PART 1 garth: pacific oxyrhyncha 221 



Leucippe pentagona, Miers, 1879c, p. 649. 



Pugettia species, Miers, 1881, pp. 63, 66. 



Pugettia australis Miers, 1881, p. 66; type locality, mouth of Rio de la 



Plata; type in British Museum. 

 Leucippe ensenadae, Ortmann, 1893, p. 41. 



Type: Female holotype, length 11.25 mm, in Paris Museum. 



Type locality: Shores of Chile. 



Pacific localities subsequently reported, with collectors: Lower Cali- 

 fornia, Mexico: Magdalena Bay, 51 fathoms, Albatross (Rathbun, 

 1898). 



Atlantic analogue: The species occurs in the Atlantic, from Cape St. 

 Roque, Brazil, to Patagonia. 



Diagnosis: Rostrum short, bifid, horns closely approximated. Lateral 

 margins lamellate, three rounded lobes in addition to acute postorbital 

 tooth. Chelipeds and legs moderately cristate. Male first pleopod subcylin- 

 dricai, opening terminal. 



Description: Carapace subtriangular, smooth, median region sparingly 

 tumid ; rostrum elongate, furcate, horns triangular, acute, and with a 

 triangular interval; lateral margins of carapace very thin, and a little 

 reflexed, four-toothed or angulately undulate, the teeth unequal, poste- 

 rior tooth arcuate behind, and produced upon the posterolateral surface 

 of the carapace. Pterygostomian region three-toothed, or having a single 

 tooth situated in a large depression. [Legs] naked, [merus] cristate. 

 (Dana, 1852, of Leucippa laevis) 



Material examined: Magdalena Bay, Lower California, Mexico, 51 

 fathoms, May 2, 1888, Albatross station 2833, 1 young male (U.S.N.M. 

 No. 21902). (Photographed) 



Measurements: Young male: length 4.1 mm, width 3.2 mm. 



Color in life: Tawny yellow. (Milne Edwards and Lucas, of Leu- 

 cippa ensenadae) 



Habitat: On bottom of black sand. (Miers, of Pugettia australis) 

 The Magdalena Bay specimen came from a bottom of green mud. 

 (Rathbun) 



Depth: 51 fathoms; also reported from 28 fathoms on the Atlantic 

 side. 



Remarks: Through the courtesy of Dr. F. A. Chace, Jr., of the 

 U. S. National Museum, the writer has been able to examine the single 

 specimen obtained by the Albatross off Lower California. An immature 

 male, slightly over 4 mm long, it constitutes at once the only record for 



