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CRUSTACEA OF THE MERGUI ARCHIPELAGO. 305 
the median dorsal groove of the telson, the notch at the basal joint of 
the uropoda, and the emargination on the external uroramus. Fig. 3. 
A part of the leg of the fifth pair of the male, x 4, showing the 
“‘ processus” near the proximal end of the meropodite. Fig. 4. A 
part of the leg of the fourth pair of the male, x 4, showing the 
enlarged meropodite. Fig. 5. Ventral plate of the female A, x 4. 
Fig. 6. Ventral plate of the female B, x 4, with the bases of the legs 
of the fifth pair. Fig. 7. Rostrum of the male, lateral view, x 4, 
with the hepatic spine, the antennal spine, and the supraocular tooth. 
Fig. 8. Petasma, view of the posterior surface, presenting also the 
bases of the anterior abdominal legs, x 4. Fig. 9.-A part of the lee 
of the fourth pair of the female, x 3, showing the simple meropodite. 
Fig. 10. A part of the leg of the fifth pair of the female A, showing 
the enlarged ischiopodite, x 4. Fig. 11. A part of the leg of the fifth 
pair of the female B, x 4, showing the simple ischiopodite.—The 
impressed parts of the surface of the cephalothorax and of the abdomen, 
which are pubescent, are somewhat shaded. 
LINN. JOURN.-—ZOOLOGY, VOL. XXIf. 20 
