218 Mr. E. J. Miers on Crustacea from 
tinguished by the greater prominence of the submedian frontal 
teeth, more convex and tuberculated carapace, with longer 
lateral epibranchial spmes, &c. From Neptunus marginatus, 
A. M.-Edwards, which inhabits the Gaboon coast, it is at 
once distinguished by the tuberculated carapace and the ex- 
istence of an additional spine on the upper margin of the 
palm; and from NV. vocans, A. M.-Edwards, from the Cape- 
Verd Islands, by the form of the frontal teeth and the absence 
of a spine at the postero-lateral angles of the carapace. 
N. anceps, Saussure*, of which there is a specimen from 
Martinique in the Museum, has the carapace much less tuber- 
culated and differently shaped antero-lateral marginal teeth, 
&e. 
Thalamita integra, vay. africana, n. 
This designation is proposed for several Thalamite in the 
collection, which scarcely differ from typical specimens of 
Thalamita integra, except in having the lateral lobes of the 
front shorter than the median lobes. Asis usualin 7’ cnéegra, 
the fourth lateral marginal spine is rudimentary, the basal 
antennal joint is armed with a smooth and entire crest, and the 
penultimate joint of the fifth leg bears traces of very minute 
denticulations. The carapace is somewhat pubescent; the 
armature of the chelipedes closely resembles that of the typical 
T. integra. ‘The fact of Thalamuta integra being an Oriental 
species and not occurring (as far as is known) on the west 
African coasts, renders it possible that the specimens from 
Goree Island may belong to a distinct species; but a larger 
series is required to determine the point with certainty. 
There are in the British Museum two small specimens from 
the Canaries (2. MacAndrew, Esq.) which belong to the 
new variety. 
Gontosoma Millerii. © 
Goniosoma Millerii, A. M.-Edwards, Nouy. Arch. Mus. Hist. Nat. 
iv. p. 54, pl. xviii. figs. 1-3 (1869). 
Here are referred two small examples, males; the larger 
measures little more than 5 lines (11 millim.) in length, and 
about 7 lines (15 millim.) in breadth. The small denticles 
between the larger antero-lateral teeth are perfectly distin- 
guishable, although very small; the frontal teeth, although 
broad and obtuse, are scarcely as much truncated as in the 
figure above cited. In the smaller example, length only 
34 lines (little over 7 millim.), the denticles of the antero- 
* Mém. Soc. Phys. et Hist. Nat. Genéve, xiv, p.434, pl. ii. fig. 11 
(1858), 
