250 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



Genns ACTAEA de Haan 



Actaea de Haan, Fauna Japon., Crust., 1833, pp. 4 and 18; type, A. savignii 

 (Milne Edwards) = Cancer savignii Milne Edwards 1834 = C. granulatus 

 Audouin, 1825, not C. granulatus Linnaeus, 1758. — Rathbun, Bull. U. S. 

 Fish Conim., vol. 20 for 1900, pt. 2 (1901), p. 33.— Odhner, Goteborg's K. 

 Vet. Handl., Fjarde Foljden, vol. 29, No. 1, 1925, p. 35 (part). 



Anchilops Gistel, Naturg. Thierreichs, 1848, p. viii, substituted for Actaea, 

 which was considered preoccupied in botany. 



Actaeodes Dana, Amer. Journ. Sci., ser. 2, vol. 12, 1851, p. 126; type, A. tomen- 

 tosus 'Dana. = Zozymus tomentosus Milne Edwards, 1834. 



Iphimedia Duchassaing, MS., in A. Milne Edwards, Nouv. Arch. Mus. Hist. 

 Nat., Paris, vol. 1, 1866, p. 271; type, /. sulcata Duchassaing, MS., 1865,= 

 A. setigera A. Milne Edwards, 1S65 = Xantho setiger Milne Edwards, 1834. 



Banareia A. Milne Edwards, Ann. Soc. Entom. France, ser. 4, vol. 9, 1869, p. 

 168; type, B. armata A. Milne Edwards. 



Euxanthodes Paulson, Investig. Crust. Red Sea, vol. 1, 1875, p. 33; type, E. 

 granulatus Paulson = Cancer granulatus Audouin, 1825 (not C. granulatus 

 Linnaeus, 1758) = C. savignii Milne Edwards, 1834. 



Psaumis Kossmann, Zool. Ergeb. Reise Kiistengeb. Rothen Meeres, Crust., 1877, 

 p. 26; type, P. fossulatus (GirsLTd) = Cancer fossulatus Girard, 1859. Psau- 

 mis used by Pascoe, Trans. London Ent. Soc, ser. 3, vol. 3, 1866, pp. 228 

 and 246, for a species of Coleoptera. 



Cycloblepas Ortmann, in Semon, Zool. Forsch. Austral, u. Malay. Arch., Crust., 

 1894, p. 53; type, C. semoni Ortmann. 



Carapace convex fore and aft, slightly convex or fiat from side to 

 side, commonly broad, regions well demarcated by deep grooves and 

 again subdivided into lobules, which are usually convex and granular. 

 Antero-lateral borders as a rule four-lobed, lobes shallow and often 

 indistinct. Postero-lateral borders usually concave, always short, 

 not strongly convergent. Front between a third and a fourth the 

 greatest width of carapace, deflexed, cleft in middle line into two lobes. 

 Upper edge of orbit tumid, usually with two fissures or sutures; a 

 third fissure below outer orbital angle; eye-stalks short and thick. 

 Antennules folding obliquely or nearly transversely. Basal antennal 

 segment usually stopping at angle of deflexed front, but often pro- 

 longed beyond this, toward or nearly into orbit; flagellum about as 

 long as orbit and lodged in orbital hiatus. Merus of external maxilli- 

 peds with anterior border little oblique. Chelipeds equal in both 

 sexes; fingers either acute or blunt-pointed, sometimes hollowed out 

 at tip. Abdomen of male five-jointed, somites three, four, and five 

 fused. 



Contains many species. Bahamas and Florida Keys to Bahia, 

 Brazil; Bermudas; Cape Verde Islands; Ascension Island; east coast of 

 Africa from Natal northward; Indian Ocean; Australia; East Indian 

 Islands to Japan; islands of the Pacific to Hawaiian Islands; Gulf of 

 California, Mexico, to Ecuador and Galapagos Islands. 



Usually found in shallow water but reported from a depth of 400 

 fathoms. 



