1921] Schmitt: The Marine Decapod Crustacea of California 171 



and fourth segments with a very prominent ridge, which bears an acute median 

 tooth. Length of rostrum variable, but always exceeding eye-stalks, usually by 

 twice their length. Chelipeds not hairy. 



Dimensioris. — Type: length of body 29 mm., length of carapace 15.5 mm., width 

 of carapace 9 mm. 



Type Locality. — Off Tres Marias Islands, 676 fathoms ("Albatross" station 

 3424). 



Distribution. — From off Destruction Island, Washington, to Tres Marias 

 Islands, Mexico; 134 to 859 fathoms; also at 47 and 60 fathoms, off Wilmington, 

 California, and Los Coronados Islands, respectively. Usually between 350 and 

 700 fathoms (Eathbun). 



Munidopsis aspera (Henderson) 



Plate 31, figure 1 



Elasmonotus asper Henderson, Ann. Mag. Nat. Hist. (5), 16, 416, 1885; 



"Challenger" Rept., Zool., 27, Anomura, p. 163, pi. 19, fig. 4, 1888. 

 Munidopsis aspera Eathbun, H. A. E., 10, 167, 1904. 



Characters. — Lateral margins of carapace arcuate, anterior margin with small 

 serrated lobe on orbital border behind ocular peduncle, upper surface beset with 

 irregular subacute tubercles, some of which are more prominent and even com- 

 pound toward median line of gastric area, tubercles more numerous elsewhere 

 toward lateral and posterior margins and two of large size are situated on the 

 cardiac area overhanging a shallow transverse groove; intervening spaces finely 

 granular. Second and third abdominal segments are each provided with a prom- 

 inent median tubercular elevation, the surface of which is roughened; scattered 

 tubercles of small size present toward lateral margins of same, segments, posterior 

 segments smooth. Length of rostrum variable, usually twice length of eye- 

 stalks, though in some male specimens it scarcely exceeds their length. Chelipeds 

 hairy. 



Dimensions. — Type, ovigerous female: length of body 28 mm., length of cheli- 

 peds 27 mm. 



Type Localities. — Off Patagonia, 425 fathoms, and off coast of Brazil, 1500 

 fathoms. 



Distribution. — Also taken by the "Albatross" from off Santa Catalina and 

 San Clemente islands, California, to Straits of Magellan and Galapagos islands, 

 57 to 782 fathoms. Mostly between 400 and 600 fathoms. Brazil, 1500 fathoms 

 (Henderson). 



Family Albuneidae 



First pair of legs subchelate; second to fourth legs with last joint curved 

 and flattened. Carapace flattened, without wings to cover the legs. Third max- 

 illipeds narrow, with exopodites. Abdomen bent under thorax; tail-fan not 

 adapted for swimming. 



Key to the California Genera of Albuneidae 



I. Eye-peduncles very slender, elongated, cylindrical, and articulated in the 



middle. (Not known north of San Francisco.) 



Blephanpoda, p. 172. 



II. Eye-peduncles lamellate, compressed, almost squamiform, cornea rudimentary. 



(Not known north of San Pedro.) 



Lepidopa, p. 172. 



