578 PROCEEDINGS OF THE \ l//o\ | /. \n si:i \i. vol.38. 



PORTUNUS (ACHELOUS) BREVIMANUS (Faxon >. 



Arh ( Ion s brevimanus Faxon, Mem. Mus. Comj). Zool., vol. 18, 

 1895, |>. 23. San Benedicto Island, Lower California, to 



Cocos Island, Central America; Galapagos' Islands. To a 



depth of 00 fathoms. 



PORTUNUS (ACHELOUS) ANGUSTUS Rathbun. 



Proc. U.S. Nat. Mus., vol. 21, 1898, p. 594, pi. 44, fig. 2. Galapa- 

 gos Islands, on reef, and also from 12 to 20 fathoms. 



PORTUNUS (ACHELOUS) STANFORDI Rathbun. 



Proc Wash. Acad. Sci., vol. 4, 1902, p. 282, pi. 12, fig. 11. 

 Galapagos Islands, on reef. 



Subfamily THALAMITINyI'.. 

 Genus CRONIUS Stimpson. 



CRONIUS EDWARDSII (Lockington). 



Am phitrifi idiriirdsii Lo( kington, Proc. Cal. Acad. Sci., vol. 7, 

 1876 (1877), p. 43 [3]. Lower California to Ecuador. 



Subfamily PODOPHTHALMIN^. 

 Genus EUPHYLAX Stimpson. 



EUPHYLAX DOVII Stimpson. 



Ann. Lye. Nat. Hist. X. Y., vol. 7, 1860, p. 226, pi. 5, fig. 5. 

 Mexico (?); wot coast of Central America to Payta, Peru. 



Family POTAMONIM). 



Subfamily P< I'l'A M< > X I V . -K. 



Genus POTAMON Savigny. 



POTAMON (GEOTHELPHUSA) CHILENSIS (Heller). 



Thelphusa chilensis Heller, Verh. k.-k. Zool. Bot. Ges. Wien, 

 vol. 12. abth. 1, 1862, p. 520 [2]. — Geothelphusa chilensis 

 Heller, Reise Novara, vol. 2, abth. 3, 1865, Crust., p. 33, 



pi. 3, fig. 4. Chile. 



Subfamily 1 'S EUDOTHELPHUSIN. K. 



Genus PSEU DOTH E LPHU SA Saussure. 

 PSEUDOTHELPHUSA MACROPA (Milne Edwards). 



Boscia macropa Milne Edwards, Ann. Sci. Nat. (3), Zool., 

 vol. 20, 1853, p. 208 [174]. — Pseudothelphusa macropa Rath- 

 bun, Nouv. Arch. Mus. Hist. Nat., Paris, vol. 7. 1905, p. 270, 

 pi. 13, fig. 1, text fig. 7 1. Fresh waters of Colombia and 

 Bolivia. 



* 

 PSEUDOTHELPHUSA LINDIGIANA Rathbun. 



Bull. Mus. Hist. Nat. Paris, 1897, p. 59; Nouv. Arch. Mus. Hist. 

 Nat., Pari-, vol. 7. 1905, p. 277, text fig. 75. Fresh waters 

 of < lolombia and Ecuador. 



