CRUSTACEA NORTH PACIFIC EXPLORING EXPEDITION I23 



Plagusia orientalis Stimpson, Proc. Acad. Nat. Sci. Phila., x, p. 103 [49] > 

 1858. 



In this species the superior lobe of the ischium in the second and 

 third pairs of walking feet is prominent and dentiform, but never 

 denticulated — at least not in any of the specimens which we have 

 seen. 



The name P. tiiberculata was applied by Lamarck by mistake to a 

 specimen in which the pubescence had been rubbed off the carapax. 

 This specimen may have belonged to this species, but in the uncer- 

 taint}^ we have thought best to apply a new name. 



The species was found by us at the Hawaiian Islands and on the 

 outer shores of Hongkong. 



203. PLAGUSIA DEPRESS A' (Fabricius) Latreille 



Cancel- depresstis Fabricius, Suppl., 343. Herbst, Naturg. d. Krabben u. 



Krebse, i, 117, pi. in, fig. 35. 

 Grapsiis depressus LatrEillE, Hist. Crust, et Ins., vi, 66. 

 Plagusia immaculata Lamarck, An. s. vert., v, 247. 

 Plagusia depressa LatrEillE, Encyc. Meth., x, 147. Miene Edwards, 



Hist. Nat. des Crust., 11, 93; Mel. Carcin., p. 145. Dana, U. S. Expl. 



Exped., Crust, i, 369. 

 Philyra depressa De Haan, Fauna Jap., Crust., 31. 



This species in life is elegantly variegated with crimson and ^•el- 

 lowish. Specimens from Hongkong and Loo Choo are much 

 smoother than others. Besides these localities, it was found by Mr. 

 Squires, of the ''Hancock," abundantly in Caspar Strait, some- 

 times "attached to floating wood," and b}' Lieut. Van Wycke, of the 

 "Porpoise," at Tomboro, or New Ireland. 



Genus ACAXTHOPUS De Haan 

 204. ACANTHOPUS PLANISSIMUS= (Herbst) Dana 



Cancer planissiiniis Herbst, Naturg. d. Krabben u. Krebse, in. 3, pi. ux, 



fig. 3. 

 Plagusia claviniana Desm.vrest, jMilne Edwards, ct al. 

 Acanthopus claviinanus De Haan, Fauna Jap., Crust., p. 30. 

 Acanthopus planissimus Dana, U. S. Expl. Exped.. Crust., i,'373. jMilne 



Edwards, Mel. Carcin.. p. 146. 



The follDwing arc the life cc^lors (if a siiccinicn from Pi)rt Llovd. 

 found by Air. Kern : Carapax above bright red. inclining to orange, 

 with median bluish-white line, from which two l:)luish-whitc ]iatches 



? Plagusia tubcrculata Lamarck. 

 ' Percnon plaiiissiiniini (Herbst). 



