318 DK. J. G. DE MAN ON SPECIES OF PAL^MON 



the basal part is, as usual, very slightly arcuate. Two-thirds of the terminal joint of 

 the external maxillipedes extend beyond the peduncles of the external antennae. The 

 le^-s of the first pair extend beyond the scaphocerites for the distal fifth of their wrist. 

 The carpus is 5 mm. long, and 052 mm. thick at the distal end ; the hand is 272 mm. 

 long, the palm measuring 1-56 mm., the fingers 116 mm., and the palm is 0-56 mm. 

 broad. The larger leg of the second pair (fig. 68) extends almost with half the carpus 

 beyond the scales, the shorter leg with only the hand. The cutting-ed^^e (fig. 69) of the 

 immobile finger extends along three-fourths of its length, but it is somewhat shorter 

 on the dactylus; the dactylus bears three low and obtuse teeth of equal size posterior to 

 the somewhat larger conical tooth at the extremity of the cutting-edge ; on the immobile 

 finger, how ever, the inner margin runs somewhat irregularly between the distal tooth and 

 the articulation, but distinct teeth are not distinguishable. The fingers of the shorter leg 

 (fig. 70) present the same characters, but the teeth at the extremity of the cutting-edges 

 are rudimentary. The legs of the third pair overreach the scaphocerites with half their 

 dactylopodites. 



Though the Catumbella specimens are all young or even very young, still there is one 

 ova-bearing female amongst them. This specimen is 40 mm. long ; the eggs are very 

 nunlerous, about 0"5 mm. long and a little less broad. The rostrum, which reaches to the 

 end of the scales, is very sliglitly arcuate above the eyes, and the acute tip is somewhat 

 turned upward. The upper margin is armed with 16 acute teeth besides the two apical 

 ones ; the fifth tooth stands just above the orbital margin, and the two apical teeth, of 

 which the anterior is much the smallest, are situated on that distal part which is slightly 

 turned upward. The posterior apical tooth is a little more distant from the preceding 

 than the latter are from one another. The inferior margin bears five teeth. 



The chelae of the first pair of legs extend beyond the distal end of the scaphocerites ; 

 they are 266 mm. long, the carpus 4-5 mm. Only the right leg of the second pair is 

 present, the carpus reaches almost to the end of the antennal scales. The carpus 

 is, as usual, little longer than the merus and than the palm; the fingers, that shut 

 close together, are provided with the usual cutting-edge and a small tooth at the end 

 of it. The dactylus bears, moreover, three small teeth between that tooth and the 

 articulation, the immobile finger also has traces of teeth. This leg is somewhat hairy, 

 and there are a few spinules along the inner margin of the joints, but for the rest it is 

 smooth ; it resembles the smaller leg of the described young males, but it appears to be 

 more slender. 



The legs of the thii'd pair reach to the end of the antennal scales, the following are 

 hardly shorter. The meropodites of the fifth pair are 4-8 mm. long, the propodites 

 5 mm. ; the former are 0"61 mm., the latter 0'42 mm. broad in the middle. 



In the younger female (No. 13), which is 31 mm. long, the legs of the first pair project 

 with their fingers beyond the antennal scales. Those of the second pair are equal and 

 overreach the antennal scales with one-fifth of their carpus. The tooth at the end 

 of the cutting-edge stands, on the immobile finger of the right hand, at a little more 

 than one-fourth of its length from the articulation, and between both one observes three 

 smaller teeth of equal size ; the cutting-edge of the dactylus is somewhat shorter, and 



