_ Mr. F. P. Pascoe on some new Coleoptera. 461 
pair of feet, and that the outer lamina of the caudal fin is entire ; 
nevertheless, even here two perfectly different forms occur, for 
which the characteristic, distinguishing points of organization 
have yet to be ascertained. In many the first two pairs of feet 
are cheliferous, namely, Axius, Calocaris, Callianassa, Trypea, 
Scytoleptus, Callianidea, and Callisea; the others, Glaucothoé, 
Calliadne, Laomedia, Gebia, and Thalassina, have only the first 
pair of feet cheliferous, and these in the last two genera are even 
subcheliform. Taking into consideration the character of the 
outer antenna, Calocaris, Callianassa, and Thalassina may be 
united, as possessing only the armiger; Axius and Glaucothoé 
also probably belong here. There then remain Scytoleptus, 
Laomedia, Calliadne, Trypea, Gebia, Callianidea, and Callisea, 
which possess neither squama nor armiger. 
Neither the characters of the cheliferous feet nor those of the 
external antennz, however, unite the genera most nearly allied 
in their external conformation ; but the relation of the pedun- 
culated eyes to the forehead and its process furnishes a more 
accordant division. In Aaius, Calocaris, Gebia, Scytoleptus, 
Laomedia, and Calliadne, the forehead projects beyond the eyes ; 
and the latter can be concealed under it, as in the Astacina. 
We name this group Gebiina. The others, namely, Glaucothoé, 
Callianassa, Thalassina, Trypea, Callianidea, and Callisea, have 
no such projecting forehead, and their eyes lie free in front of it. 
This latter group we may name Thalassinina. 
The Astacida, consequently, split up into Astacina, Gebina, 
and Thalassinina. 
L.—On some new Coleoptera from Lizard Island, North-eastern 
Australha. By Francis P. Pascon, F.L.S. &e. 
Lizarp Istanp is one of the group forming the Great Barrier 
Reef on the north-east coast of Australia, in (about) 14° S. lat., 
145° EK. long. ; but it is so small that its name is only to be found 
on the larger maps. Calculating in a rough way, it may be 
about 200 miles south and a little east of Cape York, the northern 
extremity of the continent. 
The collection which is the subject of this paper was formed 
by Mr. Macgillivray, and is a small one, so far as the number of 
species is concerned; but if, as is probable, it was obtained 
during the casual stay of his ship for water or wood (perhaps 
only a few hours), the 700 specimens (mostly Coleoptera) which 
it contains indicate a greater amount of imsect life than could 
have been anticipated. Of course a collection so formed cannot 
justify us in drawing any very definite conclusions ; but it is 
