184 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
the extraorbital teeth to the length being as 9:74; it is, there- 
fore, nearly quadrate. The upper surface is rather depressed 
as in 8. intermedia and S. sinensis, and is smooth, glabrous, and 
shining, the interregional grooves being almost obsolete; the 
epigastric and the protogastric lobes are, however, marked with a 
few short and small impressions, as in many other species of this 
genus. The lateral margins are parallel to one another, and 
present a small, little prominent, epibranchial tooth behind the 
extraorbital tooth. Laterally, the upper surface presents the 
ordinary oblique, elevated lines. The front is similar to that of 
S. sinensis, and is vertically deflexed; the proportion of the 
distance between the extraorbital teeth to the breadth of the 
front, measured between the eye-peduncles, is as 11 : 6, it is conse- 
quently a little broader than half the distance between the extra- 
orbital teeth. The anterior margin is slightly emarginate in the 
middle, and the four postfronial lobes are nearly equal to each 
other, and, being little prominent, they do not hide the anterior 
margin, when the carapace is looked at from above. The penul- 
timate joint of the male abdomen (fig. 14) has a different form 
from that of S. intermedia, being comparatively much longer in 
proportion to its breadth. 
The legs very closely resemble those of specimens of S. cnter- 
media of equal size, but the following distinctive characters 
occur. ‘The anterior margin of the arms is armed with a strong 
acute spine, which is denticulated along its margins. The outer 
surface of the hands is somewhat granular on its proximal half; 
the upper margin of the palm presents two or three oblique, 
minutely-granulated lines, but no trace of pectinated ridges. — 
The convex, slightly granular, inner surface of the palm presents 
no trace of the granulated crest found in S. intermedia. The 
fingers are smooth externally as well as internally ; the upper 
margin of the mobile finger is also smooth, but a row of nine or 
ten small red spots may be observed on it, which may perhaps 
become small tubercles at a more advanced age. The ambula- 
tory legs agree with those of S. intermedia. The specimen is 
preserved in alcohol, and the upper surface of the cephalothorax 
of a dark greenish colour, the anterior legs being yellowish and 
the ambulatory legs greyish. The distal ends of the propodites 
are, however, marked with a fine violet colour, and the upper 
surface of the carpopodites and of the hands of the chelipedes 
are beautifully marked with small red spots. 
