1921] Schmitt: The Marine Decapod Crustacea of California 165 
evenly convex, tapering somewhat anteriorly, transversely rugose, anterior edges 
of rugae fringed with closely set, short hairs, dorsal surface with one or more 
pairs of sharp spines, lateral margins spiny. One or more of the abdominal 
segments often with a series of spinules on the anterior margin. 
KryY TO THE CALIFORNIA SPECIES OF MUNIDA 
I. Abdomen and posterior margin of carapace unarmed. 
quadrispina, p. 165. 
II. Second, third and fourth segments of abdomen, and posterior margin of cara- 
pace armed with spines. (Known only from 158+ fathoms.) 
hispida, p. 166. 
Munida quadrispina Benedict 
Munida quadrispina Benedict, Proc. U. S. Nat. Mus., 26, 269, fig. 17. 
1902; Rathbun, H. A. E., 10, 166, 1904. 
Fig. 105. Munida quadrispina, X 1% (from Benedict, U. S. N. M.). 
