246 MR. E. J. MIERS ON THE OXYSTOMATOUS CRUSTACEA. 



very obscurely emarginate. Hand slightly granulous in its lower half, the tubercles 

 very strongly marked, ridge in the male divided into three acute tubercles alter- 

 nating with two spines. Ridge upon the outer surface of the mobile finger very 

 finely striated in the greater part of its length, and obscurely beaded towards 

 its distal extremity. Spots upon the carapace pink, more numerous and crowded 

 upon the anterior portion, but not disposed in reticulated lines. Length and 

 breadth about 1^ in. 



Sab. Indian Ocean ; China Seas ; Philippine Islands. 



A specimen from the Philippines has the spots more scattered, and a large pink blotch 

 upon the penultimate and last joints of the second and fifth pair of legs. 



In the female of this species there are two or three conical, acute tubercles and spines 

 upon the external surface of the hand. Ridge of mobile finger obsolete. 



6. Matuta maculata, sp. n. (Plate XL. figs. 3 & 4s.) Carapace distinctly granulated, 



the granules coarser upon the raised parts of the carapace, but the tubercles, both 

 of carapace and posterolateral margin, nearly obsolete. Lateral marginal spine 

 very long and acute ; front obtuse, or but very faintly emarginate. Hand granulous 

 upon its inferior surface, the tubercles upon its upper part distinct, the ridge in the 

 male with five prominences, of which the first, third, and fifth are indistinct tuber- 

 cles, the second and fourth larger, acute. Ridge upon the mobile finger as in the 

 preceding species. Spots upon the carapace small and crowded anteriorly, pos- 

 teriorly larger, scattered, and each in the form of small curved lines and circles. 

 Length and breadth about 1-^- in. 



Sab. Eastern and Chinese Seas ; Panagatan Shoal. 



In the female the tubercles of the ridge upon the hand are nearly as in the male. The 

 ridge of the mobile finger is obsolete. 



7. Mattjta picta. (Plate XL. figs. 5-7.) 



Cancer lunaris, Leach, Zool. Miscell. iii. p. 13, pi. 127. figs. 3-5 (1817), nee Herbst. 

 Matuta planipes, Desm. Consid. Crust, p. 102 (1825), nee Pabricius. 

 M. picta, Hess, Arehivf. Naturg. xxxi. p. 158, pi. vi. fig. 13 (1865). 



Carapace distinctly granulated. Tubercles of the carapace and posterolateral margins 

 strongly marked. Lateral marginal spine of moderate length, directed slightly forward. 

 Pront obtuse and rounded or slightly emarginate. Hand not granulous upon its 

 external surface ; tubercles upon the upper part rounded and obtuse, ridge on 

 external surface divided into four or five lobes, of which the second is an acute 

 spine, the remainder small, obtuse, or truncate. Ridge upon the mobile finger 

 distinctly striated in the greater part of its length, and beaded at its distal extremity. 

 Spots upon the carapace very numerous and minute, often disposed in reticulated 

 lines. Length If in. ; breadth 1\\ in. 



Sab. Ceylon ; Indian Ocean ; Zanzibar ; Mauritius ; Seychelles ; Australian Seas. 



In the single adult female of this species in the collection of the British Museum, the 

 tubercles upon the lower part of the hand are stronger and interspersed with granules. 



