262 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
The larger specimen is 66 millim. long from the tip of the 
rostrum to the end of the terminal segment of the abdomen. 
The first (2. e. the anterior) joint of the internal antenne mea- 
sures only a third of the length of the second joint, and the latter 
is twice as long as the third or antepenultimate joint. The 
antennal scale is a little longer than the peduncle of the in- 
ternal antenne, the difference in length being almost equal 
to the length of the first (anterior) joint of the antennules; 
the peduncle of the external antenne is also shorter than the 
antennal scale. 
The rostrum is acute and short, not reaching as far forwards as 
the anterior end of the antepenultimate (or third) joint of the anten- 
nules; between the eyes it is very narrow, linear, and carinate, 
being separated from the eyes by rather deep depressions in the 
surface of the carapace. The rostrum extends but little back- 
wards behind the eyes, so that its whole length scarcely mea- 
sures a fifth of the length of the carapace. The outer maxilli- 
peds, clothed with long hairs at their extremities, project much 
beyond the antennal scales, almost reaching to the middle of the 
thickened portion of the outer (upper) flagella of the internal 
antenne. | 
The larger chelipede, situated on the left side and about 
50 millim. long, is more than twice as long as the carapace, but 
shorter than the distance from the tip of rostrum to the end of 
the terminal segment of the abdomen. The upper margin of the 
arm, in both chelipedes, is unarmed, and never presents a spine at 
itsdistal end; the inner margin of the under surface, however, 
presents some small acute teeth along its whole length, the distal . 
oneo fwhich is the longest of all, especialiy on the larger (or left) 
chelipede. The larger hand, which is almost three times as long 
as broad, and which measures 30 millim., is strongly compressed 
laterally, and has a prismatic form. The fingers are distinctly 
shorter than the palm; the mobile finger measures 13 millim., 
and the upper margin of the palm 17 millim., so that the fingers 
are a little shorter than half the length of the whole hand. The 
outer surface of the palm is smooth and glabrous, and has no 
longitudinal crests, although it appears slightly concave at the 
base of the immobile finger. The inner surface of the palm is 
also smooth, but is clothed with some hairs, especially along its 
upper and under margins. The upper margin of the palm is 
