1 84 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 i: 1.39; fronto-orbital width 7.9 mm., proportion of 

 fronto-orbital width to width of carapace i : 1.68. 



LOPHOPANOPEUS DIEGENSIS Rathbun. 

 Plate ix, fig. 3. 



Lophopanopeus diegensis RATHBUN, Amer. Nat., xxxiv, 137, 1900. 



Distribution. Off Point Conception, California, 3 1 fathoms (Albatross 

 station 2908); San Diego, 10 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 rugae. 



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 i: 1.44; fronto-orbital width 6.6 mm., proportion of 

 fronto-orbital width to width of carapace i : 1.37. 



