Very rare, scarcely ever seen by the Aborigines. Caught by hook, August, 1841. No. 49.--MONACANTHUS.--Not known to the Aborigines. Rays, D. 32; A. 30; C. 12; P. 11. Eye yellow; dorsal spine short. Taken in deep water by Mr. Johnson, off the Commissariat stores, near a sunken rock, in deep water. No. 15.--MONACANTHUS.--Native name, CAUDIEY. "Small leather-jacket" of the sealers. Inhabits deep water, with a rocky bottom; is good to eat. Caught by a net, 18th March, 1841. Dorsal spine toothed behind. No. 31.--MONACANTHUS, or (ALEUTERES, no spinous point of the pelvis visible in figure.--J. R.)--Native name, TABEDUCK. The "yellow leather-jacket" of the sealers. Dorsal spine toothed. D. 33; A. 32; P. 13. Caudal rounded, its rays very strong. Inhabits deep water in rocky places, and is very common. It is esteemed for food by the Aborigines; is much infested by an Isopode named NETTONG, or TOORT, by the natives. This insect inserts its whole body into a pocket by the side of the anus, separated from the gut by a thin membrane. The fish to which the insect adheres are yellow; those which are free from it are of a beautiful purple colour. Caught by hook, 12th May, 1841. CARCHARIDAE. No. 54.--CARCHARIAS (PRIONODON) MELANOPTERUS, Muller and Henle.--Native name, MATCHET. "Common blue shark" of the settlers. Specimen four feet and a half long; have been seen longer. A female had four young alive when taken. Spiracles behind the eyes. Caught by hook, 16th August, 1841. No. 26--CESTRACION PHILIPPI, Mull. and Henle.--Native names, MATCHET, KORLUCK, or QUORLUCK. "Bull-dog-shark" of the sealers. Specimen two feet and a half long. Inhabits rocky shores, and is very sluggish; it does not grow to a very large size. Caught by hook, 6th April, 1841. TRYGONES. No. 38.--UROLOPHUS.--Native name, KEGETUCK or BEBIL. "Young sting-ray" of the sealers. Caught by seine, 4th May, 1841. No. 28.--Near PLATYRHINA.--Native name, PARETT. "Fiddler" of the sealers; Green skate of the settlers. Eye dullish yellow; pupil sea-green, glaring in some lights; teeth transverse, like a file; spiracles two, large, behind the eye, in the same cavity; belly white, terminating at the caudal fin. Very common in the sheltered bays, close in shore among the weeds. Not eaten by the Aborigines, who greatly abhor them, as they do also the sting-ray. Specimen two feet nine inches and a half long. * * * * * (D.) DESCRIPTION AND FIGURES OF FOUR NEW SPECIES OF AUSTRALIAN INSECTS. BY ADAM WHITE, ESQ. M.E.S. The four insects here figured and described are, as far as I am aware, new. Petasida, and Tettigarcta are interesting in the shape of the Thorax, differing widely from that in any of the allied genera, while the new species of Eurybrachys and Chrysopa are striking from their colouring and marks. PETASIDA EPHIPPIGERA, pl. 4. fig. 1.