 

 meri and antero-lateral margins with their bases red and their tips 

 white. 



Dim. 50x34-5. 



Base of cbelipede to tips of fingers .... about 75 mm. 



Length of hand about 16 mm. 



Length of dactyl of hand about 16 mm. 



XXXIX. Genus Goniosoma A. M.-Edw. 

 64. Goniosoma afftne Dana. 



Charybdis affinis, Dana. U.S. Expl. Exped., Crust, pt. i. p. 286, 

 pi. xvii. f. 12 (1852). 



Goniosoma affine, A. M.-Edw. Arch. Mus. t. x. p. 384 (1861); 

 de Man, Mergui Crust, p. 80, pi. v. f. 2 (1888) ; Henderson, 

 Trans. Linn. Soc, Zool. vol. v. p. 374 (1893) ; de Man, Zoolog. 

 Jahrb. Bd. viii. p. 559 (1895). 



Hab. Singapore ; sandy shore. One male example. 



In this individual the merus of the left chelipede has the 

 typical three spines on its anterior border, the most posterior 

 being smaller than the two in front ; on the right side, however, 



