70 



The statements of these farmers, confirmed by my own observations, 

 show that the eggs are deposited, in great part, in a sandy-clay knoll 

 thinly clothed with grass and of but few acres area, from which the 

 locusts migrate to all parts of the valley. 



]So effort has been made here to control the locusts except an inef- 

 fectual attempt to use a large flock of turkies for this purpose, but it 

 would seem, in view of the limited area in which eggs are placed, to be 

 a comparatively easy matter to keep them iu subjection by the use of 

 the measures already given. 



The Locust Mite, Dipterous larvae, and Hair-worms were found to 

 infest the locust here in somewhat less numbers than at Franklin. 



THE IMPORTED AUSTRALIAN LADY-BIRD. 



Yedolia cardinalis. 

 By D. W. Coquillett, Los Angeles, Cal. 



In his annual report for the year 1888, published in the report of 

 this Department for that year, Professor Riley has given an account of 

 " The Importation of Parasites and Predaceous Insects from Australia," 

 containing an account of the importation by the Department of certain 

 kinds of insects which naturally prey upon the Fluted or Cottony- 

 cushion Scale (Icerya purchasi, Maskell). At the time of writing the 

 above report only a few specimens of the black and red Lady-bird had 

 been received, so that very little could be said in regard to its habits 

 and early stages. As I have now carefully worked them out, I give 

 herewith a brief account of them, in accordance with directions from 

 the Division of Entomology. 



EARLY STAGES. 



Egg. — Elongate-ovate, or rarely elongate ellipsoidal, its width never 

 more than one-half its length; very rough, or scabrous; deep orange- 

 red ; length, one-half millimeter. 



Larva (first stage). — Dark orange-red ; first segment with two small 

 black warts placed subdorsally, and with two long whitish bristles on 

 each side ; segments two to eleven each, with three dark-brown warts 

 each side — those on segments two and three situated in the subdorsal, 

 supra stigmatal, and stigmatal regions, while those on the remaining 

 segments are situated in the dorsal, supra-stigmatal, and stigmatal re- 

 gions; each of those in the stigmatal region bears two long whitish 

 bristles, while each of the others bears a single shorter whitish bristle, 

 those on the eleventh segment the longest; head about five-sixths as 

 wide as the first segment and slightly darker, its sides blackish ; six 

 thoracic legs orange-red, the tibiae darker; last segment furnished with 

 a retractile proleg. 



