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University of California Publications in Zoology [Vol. 23 



Carapace is iridescent; the short and rather elevated rugae are hairy. Merus 

 and carpus of ambulatory legs spiny. Merus of chelipeds triangular in cross- 

 section, with four spines on the upper ridge and two on the inner; carpus with 

 five or six spines ; two prominent ones on the crest of the palm ; prehensile edges 

 of fingers evenly dentate. 



Dimensions. — Type: length of carapace and rostrum 22 mm., of rostrum about 

 5 mm.; length of hand 13 mm. 



Type Locality. — Off San Diego, California, 822 fathoms ("Albatross" station 

 2923). 



Distribution. — From Monterey Bay, California, to off Cerros Island, Lower 

 California, 684 to 1084 fathoms. 



Munidopsis quadrata Faxon 



Munidopsis quadrata Faxon, Bull. Mus. Comp. Zool., 24, 188, 1893; Mem. 

 Mus. Comp. Zool., 18, 97, pi. 23, fig. 1, 1895; Eathbun, H. A. E., 10, 

 167, 1904. 



Fig. 109. Munidopsis quadrata, X about 2 (after Faxon). 



Characters. — Lateral margins of carapace straight, at right angles to straight 

 anterior margin, upper surface spineless but furnished with scattered low, squamous 

 tubercles; central part of the gastric region prominent above the anterior 

 branchial lobes, from which it is separated by deep pits; a prominent transverse 

 ridge on the cardiac region forms the posterior wall of a deep fossa. Second 

 segment of abdomen armed with a median spine, which is curved forward, third 



