1921] Schmitt: The Marine Decapod Crustacea of California 201 
Kry TO THE CALIFORNIA SPECIES OF EPIALTUS 
I. First tooth of the anterolateral margin large and prominent. Sides of cara- 
pace in front of posterior lateral teeth nearly parallel. 
A. Rostrum obtuse, triangular, entire; no postocular spine. (Not known 
north of Monterey or Catalina Harbor.) f 
bituberculatus, p. 203. 
B. Rostrum bifid, a small postocular spine, and a small triangular preocular 
spine. 
productus, p. 201. 
II. First tooth of the anterolateral margin small, not prominent. Sides of ecara- 
pace convergent anteriorly between the two pairs of lateral teeth. Rostrum 
prominent, depressed, flattened above and having a small, triangular notch 
at the tip. No preocular spine, postocular small. (Not known north of 
Santa Barbara.) nuttallié, p. 202 
Epialtus productus Randall 
Epialtus productus Randall, Jour. Acad. Nat. Sci. Phila., 8, 110, 1839; 
Rathbun, R., The Fisheries and Fishery Industries of the U. S., see. 1, 
778, pl. 268, 1884; Holmes, Occas. Papers Calif. Acad. Sci., 7, 22, 
pl. 1, fig. 1, 1900; Rathbun, H. A. E., 10, 173, 1904; Weymouth, Stan- 
ford Univ. Publ., Univ. Ser., no. 4, 28, fig. 9, 1910; Baker, Rep. Laguna 
Mar. Lab., 1, 100, 1912. 
Fig. 124. Epialtus productus, X about 74 (from Rathbun, R., U. 8. N. M.). 
Characters.—Carapace smooth, sides in front of posterior lateral teeth nearly 
parallel; first tooth of anterolateral margin large and prominent. Rostrum bifid, 
deeply notched, inner margins of the horns slightly concave, outer convex. Pre- 
ocular spine small, triangular; postocular also small. Chelipeds stouter and 
except in old males shorter than first ambulatory legs; hand long and narrow, 
palm oblong, subcarinate above, becoming inflated with age; fingers slender, bent 
