4 
ternally. 1st and 2d pair of legs about equal in length; hand of first pair, 
stoutish; fingers gaping when closed, the ends toothed and fitting neatly 
together; a large tubercle on movable finger in the centre of the gaping part. 
Carapace, with the regions tumid and spineless, smooth and rounded behind. 
A single specimen, male, was found between tides, near San Diego. The 
whole of the carapace and feet are covered with a short pubescence, becoming 
longer upon the margins of the limbs and forming a lamellate protuberance 
over the rostrum. Length, 0.65; width, 0.45; length of 2d pair of feet, 0.80. 
+ 
Lambrus frons-acutis. 
Carapace, transverse, somewhat pentagonal, each antero-lateral border 
having a rounded angle in the centre of its length; and the postero-lateral 
border forming an almost straight line with the posterior border. Rostrum, 
pointed, prominent, elevated, continuous with the elevated gastric region. 
A prominence at the cardiac region. Branchial regions prominent, each 
capped with a line of tubercles extending outward to the angle between antero 
and postero-lateral borders. Autero-lateral border finely toothed and ter- 
minating behind in an acute point. The portions of the carapace between 
the prominences are much depressed and perfectly smooth. Arm, carpus 
and hand of the first pair of legs, trigonal in section, each angle set with a 
continuous row’ of small tubercles. Dactylos turned inwards almost per- 
pendicularly to the hand, very small. A single dried specimen brought 
from Santa Catalina. Length, 0.50; breadth, 0.70; breadth across arms 
when bent, 1.33 inch. 
Xantho spini-tuberculatus. 
Front four-lobed, areolets of anterior and antero-lateral portions of carapace 
prominent; six teeth on antero-lateral margin, including that of posterior 
angle of orbit; chelipeds covered with smooth shining tubercles on the upper 
portions, those of the hand arranged in seven longitudinal series; fourth and 
fifth joints of the four hinder pairs of limbs beset with spines on their supe- 
rior portions. 
Specimens from Santa Rosa, presented and collected by W. G. W. Harford. 
Specimens from Monterey, presented and collected by J, G. Cooper. 
Specimens from San Diego, presented and collected by Henry Hemphill. 
Length of carapace of male, 0.44 width, 0.63 
ce re female, 0.38 eo OLD L 
Xanthodes latimanus. 
Front sinuate, the inner angle of the orbit raised into a point; carapax but 
slightly transverse; teeth N. T. S., prominent and pointed, D and E almost 
obsolete. Areolation of medial and antero-lateral regions distinct, the former 
having the parts 2 M, and 3 M entirely outlined. Hands, sub-equal, the right 
somewhat the larger; movable fingers very long, and curved abruptly down- 
ward; margin of manus continuous with the broad base of the fixed finger so 
as to form a sinuous sloping line; hinder feet compressed. This species may 
