FEOM THE INDO-PACIFIC AND WEST AFRICA. 319 



posterior to it only two teelh are recognizable, one of which is conical, the other low 

 and rounded. The other hand agrees with that described. 



In the youngest female (No. 17) finally, which is 21 mm. long, the apical part of the 

 rostrum (fig. 71) is slightly turned upward and extends just a little beyond the antennal 

 scales. The legs of the first pair reach to the distal end of the scaphocerites. The 

 carpus is 2 mm. long, and 0'22 mm. tliick at the distal end ; the hand is I'lG mm. long, 

 the palm measuring 062 mm., the fingers 0-54< mm., and the palm is 0"25 mm. broad. 

 The second legs (fig. 72) are almost equal and their wrists reach almost to the end of 

 the scales, so that the fingers and two-thirds of the palm jiroject beyond the scales. 

 In both chelge the cutting-edge of the immobile finger extends along about two-thirds 

 of the finger, that of the dactylus is somewhat shorter ; at the end of each cutting- 

 edge there is a well-developed conical tooth and, between it and the articulation, on each 

 finger two other teeth that are a little smaller, especially those of the immobile finger 

 (fig. 73). 



Pal^mon (Mackobkachium ?) sp. (Plate 20. figs. 75-80.) 



One male and one egg-hearing female from Catumbella, near Benguella. 



I describe first the female, because it is still provided with both legs of the second 

 pair. The specimen is 46 mm. long from tip of rostrum to the end of the telson. The 

 eggs are very numerous and small. The rostrum (fig. 75) is short, a little arcuate above 

 the eyes, then inclined downward, but the apex is very slightly turned upward again ; 

 the rostrum extends a little beyond the distal end of the penultimate joint of the 

 upper antennae. It is armed above with 11 rather strong teeth, that reach the distal 

 extremity, four of them standing on the cephalothorax, the fifth just above the orbital 

 margin ; the first tooth, a little more distant from the second than the following, is 

 situated twice as far from the posterior margin of the cephalothorax as from the 

 anterior. The lower margin bears two quite small teeth immediately in fi'ont of the eyes. 

 The cephalothorax is smooth. The hepatic spine is smaller than the antennal one and 

 situated behind and rather far below the latter. Both in the female and in the male the 

 extremity of the telson (fig. 76) is triangular, but the acute tip itself is appai*ently worn 

 ofi", so that the extremity appears to be truncate (fig. 77) ; on each side one observes 

 the usual tw'o spines, of which the inner reaches beyond the truncate tip. The anterior 

 pair of spinulcs is situated just behind the middle. The outer footjaws project with 

 their terminal joint beyond the peduncles of the external antenna}. 



The legs of the first pair (fig. 78) extend with their chekc beyond the distal end of 

 the antennal scales; the carpus is 4.8 mm. long; the hands, the fingers of which are 

 distinctly somewhat shorter than the palm, measure 35 mm. The carjius is 07'1 mm. 

 thick at its distal end, this being almost one-sixth of its length, so that it has a rather 

 stout shape. 



The legs of the second pair are equal (fig. 79) and 28 mm. lung, a little more than 

 half the length of the body ; they project for a small part of their carpus beyond the 

 antennal scales. The merus of the left leg is 5 mm. long and 1'75 mm. thick anteriorly; 

 the carpus is 4>"75 mm. long and 2 mm. thick at the distal end ; the palm is 5*5 mm. long, 



