1921] Schmitt: The Marine Decapod Crustacea of California 255 
Second segment of palp of outer maxilliped very small, shorter, and narrower 
than first segment, and having the narrow terminal segment attached at about 
its middle. 
As in F. subquadrata the palm increases in width to the distal end, the fingers 
are longer and inclined downward a little, the lower margin of the propodus 
being more markedly sinuous than in subquadrata; fingers not gaping, hairy along 
inner surface, a prehensile tooth at middle of dactyl and a smaller one at base 
of propodal finger. 
[Ambulatory] legs subeylindrical, naked, relative lengths 2, 3, 1, 4, the second 
leg on right side one-third longer than on left; first leg stouter than the others; 
propodites slightly curved, but while having nearly parallel margins they are a 
trifle stouter at distal end; an exception is that of second right leg, which tapers 
to distal end; dactyli short, slender, conical, and a little curved up to the hooked, 
horny tip, except the second of the right side, which is quite straight up to the 
tip and is also the longest (Rathbun). 
Dimensions.—Type, female: ‘‘Carapace about 7 mm. wide; approximate length 
of [ambulatory] legs of second pair, left 814, right 11 mm.’’ (Rathbun). 
Type Locality—Monterey, California; only a single female specimen known. 
Remarks.—Taken from the keyhole limpet, Lucapina crenulata (Rathbun). 
Genus Parapinnixa Holmes 
Carapace much broader than long, smooth, and shining; anterior margin nearly 
straight. Outer maxillipeds with ischium rudimentary, merus large and tri- 
angular; palp three-jointed, last joint attached to the tip of the preceding one. 
First pair of ambulatory legs the largest, the others diminishing successively in 
length, the last pair being quite small. 
Parapinnixa affinis Holmes 
Parapinniza affinis, Holmes, Occas. Papers Calif. Acad. Sci., 7, 95, 1900. 
Original Description of Female.—...the carapace is less than twice as wide 
as long...; the surface of the carapace is smooth and shining and the anterior 
margin straight. Front triangular, depressed, having a short median groove, 
Antennules oblique. Buccal area small, triangular, rounded in front, the posterior 
portion partly covered by a projection of the sternum. Chelipeds stout, smooth; 
hand thickened, smooth, rounded above and below; dactyl hooked at the tip and 
armed with a small tooth near the middle of the inner margin, the upper side 
smooth; pollex [immovable] finger, with two teeth at the tip. First pair of am- 
bulatory legs larger than the others; dactyls short and stout. Next two pairs com- 
paratively slender, having longer dactyls; last pair small, reaching about to the 
tip of the merus of the preceding pair; dactyls short and stout. Abdomen of 
the female widest at the third segment, behind which its shape is triangular, the 
tip broadly rounded (Holmes). 
Type Locality Deadman Island, San Pedro, California. 
Remarks.—This species has not been found since the original specimen was 
taken and described. 
Genus Pinnixa White 
Carapace much wider than long, more or less membranaceous. Outer maxilli- 
peds with ischium small; merus large, distal portion of outer margin convex; palp 
three-jointed, jointed to summit of merus; third joint articulated on inner side 
of preceding one near the base. Third pair of ambulatory legs larger and longer 
than others, usually considerably so. 
