260 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
The last pair of legs of this species are very characteristic, 
and more resemble those of the proper Gebig, the propodites 
being slender and not compressed. They are, moreover, sub- 
cheliform, the inferior margin of each propodite being pro- 
longed into an acute immobile finger, which, however, is much 
shorter than the dactylopodite. Their somewhat thickened 
meropodites are even a little shorter than each of the two fol- 
lowing joints, and the carpopodites are nearly as long as the 
propodites, whereas they are almost twice as long as the latter 
in G. Darwinwt. The dactylopodites measure nearly half the 
length of the propodites. The meropodites, carpopodites, and 
propodites of these legs are a little curved; the meropodites are 
glabrous, the carpopodites clothed with a tuft of hairs at the 
distal ends of their upper margins, and the propodites are clothed 
with hairs in the same manner as the legs of the third and fourth 
pairs. 
The rami of the uropoda are broad, and resemble those of 
G. Darwinii. They are as long as the terminal segment of 
the postabdomen, and their posterior margin, like the external 
margin of the outer rami, is fringed with hairs; the upper surfaces 
of the outer rami present two longitudinal ridges proceeding 
from the base of the joint to the posterior margin, and that of 
the inner rami one ridge. 
The largest specimen, a male, is 39 millim. long from the 
tip of the front to the posterior margin of the terminal post- 
abdominal segment ; the cephalothorax of this specimen is 123 
millim. long, and the chelipedes measure 19 millim. 
Family THALASSINID®. 
Genus THatasstna, Latr. 
145. THatasstna ANOMALA, Herbst. 
Cancer anomalus, Herbst, Krabben und Krebse, ui. p. 45, Taf. 1xu. 
(1803). 
Thalassina scorpionides, Latreilie, Gen. Crust. et Ins.1. p. 51 (1807), 
nee Guérin et Milne-Edwards.—See Steenstrup et Liitken, Videnska- 
belige Meddelelser, p. 257. 
One old specimen was collected at Mergui, where the species 
is very common. In it the distance of the tip of the beak to 
