204 Mr. Templeton’s Description of 
Corpus elongatum, semicylindricum, segmentis 13 divisum ; pri- 
rauni maximum, 11 et 12 valde angusta. Cauda, aut cor- 
poris ultimum segmentum, mediocriter lata, setis duobus 
articulatis spinosis instructa. 
Pedes 14 : par primum, crassum, cheliferum, multo majus; paria 
sequentia elongata, subsimilia, unguiculata, ungue 2di pau- 
lulum attenuati paris, longiore. 
Pedes natantes ut in Squillis, e segmentis 8, 9, 10 orientes. 
Species unica. Zeuxo Westnoodiana. 
Body greyish, a rhomboidal black macula between and behind 
the eyes ; another very large, mottled interiorly, with the an- 
terior side greatest, occupying nearly the posterior mesial 
half of the cephalic ring. The second ring with an elongate 
triangular dash on each side, the apices almost meeting in the 
centre. The succeeding rings with the sides mottled, and a 
rectangular black spot on the middle part of each posteriorly. 
Length 0‘14 inch. 
Among marine plants near Black River, Mauritius. 
The cephalic ring of this minute crustaceous animal is somewhat 
conic in its form, being considerably dilated posteriorly ; it has a 
minute rostrum projecting between the superior antennae, and a 
hollow on each side exterior to those antennae, in which rests a small 
articulated plate, carrying the jet black apparently compound eye. 
The exterior surface of this minute plate is arched, and the eye 
seems immersed in it, or at least the membranous covering of the 
plate covers also the eye. The antennae are four, rather more 
than half as long as the cephalic ring, subequal, the superior com- 
posed of three joints ; the first of which is large and robust, spiny 
or hairy, dilated near its base, and arising from an excavation on 
each side of the rostrum, a little superior to the eye. The second 
joint is very small, a little longer than broad, and encircled at its 
extremity with a fringe of hairs ; the third is minute, conical, the 
truncate extremity surmounted by four or five linear blunt styles, 
above which project a few long spines or hairs. The inferior an- 
tennae are nearly as long as the superior, and arise immediately 
beneath the superior : they are five-jointed ; the first joint short 
and rather thick ; the second very short ; third more slender and 
as long as the first, with a few long hairs descending from its 
apex ; fourth joint much smaller than the last, but similar in form, 
and also armed with one or two long hairs ; fifth joint excessively 
minute ; its apex margined with blunt spines, from whose centre 
proceed three or four very long and acuminated spines or hairs. 
