FKOM THE INDO-PACinC AND WEST AFEICA. 



297 



In the large males the rostrum extends to the middle of the terminal joint of the 

 antennulary peduncles, or to the end of it ; it closely resembles the figure published by 

 Nobili of the type specimen of von Martens, but in some specimens the upper margin is 

 more strongly inclined downward. In these five individuals the upper margin bears five, 

 the lower two teeth, and in all the first tico teeth stand on the cephalothorax. In 

 two males the second tooth of the upper margin is just as long as the following two 

 together (fig. 10), but in the others it is but little longer than the third tooth (fig. 9). 

 In Nobili's figure of the type the second tooth of the lower margin is as far from 

 the first tooth as from the tip, but in the Dinawa males the two teeth stand close 

 together and the second is considerably farther from the tip than from the first tooth. 

 In the young female which is 75 mm. long the rostrum is -5 mm. longer than the 

 peduncles, and it is armed above with 6, below with 3 teeth ; two stand again on the 

 cephalothorax, the second is but little larger than the following, and the foremost tooth 

 is still a little farther from the tip than the length of the fifth and of the sixth tooth 

 taken together. The three teeth of the under margin are smaller than those of the 

 upper ; the third reaches to the distal end of the penultimate joint of the upper pedimcles. 



Only in one single male (fig. 11) the extremity of the telson ends in a short acute 

 median tooth ; the inner of the two spines on each side is twice as long as the outer 

 and extends beyond the median tooth a third of its length. In the other specimens 

 the extremity of the telson is more or less worn ofi", and in the female this segment is 

 wanting. 



In these adult males the outer footjaws project the distal fourth of their penultimate 

 joints beyond the peduncles of the outer antennae. The legs of the first pair extend a 

 third or a fourth of their wrist beyond the scaphocerites. The fingers are just as long 

 as or a little longer than the palm, and the carpus is once and a half as long as the 

 hand. 



Only in one male, which has a length of 130 mm., the first four joints of the right 

 leg of the second pair are still present; the merus, which is 23 mm. long, extends 

 2 mm. beyond the scaphocerites. 



The large left leg of the second pair, which lies loose in the bottle (fig. 12), is 

 152 mm. long, and is consequently somewhat longer than the animal, for it no doubt 

 belonged to one of the five males. It closely agrees with Nobili's figure of the tyjjc, 

 but the palm is comparatively longer and the dactylus appears a little longer than 

 the immobile finger. Measured along the outer margin, the merus appears to be 

 33 mm. long ; looked at from above the proximal extremity that articulates with the 

 ischium, it appears to be 5 mm., the distal end, however, 8 mm. broad. The carpus is 

 22 mm. long and measures, in conformity with the original description, two-thirds of the 

 merus ; viewed from above its proximal extremity, it appears 375 mm broad, and its 

 greatest width, at a fourth of the whole length from the distal end, measures 10 mm. 

 The hand, measured along the outer margin, appears to be 71 mm. long, the palm 

 425 mm., the fingers 285 ; the palm is ttcice as long as the carpus, and the fingers are a 

 little shorter than the merus. The palm is, in the middle of its length, 11 mm. bi-oad 

 and 7 75 mm. thick, being compressed in the proportion of 1 : 1'-l ; in the type specimen 



