304. DE. J. G. DE MAN ON SPECIES OF PAL^MON 



a little shorter and thicker. The spinules on the outer margin of the joints are nauch. 

 thinner and feehler. The three posterior legs agree also with those of that female. In 

 the largest female (No. 5) the legs of the fifth pair exceed the antennal scales by the 

 length of their dactylopodites ; the two preceding pairs are a little shorter, extending 

 only to the end of the scales. Their joints have a smooth, shining surface. 



The numerous specimens from Catumbella, 28 of which have been measured, are 

 almost all very young, and the few of somewhat larger size are, however, younger than 

 the Congo individuals described above. The largest specimen is a male, measuring 

 60 mm. (No. 11 of the Table). The cephalothorax is apiDarently still smooth. The 

 rostrum (PI. 19. fig. 23), which extends to the end of the scales and curves very slightly 

 upwards at the extremity, makes a rare exception to nearly all the other individuals : there 

 are, for instance, no apical teelh on the upper margin; the 10 teeth of the upper margin, 

 the third of which is situated just in front of the anterior margin of the cephalothorax, 

 reach to the distal end of the antenuulary peduncles ; and the space between the tenth 

 tooth and the apex, 2'75 mm. long, is slightly convex, without apical teeth. The first 

 legs overreach the antennal scales by half the palm ; the carpus is 7'5 mm., the hand 

 3'5 mm. long. The left leg of the second pair (the right is wanting) measures two-thirds 

 the length of the animal, and projects almost with two-thirds of the carpus beyond the 

 antennal scales. Though this specimen is but little shorter than the Congo male 

 described above, this leg, however, is much shorter, less stout, and the surface of the 

 joints is almost smooth, the spinules being less distinctly developed ; the measurements, 

 however, present the same proportions, and the fingers are already covered inith the 

 icoolly pubescence characteristic of this species. The other legs agree with those of that 

 male, the fifth pair reaching to the end of the scales. 



In the other specimens the rostrum, which is as long as the scales or projects very little 

 (0'5-l'5 mm.) beyond them, is (jeneraUy more or less turned tipicards at the distal end 

 (fig. 24) ; it is usually armed above with 8, 9, or 10 teeth on the basal portion and with 

 one or two apical teeth, separated by a smooth interspace from the preceding; and when 

 two apical teeth are present, then they are situated close together near the tip of the 

 rostrum or at some distance from one another. The lower margin is armed with 4, 5, or 

 6 teeth. So, e. g., in a male specimen that is 37 mm. long, the rostrum, the formula of 

 which is ^^ and the slender distal end of which curves a little upward, projects slightly 

 beyond the scales for half a millimetre, as in many other individuals. The first legs 

 reach to the end of the antennal scales, and those of the second pair, that are just half 

 as long as the animal, overreach the antennal scales by the whole length of their hand. 

 In another male of exactly the same length the first legs are just as long as in the 

 preceding specimen, but those of the second pair project a fourth of their carpus 

 beyond the scaphocerites ; the legs of the third pair reach as far forward as the terminal 

 spine of the lateral margin of the scales. 



In the largest female (No. 22), which is 58 mm. long, the first legs project only by 

 half the length of their fingers beyond the distal end of the antennal scales ; the chelae, 

 in which the fingers are distinctly longer than the palm, are just half as long as the 

 .slender carpus. The legs of the second pair (PI. 18. fig. 25 and PL 19. fig. 26) are little 



