30 STALK-EYED CRUSTACEA. 



Planes minutus (Linn.). 



Cancer minulus Linn., Sjst. Nat., cd. 10, L G25, 1758. 

 Planes minutus White, List Crust. Brit. Mus., p. 42, 1847. 



Station 2628. 1 fein. 



" 3413. 2 males, 2 fern. ovig. 



Off Acapulco, Mex. 1 male. 

 No local. 2 males, 1 fem. ovig. 



All of these specimens were taken from Green Turtles. The carapace of 

 the largest one (a female) measures 23 X 23 mm. 



GRAPSUS Lamarck. 

 Systeme des Animaux sans Vertebres, p. 150, 1801. 



Grapsus grapsus (Linn.). 



Cancer grapsus Linn"., Sjst. Nat., ed. 10, I. 630, 1758. 



Grapsus grapsus Ives, Proc. Acad. Nat. Sci. Pliila., 1891, p. 190. 



Indefatigable and Chatham Islands, Galapagos, 3 males, 3 fem. (1 ovig.). 

 There are also specimens in this Museum from Charles Island in the same 

 archipelago, collected during the voyage of the " Hassler." 



Compared with the typical form from Florida, the Galapagos specimens 

 have a higher and absolutely perpendicular front, the frontal lobes project- 

 ing even further forward than in specimens from Acapulco labelled " Grapsus 

 aUifrom " by Dr. Stimpson. The spots upon the carapace and legs are fewer 

 and more definitely circumscribed than in Florida specimens, and the outer 

 face of the carpus and hand of the chelipeds is uniform red. The ambulatory 

 legs are more robust. Carapace of a male, 63 X 69 mm. 



Family PINNOTHERID^. 



PINNIXA White. 



Ann. Mag. Nat. Hist., 1st Scries, XVIII. 177, 1846. 



Pinnixa panamensis Fax. 

 Plate v., Ficj. 1, 1% IK 



Bull. Mus. Comp. Zool., XXIV. 158, 1893. 



Male. — Carapace short and very broad, smooth and punctate for the 

 most part, granulated at the sides. The lateral angles form a prominent 



