740 ME. W. F. LANCHESTER ON CRUSTACEAN'S [June 19, 



and internally more or less sulcate ; mobile finger with two rows 

 of 3 or 4 tubercles above, enclosing between them a furrow ; tips 

 strongly excavate and white ; inner margins dentate and not quite 

 meeting. Ambulatory legs with upper and under margins densely 

 clothed with hair ; upper margins tuberculate, the tubercles 

 becoming stronger from the merus to the dactyl, under margins 

 granulate. 



Colour variable ; smallest male greenish yellow with a few 

 red-brown patches, the next in size with a much greater amount 

 of red-brown, the largest completely brown; the female has a 

 somewhat mottled appearance of brown and yellow. 



The tubercles of the chelipedes tend to obsolescence in the 

 largest male. Mr. Miers's statement (t. c.) that the distal ends of 

 the frontal lobes are convex seems to be either a mistake or a 

 misprint ; for I have examined the ' Alert ' specimen, and find 

 them, like these, slightly concave when viewed from above ; briefly, 

 they are convex in a vertical, and concave in a horizontal plane. 



Dim. d 57-5x38. <$ 45-5x30-5. tf 36x25. $ 42x28. 



XXIX. Genus Cymo de Haan. 



48. Cymo andreossyi melanodaotyla. 



Cymo melanodactylus, de Haan, Crust. Japon. p. 22 (1839). 



Cymo andreossyi, Miers, ' Alert ' Crust, p. 532 (1884) ; de Man, 

 Mergui Crust, p. 35 (1888); Henderson, Trans. Linn. Soc, Zool. 

 vol. v. p. 363 (1893). 



flab. Singapore : from the reef at low water. A male. Fingers 

 black : black colour extending on to under and lower external 

 surface of baud ; granules on this part small above, absent below ; 

 tips of fingers light brown, not white. 



Dim. 11*5 x 9-5. Breadth taken is greatest breadth. 



XXX. Genus Myomenippe Hilgendorf. 



49. Myomenippe granulosa A. M.-Edw. 



Menippe granulosa, A. M.-Edw. Ann. Soc. Entom. de France, 

 t. vii. p. 275 (1867). 



Myomenippe dupliddens, Hilgendorf, Monatsber. k. Akad. Wiss. 

 Berlin, p. 796 (footnote) (Nov. 1S7S). 



Myomenippe granulosa, de Man, Mergui Crust, p. 40, pi. ii. f. 1 

 (1888), and Zoolog. Jahrb. Bd. viii. p. 525 (1895). 



Hab. Malacca ; littoral. One male example. 



This agrees almost entirely with Dr. de Man's excellent 

 description (t. c.) ; the only notable difference is the presence of 

 numerous, rather thickly-set hairs on the ambulatory legs, especially 

 on the upper margin of the meri ; these would appear, from 

 Dr. de Mau's figure, to be much less numerous in his examples. 



Dim. 38x27-5. 



Distance between ext. orbital angles, 22 mm . 



Length of larger hand, 2925 mm. 



