THE CANADIAN ENTOMOLOGIST. 79 



in many places confluent, and the individual scales overlap one another, 

 or are contorted by being squeezed together closely, or even appear to 

 lie one over the other, and where the male scale insects crowd together 

 these spots present a more finely chaffy appearance. As it will occur 

 quite up to the tips of the branches, the complete destruction of any tree 

 subjected to the attack of the peach scale, and owing to it, is only a mat- 

 ter of time. When already in patches on the branchlets prior to the 

 formation of the leaves and fruit, in early spring, it does not hinder their 

 formation ; the leaves are green as usual, the fruit sets, but is soon re- 

 tarded in its growth and shrivels up." Writing me under date of Novem- 

 ber yth, 1897, however, Mr. Tryon has this to say of its present condi- 

 tion in Queensland : " This Coccid is far from being generally distributed 

 in Queensland, and nowhere have I observed it to act very prejudicially 

 to the trees that it attacks." 



In March, 1897, ^ consignment of Japan Flowering Cherry, both the 

 single and double varieties, was received direct from Japan by the im- 

 porters in Ohio. A few months later, it was discovered that some of the 

 double flowering variety were infested by a species of scale insect, which 

 proved to belong to this species, and which had not before been known 

 in Ohio. A thorough spraying with kerosene emulsion did nothing more 

 than to check its increase, and did not exterminate it. (It has since been 

 found on Prunus paiidula and P. pseudo-ceraceus, also recently from 

 Japan.) 



The distribution of Diaspis amy.gdali and its food plants are also of 

 interest. Mr. T. D. A. Cockerell has given an extended list of the food 

 plants of the species*, and others have since been reported. It is now 

 known to attack Hibiscus ( Abdmoschus) esailenius, L., and Gossypium 

 barbadense, or Jamaica cotton, about Kingston, Jamaica. Cultivated 

 Pelargoniums ; the grapevine f, dwarf peach and cherry J (cited as 

 Diaspis amygdali, Putnam, in Proc, but correctly in Can. Ent.), on 

 BryopJiyllum calyciiium ; Carica papaya : Persimmon ; Jassimn, in 

 Jamaica; Oleander; Calotropis procera, Capsicum, Argyriea speciosa 

 when under cultivation in Jamaica, also Acanthus, and Cycus media. 

 Mr. E. E. Green found it on Callicarpa lanata and Tylophora asth- 



*Food Plants of Scale Insects (Coccida;), by T. D. A. Cockerell, Proc. U. S. 

 Nat. Mus., Vol. XIX., pp. 725-785, No. 1 122. 



i Townsend, Jour, Inst. Jamaica, 1893, pp. 283, 378. 

 J Cockerell, Can. Ent., 1895, p. 260. 



