PLATE XXIVa, 
Sergestes bisulcatus, Wood-Mason. 
n.s. Lateral view of specimen, natural size, flagella of antennae wanting. 
a.s., prp. 3, 4, 5. Lateral view of anterior part of another specimen, enlarged 
about two diameters, showing parts of the flagella of the upper antennae, 
and relative extension forward of eyes, scale of second antenna, second 
and third maxillipeds, and the peraeopods. 
r. Rostrum highly magnified. 
prp. 1, 2. Terminal portions of first and second peraeopods, with the pre- 
hensile spines of the first, and the chela of the second still more highly 
magnified. 
PLATE XXIVB. 
Acanthephyra batei, n. sp. 
n.s. Lateral view of specimen, natural size, flagellum of second antenna 
wanting. 
r. Rostrum magnified, lateral view. 
a.i. Second antenna magnified, without the flagellum; with apex of the 
scale more enlarged. 
prp. 1-5.. The five pairs of peraeopods magnified, in their relative positions 
but the base and exopod shown only in prp. 5. The apical joints of 
the chelipeds also shown separately, to make clear the comparative 
length of the fingers. ; 
T., urp. Lateral view of telson and uropod magnified, and dorsal view of 
distal part of telson. 
