THE VICTORIAN NATURALIST. 155 Trigonoplax unguiformis, De Haan ... West Channel Hymenosoma ovatus, Stimpson ... All grounds H. rostratum, Haswell ... Do. Anomura. — Cryptodromia lateralis, Gray ... Off Queenscliff Galathea australiensis, Stimpson ... West Channel Munida subrugosa ... Do. Cancellus typus, Milne, Edwards ... Off Queenscliff Eupagurus lacertosus, Henderson ... Do. E. lacertosus, van Nana, Henderson ... Do. Macrura. — Alphaeus socialns, Heller ... All grounds A. villosis, Olivier ... Do. Virbius australiensis, Stimpson ... Off Queenscliff Pandalus leptorhynchus, Stimpson ... Do. Leander intermedius, Stimpson ... All grounds. Mollusca. — The only shells of special interest were : — Conus segravei, Gatliff, the first record for Port Phillip ... Off Quarantine Ground. Erato deniiculata, Pritchard and Gat-liff, found alive ... Do. Nucula grayi ... Near St. Leonard's. DESCRIPTIONS OF SOME MALLOPHAGA FROM AUSTRALIAN BIRDS. By Messrs. S. A. Le Souef and H. Bullen. (Communicated by D. Le Souef, C.M.Z.S.) {Read be. fur e the Field Naturalists' Club of Victoria, 9th December, 1901.) Birds are the hosts of numerous parasitic hemipterous insects belonging to the sub-order Mallophaga. In Europe and America these have been worked out very thoroughly, but in other countries they have received little attention, for, owing to their small size, they easily escape notice. Each family of birds has it own group of parasites, and a family with a wide dis-tribution— as, for instance, the ducks — will have the same parasite on it in all parts of the world with but slight variations in size, the warmer countries generally affording the larger insects ; hence many European species are found on Australian birds. It is interesting to note also that the colour of the parasite seems to depend a great deal upon the colouration of the bird. The classification of the group has been worked out by Leach,
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