184 RATHBUN 
The upper margin of the hand has two longitudinal ridges, the outer 
straight, the inner curved and ending proximally in a tooth; outer sur- 
face of hand granulate, the granules tending to form in longitudinal and 
transverse lines, and becoming fainter toward the fingers. 
The dark color of the fingers does not run back on the palm. 
The carpal joints of the ambulatory legs are distinctly but not mark- 
edly bilobed on the anterior or upper margin. 
The propodal joints have a slightly convex anterior margin. 
Dimensions. —Male, length 9.6 mm., width 13.3 mm., proportion of 
length to width 1: 1.39; fronto-orbital width 7.9 mm., proportion of 
fronto-orbital width to width of carapace 1: 1.68. 
LOPHOPANOPEUS DIEGENSIS Rathbun. 
Plate Ix, . fie. 3: 
Lophopanopeus diegensis RATHBUN, Amer. Nat., XXXIV, 137, 1900. 
Distribution.—Off Point Conception, California, 31 fathoms (Albatross 
station 2908); San Diego, ro fathoms (H. Hemphill), one male, type 
(Cat. No. 4281). 
The carapace has a few granulate lines on the antero-lateral regions. 
The frontal lobes are slightly oblique and sinuous, the outer tooth 
inconspicuous. The front is deflexed so that its true edge does not show 
in the view figured. 
The second antero-lateral tooth, though small, is dentiform and not 
merged with the first or orbital. The third, fourth, and fifth teeth are 
prominent, carinate, and subacute. 
The carpus of the chelipeds has about 35 unequal tubercles, irregularly 
placed, some of them forming lines. 
The hand is bicarinate above, the inner carina having a small promi- 
nence at the proximal end; a few tubercles on upper part of inner sur- 
face; upper and proximal portion of outer surface rough with fine granu- 
lated ruge. 
The dark color of the fingers does not run back on the palm. 
The carpal joints of all the ambulatory legs have on the anterior 
margin two prominent naked truncate tubercles, by which this species 
may at once be recognized. 
The propodal joints of the last two pairs have a smaller similar lobe at 
the proximal end of the anterior or upper margin. 
Dimensions.—Male, length 7.9 mm., width 11.4 mm., proportion of 
length to width 1: 1.44; fronto-orbital width 6.6 mm., proportion of 
fronto-orbital width to width of carapace 1: 1.37. 
