. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 17 bers of locusts traveling south in search of food, nothing being left for them in the interior to feed upon. The country around Quorn was so dry and hot that some Eucalyptus rostrata in a dry river-bed were all the green vegetation that could be seen, and the locusts still met with were unable to feed. Finding the search for Icerya in this district use- less, I returned to Adelaide, where subsequently new colonies were discovered for shipment. In conversation about the grasshoppers en route, a gentleman remark
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 17 bers of locusts traveling south in search of food, nothing being left for them in the interior to feed upon. The country around Quorn was so dry and hot that some Eucalyptus rostrata in a dry river-bed were all the green vegetation that could be seen, and the locusts still met with were unable to feed. Finding the search for Icerya in this district use- less, I returned to Adelaide, where subsequently new colonies were discovered for shipment. In conversation about the grasshoppers en route, a gentleman remarked that only in such unusually dry seasons as the present would the locusts migrate, there being no food left for them in the interior of South Australia. Those around Quorn, he re- marked, left in a southeasterly direction down the valley toward Ade- laide, while those coming from the interior went towards Spencer's Gulf. On my trip I observed them most abundantly about Black Rock traveling south, not in clouds but scattered and never very high^ simi- lar to our CaJoptenus devastator in California in 1885.* November 29 I began collecting material for my second shipment. Already on some of the trees, well exposed to sun, about 90 per cent, of the flies had left the scales, while on the trees in more shady places more than half of the parasites were still within their hosts. Not a single fly was observed, and yet they must have been about in large numbers. Instead of this, I noticed sitting and walking about the scales a peculiar Chalcid t (Fig. 8); this was suspected to be a secondary cW. Fig. S.—Eitryischialestophoni, dorsal and side views—enlarged (after Kiley.) parasite, and during the day I noticed tbem ovipositing in the infested Iceryas. The Lady-birds were at that time quite abundant in egg^ larva, pupa, and imago states, and special pains were taken not to miss any of these during the collecting. The following four days were * As kindly determined by M. Henri de Sau
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