Fic. 
EXPLANATION OF PLATE XV. 
1.—Palaemon carcinus, Fabr. 
1a.—Cephalic region, ? nat. size (o@ measuring 295 mm.), 
1b.—Cephalic region, # nat. size (2 measuring 232 mm.). 
Ic.—Right chelipede, nearly 2 nat. size (o measuring 295 
mm.). 
1d.—Right chelipede, nearly ? nat. size (@ measuring 232 
mm.). 
te.—Right chelipede of young, nat. size (~ measuring 139 
mim.). 
1f —Caudal fin, nat. size (# measuring 174 mm.). 
Ig.—Apex of telson X 3 (@# measuring 174 mm.). 
. 2.—Palaemon malcolmsonit, Milne-Edw. 
2a.—Cephalic region, nat. size (# measuring IgI mm.). 
2b.—Cephalic region, nat. size (@ measuring 118 mm.). 
2c.—Cephalic region, nat. size (# measuring 87 mm.). 
2d.—Right chelipede, $ nat. size (@ measuring IgI mm.). 
2e.—Right chelipede, nat. size (2 measuring 118 mm.). 
2f.—Right chelipede, nat. size (@# measuring 86 mm.). 
. 3.—Palaemon ide, Heller. 
3a.—Cephalic region, nat. size (@ measuring IIo mm.). 
3b.— Cephalic region, with the four terminal upper rostral 
teeth close together X 2. 
3c.—Cephalic region of 9 , nat. size. 
