CBITSTACEA OF THE MEEGTJI AECHIPELAGO. 43 



I am indebted to Dr. Hilgendorf for the following information 

 regarding Cancer Panope, Herbst, which really belongs to the 

 genus Menippe, the orbits not being closed internally. The typical 

 specimen of Herbst's Gancer Fanope is 19 j millim. broad and 

 14| millim. long. In this species the granules, which are found 

 on the middle of the outer surface of the hands, are larger than 

 those of the upper and under margins of the palm, as they 

 have a diameter of | millim., whereas in Myomenippe granulosa, 

 A. M.-Edw., the largest granules are found on the upper margin. 

 In Menippe Fanope the front is not divided into six teeth, and 

 the postero-lateral regions of the cephalothorax are nearly quite 

 smooth behind the last antero-lateral tooth, whereas they are dis- 

 tinctly granular in Myomenippe granulosa^ A. M.-Edw. The lobes 

 on the upper surface of the carapace are less distinct in Menippe 

 Fanope, being even less developed than in Herbst's figure. 

 The course or direction of the last antero-lateral tooth and the 

 form of the posterior margin of the cephalothorax are also some- 

 what dififerent in both species. 



Genus Euetcarcinus, Alpli. M.-JEdw. 



There can be little doubt that the small crustacean described 

 by Alph. Milne-Edwards as a second representative of his genus 

 Filumnopeus must be referred to Eurycarcinus. Filumnopeus 

 maculattis, indeed, perfectly agrees, in its outer appearance and 

 in its essential characters, with the true representatives of Eury- 

 carcinus, viz. E. natalensis, Krauss, E. Grandidieri, A. M.-Edw., 

 E. orientalis, A. M.-Edw., and E. integrifrons, d. M.*, so that 

 there is no reason to refer it to a distinct genus. 



The small group of Crustaceans which bears the name o^ Eu- 

 rycarcinus is, in my opinion, a very natural one. It belongs 

 to those forms the palate of which is more or less distinctly 

 divided by a ridge defining the margin of the efierent canal, such 

 as Ozius, Epixanthus, Heteropanope, and Filumnus ; but it is dis- 

 tinguished by its outer physiognomy — the enlarged cephalo- 

 thorax, which is very convex longitudinally, the transverse orbits, 



* I will here remark that Eurycarcinus integrifrons, which I described some 

 years ago (Notes from the Leyden Museum, i. p. 65), may perhaps prove to be 

 identical with Eurycarcinus orientalis, very shortly described by A. Milne- 

 Edwards from specimens obtained at Bombay (Annal, Soc. Entom. France 

 1867, p. 277). 



