128 
on the cardiac region. Three well-marked, compressed 
tubercles, closely succeed each other on the lateral margin be- 
hind the orbit, and behind the last of these are numerous 
smallei' tubercles, which become almost spiniform posteriorly. 
The median regions are slightly raised, and a strong depres- 
sion exists in each hepatic region. 
The upper margin of the orbit is anteriorly thin and 
arcuate, with a longitudinal row of granules near the edge. 
Its posterior end is produced to a slight prominence, the suc- 
ceeding parts — representing the intermediate and post-ocular 
spines — are tuberculiform, compressed in the vertical direc- 
tion, and separated from each other by almost closed fissures^ 
The outer one is similar to those which succeed it on the 
lateral margin, and has a somewhat T-shape. 
The front is strongly declivous, but not vertically de- 
flexed, it is slightly narrower proximally, and faintly crenu- 
late on the sides, terminating in four acute lobes or teeth, 
the outer ones slightly raised along with the lateral margins, 
projecting outwards and slightly upwards, the inner ones pro- 
jecting downwards. 
The basal antennal joint is broad, oblique, and much 
produced at its external distal angle ; this is sub-acute and 
strongly pressed upwards, showing well when viewed from 
above. The outer margin of the ioint is slighty crenulate, 
the second joint is dilated, the third less so. 
The sub-hepatic and pterygostomial regions are tumid 
and coarsely granular. 
The external maxillipeds are like those of Halimus. The 
outer distal angle of the merus is produced and broadly 
rounded, the distal margin not insinuated, and bearing 
minute teeth. 
The pleon of the male is sub-oblong, proximally a little 
constricted, the third, fourth, fifth, and sixth segments are 
sub-equal in length, the terminal segment is rounded to al- 
most semi-circular form. In the female the segments are dis- 
tinct. 
The chelipeds are rather weak in the male, smooth, the 
merus sub-cylindrical, and slightly curved, the carpus is 
rounded above, the palm is scarcely one and a half times as 
long as the carpus, the fingers are shorter than the palm, 
slightly curved, meeting for nearly the whole length of their 
opposable edges, very faintly toothed. 
The ambulatory legs are rather short, the first pair 
scarcely exceeding the length of the chelipeds, the other pairs 
becoming successively shorter, the merus joints are sub-cylin- 
drical, the distal ends of these and the carpal joints are 
nodular, the carpal joints are short, vertically compressed, 
