PLATE XXI. 
Penaeus caeruleus, n. sp. 
A.n.s. Lateral view of a specimen, natural size; the apices of the rostrum 
and telson a little imperfect. The magnified details are from this 
specimen, with the exceptions indicated below. 
oc. Outline of the eye. 
m., Mx. I, mxp. 2, mxp. 3. Mandible, first maxilla, second and third maxilli- 
peds. 
prp. I, prp. 3. First and third peraeopods, with seta and epipod of the 
. latter more highly magnified. 
plp. 1. First pleopod with petasma, more highly magnified than the peraeo- 
pods. 
pet. Petasma of the first pleopod, in lateral view, greatly magnified. 
B. car. Carapace of a smaller specimen, in lateral view, magnified to two 
diameters. 
B. urp., T. Telson and uropods of the last mentioned specimen, in dersal 
view, similarly magnified. 
C. th. Thelycum of a third specimen, female, in ventral view. 
PLATE XXII BIS. 
Penaeus caeruleus, n. sp. 
The figures correspond with the natural size of the specimen. 
A dorsal view is given of the carapace, showing also the eyes, the first 
antennae, and the second antennae as far as the earlier joints of the 
flagella. 
The tail-fan, composed of the telson and uropods, is also shown in dorsal 
view. 
In the complete lateral view of the specimen the fiagella of both members of 
the second antennae are exhibited, but of the other paired appendages 
in each case only one member appears. 
rhe colouring, though copied from a preserved specimen, is believed to agree 
with that of the living animal, 
