1921 1 Schmitt: The Marine Decapod Crustacea of California 169 



directed backward; one on the cardiac area; two (rarely six) on the hind margin 

 of the carapace ; one on each branchial area ; there is a spine at the external angle 

 of the orbit, and the lateral margin of the carapace is spinose. Second, third and 

 fourth segments of abdomen conspicuously two-ridged ; the second segment has a 

 pair of small spines on the anterior ridge, and another pair nearer the median line 

 on the posterior ridge; third segment also with a pair of spines on the anterior 

 ridge, and occasionally with a third spine in the median line on the posterior 

 ridge. Chelipeds long, hairy, and very spiny from the proximal end of the merus 

 to the base of the fingers. 



Dimensions. — Type, ovigerous female : length 48.5 mm. ; length of carapace 

 26 mm. ; breadth 15 mm. ; length of rostrum 8 mm. 



Type Localities. — Off Tres Marias Islands ("Albatross" stations 3424 and 

 3425), 676 to 680 fathoms, and off Acapulco, Mexico ("Albatross" station 3417), 

 493 fathoms. 



Distribution. — From off Anacapa Island, California, to off Acapulco, Mexico; 

 302 to 680 fathoms. 



Munidopsis verrilli Benedict 



Munidopsis verrilli Benedict, Proc. U. S. Nat. Mus., 26, 291, fig. 34, 1902. 



Fig. 108. Munidopsis verrilli, X 1% (from Benedict, U. S. N. M.). 



Characters. — Abdomen unarmed. Eostrum slender and triangular in cross 

 section, upper margin running back as a carina to a point behind the spines of 

 the gastric region. Front, from base of rostrum to a point under the anterolateral 

 spine, is nearly straight and is at an angle of about forty-five degrees to the median 

 line. Eye-stalks armed with two spines, of which the inner is much the longer. 



