THE FOSSIL STALK-EYED CRUSTACEA 75 



surface, however, has a longitudinal ridge through the middle as in 

 P. tnangulum. 



Genus PORTUNUS Weber 



Portunus Webeb, Nomeuclator Entomologicus, 1795, p. 93 ; type, P. pelagicus 

 (Linnaeus). 



Carapace transverse, little convex. Front cut into three to six, 

 usually four teeth ; antero-lateral borders oblique, arched, longer than 

 postero-lateral, cut into nine teeth, of which the ninth may be en- 

 larged. Orbits often with a dorsal inclination, inner angle usually 

 very prominent. Chelipeds massive; spines on arm and inner and 

 outer angles of wrist ; palm prismatic, costate, usually spined ; fingers 

 usually nearly as long as palm, strongly toothed. Legs of last pair 

 adapted for swimming. Abdomen of male triangular. 



Miocene; Pleistocene; Recent. 



PORTUNUS (PORTUNUS) XANTUSII (Stimpson) 



Achelous xantusii Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860 



(1862), p. 222. 

 Portunus xantusii Schmitt, Univ. California Publ. Zool., vol. 23, 1921, 

 p. 237, text-fig. 141, and synonymy. 

 Occurrence. — California : Spanish Bight, San Diego Bay ; Pleisto- 

 cene series; one fixed finger; Cat. No. 353349, TJ.S.N.M. 



Range of Recent specimens. — From Santa Monica Bay, California, 

 to Chile. Puget Sound (accidental). 



Genus CALLINECTES Stimpson 



Callinectes Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 220; 

 type, C. sapidus Rathbun. 

 Of large size. Carapace broad, areolated, antero-lateral margin 

 long, armed with nine strong teeth, the last being elongated in a 

 spine. Front either four or two toothed. Manus with five external 

 costae and not more than two teeth or spines ; fingers long, prehensile ; 

 teeth stout. Legs of last pair adapted for swimming. Abdomen of 

 male very narrow, ±-shaped. 



Eocene; Oligocene; Miocene; Pleistocene; Hecent. 



CALLINECTES BELLICOSUS (Stimpson) 



Lupa hellicosa Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1862, p. 57. 



Callinectes bellieosus Schmitt, Univ. California Publ. Zool., vol. 23, 1921, 



p. 236, text-fig. 140. and synonymy. 



Occurrence. — California; Signal Hill (or Los Cerritos), northeast 



of Long Beach; upper San Pedro formation. Pleistocene series; left 



immovable finger (distal two-thirds) of a large specimen. 



