472 MARINE BIOLOGY OF THE SUDANESE RED SEA. 
Fig. 5. 
Macrophthalmus graeffet. 
a. Right cheliped, ¢ 412: outer surface, setee removed from gape of fingers. 
b. Left cheliped, ¢ 412: inner surface. 
ce. Right cheliped, 9 ov. 414: outer surface. 
d. Left cheliped, 2 ov. 414: inner surface. 
(Each division of the enlarged scale represents 1 mm.) 
63. MacrRoPHTHALMUS DEPRESSUS, Rippell, 1830. See Alcock, 1900, p. 380. 
Macrophthalmus depressus, Nobili, 1906, p. 318. 
Macrophthalmus depressus, Nobili, 1907, p. 155. 
Locality. Station I. B, 1 g§ [418], 1 ¢ [419]. 
Remarks. The female is non-ovigerous, but probably adult, C.]. 10 mm. ; 
the male also is probably adult, C.]. 11 mm. 
Family GRAPSID. 
Genus Mretorocrarsus, H. Milne-Edwards, 1853. 
64, Meropograpsus mEssor (Morskal, 1775). See Alcock, 1900, p. 397. 
Metopograpsus messor, Nobili, 1906, p. 320. 
Metopograpsus thukuhar, Stimpson *, 1907, p. 114, and synonymy. 
Metopograpsus messor, var. frontalis, Miers, 1880, p. 311. 
* Stimpson includes a reference to “ Metopograpsus thukuhar Milne Edwards, Mélanges - 
Carcinologiques, p. 131.” Ido not know the latter publication under the title given, but 
interna] evidence shows that the reference is equivalent to H. Milne-Edwards, 1853, p. 165, 
