28 STALK-EYED CRUSTACEA. 
The peculiar form and arrangement of the white tubercles on the cara- 
pace give to this animal the aspect of a piece of stone coral. 
Station 3353. 695 fathoms. 1 female. 
B00.) 40" 7 << 5 males, 4 fem. (2 ovig.). 
ey ots. O60) 1 male. 
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Famity GECARCINID Aj. 
GECARCINUS Leacu. 
Trans. Linn. Soc. London, XI. 309, 322, 1815. 
Gecarcinus malpilensis Fax. 
Plate IV., Fig. 2, 2°, 2. 
Bull. Mus. Comp. Zodl., XXIV. 157, 1893. 
Carapace very broad and convex anteriorly, flattened and narrowed pos- 
teriorly ; surface microscopically granulated ; antero-lateral margin rounded, 
not denticulated ; the median gastric furrow is well marked; the furrow 
separating the gastric from the branchial regions does not extend forward 
far enough to separate the gastric from the hepatic area; the so-called 
genital area is separated by a pronounced groove from the branchial and 
cardiac regions, but not from the gastric; there is a deep indentation at 
the anterior extremity of the lateral genital furrows; the furrows bound- 
ing the cardiac region on either side are moderately developed. Front 
deflexed at a right angle to the axis of the body, deep, concave above the 
margin, margin not reflexed, granulated. The merus of the outer maxilli- 
peds is five-sided, outer side convex, distal slightly notched, antero-internal 
straight and parallel to the long axis of the body, forming an obtuse angle 
with the postero-internal margin, which is slightly concave. Merus and 
carpus of chelipeds devoid of spines or teeth. Dactylus of the ambulatory 
legs furnished with six rows of spines. 
Length, 55 mm.; breadth, 76 mm.; width of hind border of carapace, 
19 mm.; width of front, 11 mm.; depth of front, 7 mm. 
Malpe'o Island, March 5. 1 male. 
This species is very distinct from any previously described. Compared 
with the previously known species from the Pacific coast, it is nearest to 
G. quadratus Sauss., but the outline of the carapace is very different, being 
