THE FOSSIL STALK-EYED CRUSTACEA 77 



RANDALLIA PLEISTOCENICA. new species 



Plate 1, figs. 11 ami 12 



RandaUia, new species, T. S. Oldroyd, Proc. U. S. Nat. Mus., vol. 65, art. 

 22, 1924, p. 23. 



TJescnption. — Holotype : Manus much swollen inside in the proxi- 

 mal two-thirds; viewed from the outside the upper margin is 

 slightly curved, lower margin strongly arcuate, the propodal finger 

 inclined obliquely downward (pi. 1, fig. 12). Surface covered with 

 round bead tubercles of good size, the interspaces filled by gran- 

 ules; tubercles largest on the swelling of the inner surface where 

 they are more unequal than on the outer surface. ISIanus much 

 rougher than in R. ornata^ and shorter in proportion to its 

 width. Fixed finger long and narrow, densely granulate; two 

 ridges running lengthwise through the middle of the outer and of 

 the inner surface and a similar ridge on the lower edge ; in R. ornata 

 the pair of ridges on the outer surface is nearer the lower margin; 

 prehensile edge multidentate, teeth crowded, every third or fourth 

 one of larger size. 



Arm more coarsely tuberculate than hand, a little bent at the in- 

 ner third, as in ornata; it is somewhat stouter than in ornata, the 

 tubercles are nearer together, giving the surface a much rougher ap- 

 pearance (pi. 1, fig. 11). 



Measurements. — Length of largest arm (Deadman) 11.6 mm., 

 width 4.1 mm. Holotype, length of propodus (tip broken off) 8.2 

 mm., length of fixed finger 3.4 mm., height of palm 2.8 mm. 



Occurrence. — California : 



Nob Hill (lumber yard), northeast of San Pedro; lower San 

 Pedro formation. Pleistocene series; three hands with fixed finger 

 attached (one of which is the holotype), and six arms; Cat. No. 

 353346, U.S.N.M. 



San Pedro; Pleistocene: Kate Stephens collector; four arms. 



Deadman Island, southeast of San Pedro; Arnold collection, 

 Stanford University; 16 arms. 



Genus PERSEPHONA Leach 



Perseijhona Leach, Zool. Misc.. vol. 3, 1S17, pp. 18 and 22; type. P. puno- 

 tat a (Linnaeus). 

 Carapace ovoid or subglobular; three posterior spines, of which 

 two are at extremities of posterior border, the other median and 

 higher up. Front well advanced; regions little marked; hepatic 

 region generally separated from branchial region by a broad notch 

 in the margin. Orbits deep. Merus of outer maxillipeds not much 



