Mr. F. P. Pascoe on some new Coleoptera. 4G1 pair of feet, and that the outer lamina of the caudal fin is entire ; nevertheless, even here two perfectly different forras 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, Trypma, Scytoleptus, Callianidea, and Callisea; the others, Glaucothoe, Calliadne, Laomedia, Gehia, 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 Glaucothoe also probably belong here. There then remain Scytoleptus, Laomedia, Calliadne, Trypaa, Gehia, Callianidea, and Callisea, which possess neither squama nor armiger. Neither the characters of the cheliferous feet nor those of the external antennse, however, unite the genera most nearly allied in their external conformatioo ; but the relation of the pedun-culated eyes to the forehead and its process furnishes a more accordant division. In Axius, 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 Gehiina. The others, namely, Glaucothoe, Callianassa, Thalassina, Trypcea, 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, Gehiina, and llialassinina. L. — On some new Coleoptera from Lizard Island, North-eastern Australia. By Francis P. Pascoe, F.L.S. &c. Lizard Island is one of the group forming the Great Barrier lleef on the north-east coast of Australia, in (about) 14<° S. lat., 145° E. 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 insect life than could have been anticipated. Of course a collection so formed cannot justify us in drawing any very definite conclusions ; but it is