66 
The broad pleon of the female is conspicuously trilobed, with 
the median lobe transversely furrowed between two promin- 
ences, of which the anterior one is subacute in all the segments 
between the first and the telson. The hind margin of the fifth 
segment extends on each side beyond the front margin of the 
sixth, which in turn similarly exceeds the width of the telson, 
the telson itself being much broader than long. The much 
narrower pleon of the male has the first segment narrowly pro- 
duced outward at each side, the following segments being raised 
and transversely furrowed down the centre, much as in the 
female, but with no raised lateral lobes. The third, fourth, 
and fifth segments are ventrally produced into a median tooth, 
and the telson is produced into a still larger acute apical tooth, 
conspicuous when the surrounding sete are removed. 
The corners of the buccal frame are denticulate, and the hind 
margin of the epistome has a little median incision. The 
mandibles are elongate, that on the left having the upper corner 
of the broad cutting edge rounded, that on the right having this 
corner bifid. The palp is pellucid in contrast with the porcel- 
lanous trunk, its third joint folding down within the cutting 
edge. The lobes of the lower lip are thick and soft, when in 
position appearing to be apically pointed. In the first maxillae 
the narrow second joint of the palp is so twisted that it has the 
appearance of being formed of three joints. The second 
maxillae are slight in texture, the lobes except the lowest, 
narrow, the exopod pointed at the lower corner. The first 
maxillipeds have the epipod broad at the base and apically 
very narrow, as figured by Boas for Dromia, but the basal joint 
of the exopod, instead of being at least as long as the adjoining 
twisted and apically-pointed lobe, is so much shorter that the 
linear six-jointed terminal piece does not make up the defi- 
ciency. In the second maxilliped the last three joints stand at 
right angles to the long fourth joint, and are all short 
and broad, rather strongly spined distally. The third maxilli- 
peds have the first joint very short but broad, its outer half 
showing four lobes, between the two outermost of which is 
attached an irregularly narrow epipod; the second joint tri- 
angular, small, the third with inner margin less closely denticu- 
late than in Dromia, the fourth apically truncate but strongly 
excavate at the inner angle, the socket for the fifth joint being 
enlarged by a strongly projecting blunt tooth at the top of 
the inner margin. For following these characters the maxilli- 
ped must be viewed from its dorsal surface. 
The chelipeds are very slightly tuberculated, the most 
conspicuous tubercles being two on the distal border of the 
wrist. The hands widen to the base of the thumb and finger, 
