1921] Schnutt: 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. 
Dimensions.—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 (Rathbun). 
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, pl. 19, fig. 4, 1888. 
Munidopsis aspera Rathbun, 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-peduneles very slender, elongated, cylindrical, and articulated in the 
i : f a isco. 
middle. (Not known north of San Francisco.) leg hurnode, ps 172. 
II. Eye-peduncles lamellate, compressed, almost squamiform, cornea rudimentary. 
f Pedro. 
(Not known north of San Pedro.) Tebiaona, of 172. 
