184 DE. J. G. DE MAN OF THE PODOPHTHALMOUS 



the extraorbital teeth to the length being as 9 : 7| ; it is, there- 

 fore, nearly quadrate. The upper surface is rather depressed 

 as m S. 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 tlie 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 lialf the distance between the extra- 

 orbital teeth. The anterior margin is slightly emarginate in the 

 middle, and the four postfrontal 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 &. inter- 

 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 8. 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. 



