78 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
this crest and the upper margin the outer surface of the hands 
is covered with some acute granules and spinules. ' 
The posterior margin of the penultimate joint of the natatory 
legs is provided with some short teeth, asin 7. prymna. Koss- 
mann is doubtless wrong in uniting into a single species all 
Thalamite with eight frontal lobes; but some species, however, 
may prove to be mere varieties of others. 
As regards the figure of Thal. spinimana, published by Prof. 
A. Milne-Edwards, I may observe that the strange form of the 
front of this specimen is, without doubt, abnormal, similar abnor- 
malities having been found by me also in other species of this 
genus. 
Thalamita spinimana has been recorded from the Fiji Islands 
and from New Caledonia, the closely allied and probably identical 
Thal. ceruleipes having been found by the ‘ Novara’ Expedition 
at the Nicobar Islands. 
54. THatamita Dana, Stomps. (PI. IV. figs. 8 & 9.) 
Thalamita crenata, Dana, Unit. States Expl. Exp. 1. p. 282, pl. xvii. 
fig. 7. 
Thalamita Dane, Stimpson, l.c. p. 37 (1858); Alph. Milne-Edwards, 
Archives du Muséum Hist. Nat. 1861, t. x. p. 366, pl. xxx. fig. 1. 
Thalamita Stimpsoni, Alph. Milne- Edwards, l.c. p. 362, pl. xxxv. fig. 4. 
Six specimens (2 ¢, 4 ) were collected—three at Owen Island, 
two at Elphinstone Island, and one at King Island. 
Thalamita Dane is, without doubt, a distinct species, distin- 
guished by many constant and important characters. The internal 
lobes of the upper orbital margin are very depressed and nearly 
straight, differing much, therefore, from those of 7. prymna and 
T. spinimana. The ridge on the basal joint of the outer antenne 
is armed witha row of granules, which are never spinulose. The 
foregoing specimens wholly agree with the description and the 
figure published by Prof. A. Milne-Edwards. The upper surface 
of the carapace and of the legs is densely covered with short hairs. 
In most of the specimens the antero-lateral teeth are nearly equal, 
the fourth and the fifth being, however, a little smaller than the 
anterior. The fourth tooth in this species, however, appears to 
have a somewhat variable length, as has already been mentioned 
by Mr. Miers (Ann. & Mag. Nat. Hist. 5th ser. vol. v. 1880, 
p. 238), so I conclude that Thal. Stimpsoni, A. M.-Edw., is a 
variety of Thal. Dane, differing only from it in the rudimentary 
