22 



hundred and fifty larva 1 of various sizes were collected. Tbey were at 

 this time all spun up and to all appearances feeding but little. Two 

 days were spent in getting a lot of Scymnodes Koebelei Blackb., an insert 

 preying upon Ghionaspis in Australia. This may also feed here upon 

 the Black Scale. 



With these I left Sydney on July 11,1892. and all insects brought to 

 San Francisco, where I arrived August 5, 1892, were, with the excep- 

 tion of those from Fiji, in a very healthy condition and were liberated 

 upon the proper scale insects. 



The Thctipochares, not having been kept on ice, began to issue at sea, 

 July 24, ami during the night of July 29, the ants killed a half dozen. 

 Fresh food was given at Honolulu, but no eggs were found in the jar 

 when liberated at Haywards, CaL, August 6, 1892. 



DESCRIPTION OF SPECIES. 



I will now give a general account of each species separately, at the 

 same time stating upon what coccids the insects were found feeding 

 and upon which of our scales they may be expected to feed, as also 

 such other notes as may be of interest. 



INSECTS FEEDING ON COCCIDS. 



Coccinclla arcuata Fabr. — This will probably prove one of the most beneficial 

 of all tbe species iu this group met with, as its habits are so various. I first met this 

 insect in numbers, and in all stages, on January 10, 1892, on the Richmond River, 

 New South Wales, feeding upon Lecanium filicum Boisd., on a fern, Lomaria sp., 

 which was growing in a damp place in the woods. Quite a number of these were . 

 forwarded to Mr. Coquillett. Again, on April 6-11, 1892, the insect in all stages 

 was found at Toowooinba, Queensland, in a few specimens only, feeding upon orange 

 aphis. These last specimens, if I remember right, were sent to Hon. Ellwood Cooper, 

 who liberated the same on arrival. On June 19, 1892, the very same insect was 

 found quite numerous at Levuca, Fiji, feeding in all stages upon a species of 

 Aleurodes, infesting the taro leaves (Colocasia sp.). Mr. Crotch in "Revision of 

 Coccinellidae," gives the following localities of the species: China. Philippines, 

 Singapore, Java, Capo York, New Caledonia, and (doubtful) Cape of Good Hope. 

 The insect would prove valuable with us in feeding upon all the Aphidea, Black 

 Scale, in earlier stages no doubt, JJiuroilts, and very likely PsyllidsB and leaf-hop- 

 pers as well. 



Coccinella conformis Boisd. — A very common insect in Australia, where it feeds 

 upon all the various Aphidce, and it may become valuable with us in some Localities, 

 especially the drier parts, in the destruction of the Woolly Aphis (Schizoneura lanigera 

 Hausmann), as well as in feeding upon the earlier stages of the black scales. The 

 observations made upon this insect on this as well as on the former trip to Australia 

 lead m<- to this conclusion. 1 have seen numerous apple trees at Adelaide entiivly 

 cleaned of the- Woolly Aphis, and so thorough is their work that no trace of the Aphis 

 is left. Mr. Tepper also informed me at the time that when these insects begin 

 their work upon the Woolly Aphis they never rest until every single One is devoured. 

 I liai e Been a large apple orchard mar ( last leman, Victoria, on my former trip, which 

 had been badly infested and about half of the orchard from one side where these 

 insects had beeu at work was entirely cleaned by them. The recent observations 

 in New South Wales and Queensland, however, speak not so favorably for these in- 

 as such an effective enemy to the Schizoneura; it was found in both places 



