BY H. RAWES WHITTELL, ESQ. 33 therein, and these cells were sub-divided as I had witnessed in the first instance. There is no possibility of mistaking the ova, that of Larrada Australis, being only about half the size of that of Pelopoeus Icetus. The Larrada does not go to the river for the material used in subdividing the cell, but takes it from any convenient part of the nest it has attacked, moistening it with a secretion of its own, it also, when at work, emits the same sound as Pelopoeus kttus, but so faintly as to be only distinguished at very close quarters. I could not discover what was done with the ovum of Pelopoeus but I believe it is devoured by the Larrada before it deposits its own. If it were thrown out of the cell I should have seen it done I think, and it was certainly not in any of the cells I then examined, so that the only way it could be disposed of is as I have suggested. If it is eaten by Larrada Australis, what pur-pose does this serve, it is surely not the natural food of this insect 1 The locality from which these specimens came, and where my observations were made, is situated in about 31° 30 ' south latitude, and longitude about 143° 30 ; east, and about six miles from the town of Wilcannia on the Darling Eiver. On the Voracity of a species of Heterostoma. By H. Rawes Whittell, Esq. On the 18th September, 1879, while insect hunting, 1 turned over a dead log, and beheld to my surprise a lizard ( Diplodac tyhts), held fast by a centipede of the genus Heterostoma, which was eating it alive. Neither seemed in any way disturbed by my intrusion. I sat down to watch results, and occasionally stirred up the Diplodactylus with a stick, which caused it to make feeble and futile efforts to release itself. c
BioStor
