1884.] CRUSTACEANS FROM MAURITIUS. 1! 



which in the specimen received from M. Robillard is of a bright rose- 

 pink, the dorsal surface of the carapace covered with numerous 

 rather large white spots, which are smaller near to the front and 

 antero-lateral margins ; the chelipedes are slenderer (a character 

 probably due to the sex of the specimen). Milne-Edwards describes 

 the coloration as whitish, but it is probable that his specimen was 

 bleached. 



The correct generic position of A. pubescens is doubtful ; in 

 external appearance (i. e. in the very widely transverse granulated 

 carapace) it has altogether the fades of a species of Carpilodes, but 

 the basal antennal joint does not, as in that genus, enter the inner 

 orbital hiatus. It cannot, in the classification proposed by Prof. 

 Dana (the only complete system since that of H. Milne-Edwards), be 

 retained in Liomera, since the fingers of the chelipedes are strongly 

 excavated. I place it therefore in the genus Actceodes, to which it 

 belongs in essential generic characters. 



This species has been hitherto a desideratum in the Museum 

 collection. 



CHLORODIUS NIGER. 



Cancer niger, Forskal, Descript. Animalium, p. 89 (1/75). 



Chlorodius niger, Riippell, Beschreib. 24 kurzschwanzigen Krabben 

 des Rothen Meeres, p. 20, pi. iv.fig. 7 (1830) ; M.-Edwards, Hist, 

 nat. des Crust, i. p. 401 (1834); A. Milne-Edwards, Nouvelles 

 Archives du Muse'um d'hist. naturelle, ix. p. 214 (1873), and ref. 

 to synonyma. 



Chlorodius rufescens, Targioni-Tozetti, Zoologia del viaggio della 

 R. piro corvetta ' Magenta,' Crostacei, p. 43, pi. iv. figs. 6-8, 10-12, 

 14, 18 (1877), war. 



An adult male of large size of this common and widely distributed 

 Oriental species is in the collection. 



The characters mentioned by Targioni-Tozetti as distinctive of his 

 C. rufescens are, I think, not of specific importance. I have ex- 

 amined specimens in whicli the posterior lateral marginal tooth 

 only is spiniform, and the other teeth of the lateral series are 

 rounded and obtuse. 



Trapezia flavopunctata. 



Trapezia flavopunctata, Eydoux and Souleyet, Voyage de la 

 ' Bonite,' Zoologie, Crustaces, p. 230, pi. ii. fig. 3 (1841). 



An adult male and female of large size are in the collection. 

 They agree with the description and figure cited in nearly every 

 particular, except in having no distinct carina on the outer margin of 

 the merus of the chelipedes ; the red areolations of the carapace and 

 limbs (defining the yellow spots) are even larger than in the figure 

 of MM. Eydoux and Souleyet. 



This species is apparently well distinguished fromTrapezia areolata, 

 Dana 1 , by the extension of the areolae of the body over the ambulatory 



1 U.S. Exploring Expedition, xiii., Crustacea, p. 259, pi, xv. fifi. 8 (1852). 



