THE FOSSIL STALK-EYED CRUSTACEA 57 



Occurrence. — California ; Pleistocene series : 



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

 Pedro formation; over 100 movable and 1 immovable finger: Cat. 

 Nos. 353365 and 353366, U.S.N.M. 



San Pedro; four movable fingers. 



Deadman Island, southeast of San Pedro; 17 movable fingers. 



SigTial Hill (or Los Cerritos), northeast of Long Beach; upper 

 San Pedro formation; two movable fingers, major and minor. 



Range of Recent specimens. — From Monterey to San Diego. 



L. heathii has similar fingers to those of L. leucoinmius., and it 

 is possible that it is included among the fingers above listed. L. leu- 

 comanus is of more frequent occurrence to-day than heathii and 

 especially in the neighborhood of San Pedro. The two species may 

 have had a common origin in the Pleistocene. 



LOPHOPANOPEUS LOCKINGTONI Rathbun , 



Xanthodes leucomanus Lockington, Proc. California Acad. Sci., vol. 7, 1876 



(1877), p. 100 (not leucomanus, p. 32). 

 LopJiopanopeus locking toni Schmitt, Univ. California Publ. Zool., vol. 23, 



1921, p. 244, pi. 37, fig. 2.— T. S. Oldroyd, Proc. U. S. Nat. Mus., vol. 



65, art. 22, 1924, p. 23. 



Occurrence. — California: Nob Hill (lumber yard), northeast of 

 San Pedro; lower San Pedro formation, Pleistocene series; nine 

 major movable fingers; Cat. No. 353376, U.S.N.M. As in L. diegen- 

 sis, some of the fossil fingers are indicative of much larger specimens 

 than have yet been rej^orted among Recent material. 



Range of Recent specimens. — From San Pedro to San Diego, Cali- 

 fornia; Gulf of California (Lockington). 



LOPHOPANOPEUS OLEARIS, new species 



Plate 11, fig. 4 



Description. — Carapace well areolated, the gastric and its subre- 

 gions, the hepatic and the branchial regions strongly marked ; meso- 

 gastric region small, narrow part slightly constricted near the base, 

 anteriorly acute ; epigastric and protogastric lobes raised. Still more 

 prominent is the ridge which is parallel to the coalesced antero- 

 lateral tooth and divides the hepatic region into two almost equal 

 parts. The posterior half of the branchial region is dorsally swollen 

 forming a circular smoothly rounded boss. Between the branchial 

 and the cardiac-intestinal region there is a narrow and obliquely 

 longitudinal ridge. 



The two sides of the frontal margin are a little oblique to each 

 other; there is a large median pit near the edge but no emargina- 

 tion is apparent. A depression on the dorsum between front and 



3020—26—5 



