130 University of California Publications in Zoology [Vol. 23 



b. Large hand transversely concave at base of fingers, trough-shaped, 

 or more or less discoidal, with raised margins; bent at an 

 angle with the wrist, 

 i. Greater part of upper surface of large hand markedly dis- 

 coidal, flat, with raised margins which posteriorly separate 

 it from a narrow convex basal (proximal) portion filling 

 in the angle which the upper surface makes with the wrist, 

 or carpus. (Not known north of Santa Monica Bay.) 



Pylopagurus holmesi, p. 144. 

 ii. Transversely concave, trough-shaped portion of large hand not 

 marked off from and passing over rather evenly into con- 

 vex basal (proximal) portion. 



Pylopagurus minimus, p. 144. 



2. Dactyls of ambulatory legs exceedingly long and slender, almost as 



long as entire carapace, more than one and a half times as long as 



anterior portion of carapace. Median projection of front prom- 



. inent, somewhat elongate, tip rounded, sides subparallel. 



Parapagurus mertensii, p. 146. 



Genus Pagurus Fabricius 



No paired appendages, except the uropods on the abdomen of either sex. 

 External maxillipeds widely separated at base; exopodites of all three pairs of 

 maxillipeds flagellate. Chelipeds usually dissimilar and unequal, the right being 

 much the larger; very rarely (not in the California species) are they subequal. 

 Fourth pair of legs subchelate. 



Pagurus ochotensis Brandt 



Pagurus (Eupagurus) bemliardus var. C, spinimana; or sp. ochotensis 



Brandt in Middendorff, Eeise in den aussersten Norden und Osten 



Sibiriens,' Bd. II, Zool., Th. I, p. 108, 1851. 

 Pagurus ochotensis Holmes, Occas. Papers Calif. Acad. Sci., 7, 137, 1900; 



Benedict, Proe. U. S. Nat. Mus., 23, 463, text fig., 1901; Rathbun, 



H. A. E., 10, 157,. 1904. 



Characters. — Large surface of small hand horizontal, thickly set with slender 

 spines; large hand likewise spiny; both hands hairy, hairs not reaching to the 

 ends of the spines. Anterior portion of carapace wider than long ; front tridentate, 

 median and lateral teeth triangular, acute, of about equal prominence. Eye-stalks 

 short and stout, about one-half the length of the anterior portion of the carapace. 

 Acicle much longer than eye-stalks. Dactyls of ambulatory legs spinous, twisted, 

 nearly as long as entire carapace. 



Dimensions. — Type: length of carapace 31.8 mm., width 27.5 mm. Length of 

 carapace of Bay specimens generally between 6 and 12 mm. 



Color.— Color of dried specimen, yellowish, spotted and banded with red 

 (Brandt). Of alcoholic specimens is straw yellow. Slender streaks of red run 

 longitudinally on the carpal, propodal, and dactyl joints of the ambulatory legs. 

 The merus joints have two transverse streaks of the same color (Benedict). 



Type Locality. — Okhotsk Sea. 



Distribution. — From Unalaska to San Diego, California, 6 to 80 fathoms (Bath- 

 bun). Okhotsk Sea (Brandt). Japan (Stimpson) (Balss). 



