ACADEMY OF SCIENCES. 103 



fornia, but do not appear — judging from present knowledge — to inhabit the 

 Gulf of California, the present species has been found in abundance at La 

 Paz, Mulege Bay, Port Escondido and San Jose Island, all within the Gulf. 

 One peculiarity of this form is the bright red tint of the prominent transverse 

 ridge in front of the buccal area. None of the specimens I have seen from 

 Lower California exceed in size that brought from San Diego. 

 No. 36. Male, dried. San Diego. Hy. Hemphill. 



Menippe obtwsa. Stimpson, Notes on N. Amer. Crust. (Annals Lye. Nat. Hist., 

 N. Y., 1858), p. 7. 

 Panama. 



CHLOKODIN.E. 



No species of this group is mentioned by Stimpson, either in Crust, and 

 Echi. Pac. Shore N. Amer., or "Notes of North American Crustacea." I 

 have here described three species, all of which were brought from Lower Cal- 

 ifornia by Mr. W. J. Fisher. Although distinguished as a sub-family on ac- 

 count of the more or less perfect spoon-shaped tips of the dactylus and pollex 

 of the chelipeds, the Chlorodince are so closely related to the Xanthines that 

 it would be more natural to intercalate their genera among those of that sub- 

 family; for instance, Chlorodius next to Xantho, and Adceodes next to Adasa. 



Adceodes mexicanus. Lockington, Proc. Cal. Acad. Sci., March 20, 1876. 



Mazatlan, Magdalena Bay, La Paz, where a few were dredged in thirteen 

 fathoms; Port Escondido, Gulf of California; San Jose Island, Amortiguado 

 Bay, Mulege Bay. The carapax of the largest specimen obtained measures 

 33 millimetres in width, and 21 in length The color ranges from dark red- 

 dish brown, sometimes tinged with green to almost white, and in some cases 

 even the fingers are whitish. Females with ova were collected from July to 

 August. This species is found at low tide, under stones a»d in coral. 



No. 37. Male, dried. Mazatlan. H. Edwards. 



No. 46. Male and female, in spirits. Magdalena Bay. W. J. Fisher. 



Adceodes xantho. nov. sp. 



Carapax broadly transverse, without teeth on antero-lateral margins or front, 

 which slightly curve outwards in front of each areolet. Areolation complete, 

 middle region with nine areolets. The hinder posterior areolet (2P. Dana) 

 entire, long and narrow, four smaller areolets between this and the median 

 region, and ten areolets on the antero and postero-lateral regions of each side. 

 Chelipeds short, the meros hidden beneath the carapax, manus and carpus 

 about equal in length, their upper surface covered with tubercles about as 

 large as those of the carapax. All the raised portions of the carapax, and tu- 

 bercles of areolets covered with granules, the sulci between tomentose. Dac- 

 tyli of first pair very short, obtuse at end, the tips somewhat hollowed out, 

 but the hollows not circumscribed within. Hinder feet short, compressed, 

 their upper surface with elongated tubercles less distinctly granulated than 



