294 ROBERTS, Birds of the Granite Belt [Tst^ApHi" 



.icanthiza pusilla. — Insects: Coleoptera, several plant-eating 

 beetles (Chrysomelidae) ; Orthoptera, one or more small earwigs 

 (Forficulidae), one small cockroach (arboreal species) ; Homop- 

 tera, leafhoppers Jassidae, Delphacidae (numerous fragments), 

 one small Cicada (Melampsalta sp. ?) ; Lepidoptera, four or more 

 small moth caterpillars; Thysanoptera, one Thrip (Idolothrips 

 spectans). Vegetable Matter: Fragments of flowers. Seeds: 

 One or two seeds of weeds. 



Geobasileus chrysorrhous. — Insects : Coleoptera, two Tene- 

 brionid beetles, large quantity of fragment of small ground 

 w^eevils (Curculionidae) ; Lepidoptera, two or more small moth 

 caterpillars ; Homoptera, two or more Jassidae and numerous 

 Psyllid fragments ; Hymenoptera, several small ants, species un- 

 determined ; Orthoi)tera, fragments of immature grasshopper 

 (CEcanthus sp.) ; Hetero])tera, one spined i>lant bug (Tingidae) ; 

 Diptera, several wings and fragments undeterminable, Arach- 

 nida : One spider. Vegetable Matter : None. Seeds : None. 



Geobasileus rcauloides. — Insects : Coleoptera, one small Longi- 

 com beetle, three or more weevils ; Hymenoptera, eight or more 

 small ants; Lepidoptera, three or more Moth larvae; Hemiptera, 

 small bug, fragmentary condition; Homoptera, leafhopper (Ful- 

 gorid sp.). Vegetable Matter: None. Seeds: None. 



Gerygone alboffularis. — Insects: Coleoptera, one Staphylinid 

 beetle, three small weevils, one fairly large Chrysomelid beetle, 

 one Longicorn beetle, one Tenebrionid beetle; Lepidoptera, 

 several moth caterpillars in fragments; Orthoptera, one earwig; 

 Hymenoptera, numerous small wasps in fragments, one large 

 flying ant and large quantity of small ants ; Homoptera, numerous 

 leafhopper fragments ; Diptera, a few wings and fragments un- 

 determinable. Vegetable Matter : None. Seeds : None. 



Clithonicola sa(jittata. — Insects: Coleoptera. one weevil (Amy- 

 rictinae), one plant-eating beetle (Chrysomelid), large quantity 

 of beetle fragments; Lepidoptera. three or more small cater- 

 pillars; Homoptera. leafhoppers. Jassids, etc.. one small cicada, 

 scale insect fragments, one mealy bug (Coccid) ; Hymenoptera, 

 one small ant; Orthoi)tera, one immature grasshopper. Vegetable 

 Matter : A fair quantity. Seeds : A few. 



As we are of opinion that it is probable, almost to the extent 

 of a certainty, that difi^erent species of Passerine would not inter- 

 breed under any native conditions, and that sub-.sjiecies of the 

 same type should do so if given suitable surroundings, the matter 

 of nesting habits seems most important, Tho.se building dis- 

 similar nests could not be of the same .species, whilst those build- 

 ing similar nests might be. Approaching the matter from this 

 standpoint no detail is apparently too trivial to be overlooked. 



In Mathews Birds of Australia, vol. ix., Pusilla is the first 

 Acanthiza treated, and this .species is illustrated on three plates 



