1900.] PROM SINGAPORE AND MALACCA. 751 



half the breadth of those in front, is also slightly more prominent; 

 the 4th, very small and tuberculiform, lies close behind the 3rd : all 

 are granulated. 



In the larger individuals, the pubescence that covers both palms 

 externally in the smaller tends to disappear from below upwards 

 in the right palm ; leaving the upper margin, in the largest example, 

 and the base of the palm still thickly covered, while the rest of the 

 surface is naked, smooth, and of a white colour. In the last men- 

 tioned example, also, the space between the bases of the finger of 

 the left chela has lost its hairv covering. 



Dim. 6 10-5x7-5. 6 7-75x6-25. 6 7'5x6. $ 6-25x5. 



Length taken from base of rostrum to middle of posterior 

 border. 



70 a. Caecinoplax subinteger hirsutior, var. nov. 



Hab. Singapore ; littoral. A male, which has lost its right 

 chelipede. 



This variety shows a much greater development of hair than the 

 preceding species. The front has a fringe of long silky hairs, 

 which spring from a line connecting the external angles of the 

 front : and similar hairs are seen thickly placed on the chelipede 

 and legs, more especially on the anterior and superior faces of the 

 carpo- pro- and dactylopodites : the meri are relatively smooth. 

 In the left chelipede the hairs extend to the tips of the fingers but 

 not on them : these tips are brown, the rest of the fingers white, 

 as seen through the less dense covering of hair. I may add that 

 the 2nd of the four antero-lateral teeth (orbital angle included) is 

 less flattened and more prominent than in C. subinteger. 



This variety is well-marked and the differences may be specific 

 — e. g., the denser hairiness, the somewhat different 2nd antero- 

 lateral tooth, and the different coloration of the fingers ; but it is 

 difficult to form a certain opinion from a single individual, in which, 

 moreover, a chelipede is wanting. 



Dim. 10*75 x 8. Length taken from base of rostrum to middle 

 of posterior border. 



XLIV. Genus Ceratoplax Stimpson. 



71. Ceratoplax l^evis Miers. 



Ceratoplax ? Icevis, Miers, ' Alert ' Crust, p. 244, pi. xxv. fig. C 

 (1884). 



Hab. Singapore; 2| fms. One male specimen. 



Dim. 6-5 x 4-75. Length taken from base of rostrum to middle 

 of posterior border. 



XLV. Genus Ootpode Fabr. 



72. Ooypode ceratophthalma Pallas. 



Cancer ceratophthahnus, Pallas, Spicil. Zool. fasc. ix. p. 83, pi. v. 

 f. 17 (1772), 



49* 



