476 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 21 



Heterocrypta occidentalis (Dana) 

 Plate Z 4 , Figs. 14, 14a; Plate 55, Fig. 2 



Cryptopodia occidentalis Dana, 1854, p. 430, woodcut. Stimpson, 1857b, 



p. 458. Lockington, 1877c, p. 78. A. Milne Edwards, 1878, p. 169. 



Lambrus frons-acutis Lockington, 1877a, p. 31 ; type locality, Santa 



Catalina Island, California; type not extant; 1877c, p. 78. 

 Heterocrypta occidentalis, Holmes, 1900, p. 44. Rathbun, 1904a, p. 

 170; 1925, p. 559, pis. 204, 205; 1926, p. 28. Weymouth, 1910, 

 p. 21, pi. 2, figs. 4, 5. Hilton, 1916, p. 71, fig. 7. Nininger, 1918, 

 p. 36, fig. 1. Schmitt, 1921, p. 192, text-fig. 119. Johnson and Snook, 

 1927, p. 363, text-fig. 316. Ricketts and Calvin, 1939, p. 182, 

 pl. 35. 



Type: 31.7 mm wide specimen, sex not stated; probably in Yale 

 Museum. (Rathbun, 1925) 



Type locality: Monterey, California; Wm. Rich, collector. 



Localities subsequently reported, ivith collectors: California: Gulf 

 of the Farallones, 33 fathoms, and Monterey Bay, 10-31 fathoms, Alba- 

 tross (Rathbun, 1904a, 1925) ; Monterey Bay, 10-15 fathoms (Wey- 

 mouth) ; Pacific Grove, J. O. Snyder, and off Brockway Point, Santa 

 Rosa Island, 40-45 fathoms, Albatross (Rathbun, 1925) ; Hermosa 

 Beach (Hilton); off Venice and off San Pedro, Anton Dohrn; San 

 Pedro, M. Baldridge, H. N. Lowe (Rathbun, 1925) ; Santa Catalina 

 Island, Henry Hemphill (Lockington, 1877a, 1877c, as Lambrus frons- 

 acutis) ; off Santa Catalina Island, 50 fathoms, and San Clemente 

 Island, H. N. Lowe (Rathbun, 1925) ; Newport Bay, intertidal (John- 

 son and Snook; Ricketts and Calvin); Laguna Beach, 12-20 fathoms 

 (Nininger) ; La Jolla (Johnson and Snook) ; off San Diego, 22 fathoms, 

 Albatross (Rathbun, 1904a, 1925). Lower California, Mexico: off Los 

 Coronados Islands, 36 fathoms, Albatross (Rathbun, 1904a, 1925). 

 Gulf of California: Boca de las Piedras, Sinaloa, W. J. Fisher (Lock- 

 ington, 1877a, as Lambrus frons-acutis) . 



Fossil: California Pleistocene: Rincon del Portrero, Santa Monica 

 (Rathbun, 1926). 



Atlantic analogue: None. A distinctive west-coast endemic species. 



Diagnosis: Branchial ridges sinuous, terminating at lateral angle, 

 and not continued on gastric region, marked by two ridges coming to a 

 point posteriorly. Fingers short, making a distinct angle, though less 

 than a right angle, with palm. Male first pleopod thick, capitate, con- 

 torted, tapering to "neck" then flaring; longer setae on lip of groove, in 



