491 



and jungle soils, in canefields or under grasses. Pupae were found at 

 a depth of from 2 to 3| feet during the second week in June. The 

 emergence of adults has been recorded from December to March. 

 Several other unnamed species of LepidioUi were found, the life-histories 

 of which are imperfectly knowii. L. darwini has been taken from 

 Eiicah/pfiis. Adults of Isodon pnncticoUis were found in February 

 and March. Dasygnalhus australis and D. dejeani are distributed 

 throughout the cane and forest lands near Gordonvale, although in 

 small numbers. The average length of the egg stage of Cacochroa 

 decorticata is about 13 days. The life-cycle is completed in one year. 

 The larvae occur more abundantly around the roots of Imperata 

 arundinacea than in cane-fields. They are capable of hving in dry 

 soil for many weeks. Pupae have not been recorded in the field, but 

 the duration of this stage, in captivity, was a month. The chief host 

 trees are Eucalyptus sp. and Melaleuca. The hfe-cycle of Xylotrupes 

 australicus lasts for more than a year. Pupae were obtained, in breed- 

 ing cages, from November to February, the pupal stage lasting less 

 than seven weeks. Adults may be found in large numbers on Poinciana. 

 The larvae habitually feed on decomposing vegetable matter in the 

 soil. Calloodes gray anus inhabits the almost pure sand of the river- 

 bed at Gordonvale. A single pupa was found in October. Adults 

 were captured from January to March. The known food-plants are 

 Melaleuca and bloodwood {Eucalyptus corymbosa & E. eximia). The 

 larvae of Repsimus aeneus have been recorded several times in cane- 

 fields. Anoplognathus hoisduvali occurs in the larval stage throughout 

 the coast districts of Queensland in clay, black loam, or sandy loam, 

 in forest, on various grasses and in cane-fields. The life-cycle occu- 

 pies more than one year. Pupae were found at depths varying 

 from 6 inches to 2 feet. Adults were obtained in canefields in October, 

 November and December, and in the forest from October to March. 

 The adults feed almost entirely on Eucalyptus plafyphylla, which is 

 often defoliated ; E. tereifoUa is sometimes attacked. Anoniala 

 antiqua {auslralasiae), Pentodon australe, Mastochilus australasiae, 

 Cladognatlms torrensis, Neso planicollis, Liparetrus atriceps, Setnanop- 

 terus depressiuscidus and Horonotus optatus were obtained in small 

 numbers. Their life-histories are incompletely known. 



GuRNEY (W. B.). Some Insect Pests of Apples and Pears. — Agric. 

 Gaz. New South Wales, Sydney, xxvi, part 4, pp. 303-312, 2 plates. 



Thrips tabaci was very abundant during the spring and early summer 

 of 1913-14, especially in the Bathurst district, where fruit blossoms 

 were attacked. The insect first appeared in this district late in 

 September and increased rapidly in numbers during the first week 

 in October. From the fruit blossoms, the pest spread to garden 

 flowers and tomatoes, serious damage, in some cases, being done to 

 the crops. Aspidiotus pemiciosus has been found on deciduous 

 orchard trees. LepidosapJies ulmi [Mytilaspis poniorum) occurred on 

 apple and pear trees. The eggs hatch in October and November, 

 when the blossoming is over. The adult stage is reached in from 2 to 3 

 months. There are generally two generations during the year. The 

 larvae of the weevil, Leptops hopei, the apple-root borer, attack the 



