302 DE, J. G. DE MAN ON SPECIES OF PAL^MON 



in length. The convex inferior margin carries 5 teeth, the first of which is situated below 

 the seventh of the upper margin, the fifth just opposite the middle of the smooth 

 intersjiace. The two portions into which the rostrum is divided by the lateral crest 

 are equally high. 



The outer footjaws project beyond the peduncles of the lower antennae by a third of 

 their terminal joint. The legs of the first pair extend by half their hand beyond the 

 antennal scales ; the slender carjous, 11-6 mm. long, is two and a lialf times as long as the 

 chela, which measures 45 mm., and the fingers of which are somewhat longer than the 

 palm. Only the right leg of the second pair is still present (fig. 16). It is considerably 

 feebler than that of the male and reaches with the distal third of the carpus beyond the 

 antennal scales. The carpus, 2 mm. thick at the distal end, is 1'25 mm. thick at the 

 extremity. The fingers shut together and are tliicJchj cocei^ed with felt ; the palm is 

 1"9 mm broad when looked at from above, but only 1'7 mm. in the middle when the 

 lateral side is measured, so that it is not exactly cylindrical. The spinules with which 

 the joints are covered are comparatively much smaller than in the adult male, but 

 their arrangement is the same. The hand is a little longer than the carpus, and the 

 carpus is much longer than the merus. The following three legs are somewhat less 

 stout than those of the adult male and their joints are almost smooth ; those of the fifth 

 pair reach to the end of the scaphocerites ; the two other pairs, which have about the 

 same length, are a little shorter. The meropodites of tlie third pair are 10'5 mm. long 

 and, in the middle, 133 mm. thick. 



The situation of Boutry, where the type specimens of Herklots Avere obtained, is in 

 the immediate vicinity of the River Prah, for Boutry is situated close to Dixcove, and 

 that place is not far distant from the mouth of the river. 



The cephalothorax of the only male from the Congo Coast is almost smootli. The 

 slender rostrum (PL 19. fig. 17), which projects about 1 mm. beyond the antennal scales, 

 is not straight, for the distal half curves somewhat upward and the upper margin is very 

 slightly arcuate above the eyes. The basal portion carries 9 teeth, three of which are on 

 the cephalothorax, and the ninth tooth reaches to the distal end of the penultimate joint 

 of the antennular peduncles; then follows a smooth interspace, 5 mm. long, finally two 

 smaller apical teeth close to the extremity. Tlie first and the second teeth are a little 

 more distant from each other than the following. The inferior margin is provided with 

 6 teeth, the first immediately before the eyes, the following increase ia length, and the 

 sixth is situated below the penultimate apical tooth of the ujDper margin. The rostrum 

 resembles that of the female from the River Prah, but is more strongly turned upward 

 and has a more slender form. The first legs overreach the scales only by the length of 

 their fingers; the carpus is 7'5 mm., the hand 3'66 mm. long. 



Though this specimen is but little smaller than the male from Liberia, the legs of the 

 second pair are considerably shorter, and have tlie same form and length as in the 

 females. This fact, however, is often observed in the males of this genus. As regards 

 the measurements of the right leg, I refer to the Table ; they nearly agree with those of 

 the female from the River Prah. The whole leg is somewhat shorter than the animal 

 and fully agrees in its other characters with tliat female. I will only add that the merus 



