194 DR. J. G. DE MAN OIST THE PODOPHTHALMOITS 



margin with a somewhat larger tooth at the base, and with some 

 smaller teeth. 



Both species, when compared together, may be readily distin- 

 guished by the ambulatory legs of S. Kraussi being longer 

 than those of the African form. The penultimate pair of ambu- 

 latory legs in 8. Kraussi are about four times as long as the 

 distance between the estraorbital teeth of the carapace, but in 

 8. longipes only three times. The joints of these legs are more 

 slender and more elongate than in the African species ; and thus 

 the meropodites of the last pair of legs are about thrice as long 

 as broad, whereas in S. longipes they are little more than twice as 

 long as broad. So also the propodites of the penultimate pair 

 of legs, the longest of all, are in 8. Kraussi about five times, 

 but in 8. longipes only three times as long as broad. The dactj- 

 lopodites are also more elongate than in the species described 

 by Krauss. The whole upper surface of its carapace is rather 

 coarsely punctate ; near the greatly divergent lateral margins 

 it is somewhat hairy, and the sides are marked with a few 

 oblique, elevated, slightly hairy lines, the foremost terminating 

 at the anterior epibranchial tooth. The postfrontal lobes are 

 but little prominent, and do not hide the front, when the 

 carapace is looked at from above ; the median groove is \erj 

 deep, as in 8. longipes, and the cristate internal lobes are 

 scarcely distinct from the much smaller external ones. Tlie 

 upper surface of the postfrontal lobes is transversely rugose. 

 Dimensions of the male : — 



millim. 



Distance between the external orbital angles 13|- 



Length of the carapace (with the front) 13|- 



Breadth of the front, between the eye-peduncles .. 6| . 

 Breadth of the posterior margin of the cephalothorax 

 between the basipodites of the last pair of legs . . 9^ 



Length of the larger hand 11 



Length of the first pair of ambulatory legs, the 



shortest of all 29 



Length of the third pair of ambulatory legs, the 



longest of all 52 



Length of the fourth (or last) pair of ambulatory 



legs 32 



Length of the propodites of the longest pair of legs 12 



