320 DE. J. G. DE MAH ON SPECIES OF PAL^MON 



2'25 mm. broad, and 166 mm. thick in the middle; the fingers finally are 5 mm. long. 

 The palm is thus vet^i/ little broader than the carpus. The fingers, about as long as the 

 palm and as the merus, but a little longer than the carj)us, shut close together ; their 

 inner margins (fig. 80) are provided with a sharp cutting-edge, and between it and the 

 articulation each finger is beset with three or four very small teeth. The whole leg is 

 covered with acute spinules, which on the inner margins of the joints are a little longer 

 than elsewhere ; the joints seem, moreover, to be covered with felt and are somewhat 

 hairy. 



Similar to the legs of the first pair, the three posterior pairs are stouter and less 

 slender than those of the young males of P. Olfersii that have been described on p. 315. 

 In the young male of this species, which has a length of 41 mm. (No. 5 of the Table), the 

 meropodites * of the third pair of legs (fig. 74) are 5 mm. long and 0'96 mm. broad in the 

 middle, measured on their outer side, i. e., five times as long as broad ; the propodites 

 are 4'4 mm. long and 0'54 mm. broad in the middle, a little more than eight times as 

 long as broad. In our female (fig. 81), however, the meropodites of the third pair are 

 5*5 mm, long, but 14 mm. thick, so that they are only four times as long as broad, 

 and the propodites, 40 mm. long and 0'7 mm. broad, are hardly sevea times as long as 

 broad. The legs of the third pair reach in the female to the end of the scaphocerites, 

 those of the fourth pair are as long as the outer f ootjaws, and the last pair are still some- 

 what shorter. The three posterior legs are hairy along their upper and lower margins, 

 but for the rest quite smooth. 



The male, that unfortunately has lost its second legs, has exactly the same size as the 

 female. The rostrum fully agrees with that of the female, bearing also 11 teeth above, 

 but it reaches to the middle of the terminal joint of the upper antennaj, and there are 

 three small teeth on the lower margin. The outer footjaws reach almost to the end of 

 the scales, projecting a fifth part of the penultimate joint beyond the lower peduncles. 

 The first legs overreach the antennal scales with half their carpus ; this joint is 55 mm. 

 long and 0"73 mm. thick at the distal end, so that it appears a little more elongate than 

 in the female ; the chelae are 3'8 mm. long. The two following pairs of legs are wanting, 

 those of the fourth pair reach almost to the end of the scales, the last pair is incomplete. 

 I at first thought that the female was that of P. Olfersii, and that the legs of this 

 species were much thicker in the female than in the male. This would, however, be 

 quite an exceptional phenomenon, and this oj^inion was fully refuted by the examination 

 of the male, in which the legs are just as stout and thick as in the iemale. It is therefore 

 to be regretted that the second legs of the male are wanting. I have not succeeded in 

 identifying this species with any yet known, but it bears apjiarently a great resem- 

 blance to P. [Macrobracldum) Iheringi, Ortni., from Brazil. 



* The joints are measured on their outer side, along their upper margin. 



