.127 



his observations, but he has ascertained that the larva feeds on the 

 eggs of E. coryli, in the same way as that of Anlhribusfasciatus. Each 

 female scale may harbour from 1 to 12 larvae, but even if more than 

 this are present they do not succeed in eating all the eggs. The adults 

 emerije at the end of June and early in July, their ovaries being then 

 still much undeveloped. In Sweden, Germany and Austria M. sylvitts 

 has been recorded from Coccus betuhe-albae, Dalm., C. pruni, and 

 Eulecanium aesadi, KolL, but all these are synonyms of Eidecanium 

 coryli. Rondani's record of it as a parasite of the larvae of Aidax 

 potentillae, ¥., and Anthribns varius is beheved to be incorrect. This 

 paper closes with a series of tables showing the degrees of parasitism 

 of E. coryli by the various species. 



81LVESTRT (F.). Descrizione e Notizie del Ceroplasfes sinensis, D. 

 Guerc. (Hemiptera Coccidae). -Boll. Lab. Zool. Gen. Agrar. R. 

 Scuola Sup. Agric, Portici, xiv, 1920, pp. 3-17, 10 figs. 



This scale was introduced into Italy, probably between 1890 and 1895, 

 possibly on ornamental plants of the genus Muhlenbeckia. It is 

 now found in the south of France, but there appears to be no record 

 of it elsewhere except in China, which seems to be its country of origin. 

 The larvae and adult are described. Much of the information relating 

 to food-plants and life-history has already been dealt with {R.A.E., 

 A, vii, p. 218]. The average number of eggs per female may be taken 

 as 2,000 ; in one case 3,836 were counted. Larvae of the first and 

 second stages are usually found on the upper surface of the leaves. 

 Female third-stage larvae occur on the leaves and on twigs and 

 stems. Those of the fourth stage gradually spread to all the branches. 

 None of the natural enemies hitherto observed [loc. cit.] are of much 

 value and others nnist be sought for in China if the expense of spraying 

 is to be avoided. 



Blackman (M. W.) & Stage (H. H.). Notes on Insects bred from 

 the Bark and Wood of the American Larch. — Tech. Pub. no. 10, 

 N.Y. State Coll. Forestry, Syracuse, N.Y., xviii, no. 4, pt. I, 

 May 1918, pp. 9-115. 9 plates. [Received 15 January 1920.] 



This paper records the results of extensive studies of the insect 

 pests of American larch {Larix laricina). The portion of the tree 

 attacked, the hfe-history and habits of the borers, the parasites and 

 enemies attacking them and the borers associated with each species 

 are discussed. The species dealt with are mainly Coleoptera and 

 include Dendroctonus .simplex, Lee, Polygrapkus rufipennis, Kirby, 

 Scolytus (Eccopfogaster) piceae, Swaine, Crypliirgus pusillus, Gyll., 

 Dryocoetus americamis, Hopk., Dryophthorus americanus. Bedel, 

 Stenoscelis brevis, Boh., Phymatodes dimidiatus, Kirby, Asenmm 

 moestum, Hald., Monochamus {Monohammus) scutellatus. Say, Leptura 

 viitata, Oliv., Leploslylus sexguttatus. Say, Neoclytus hngipes, Kirby, 

 Pogonochaerus mixtus, Hald., Melanophih fulvoguttata, Harr., Chryso- 

 boihris blanchardi, Horn, C. dentipes, Germ., C. sexsignata, Say, 

 Antfiaxia quercata, F., Serropalpus barbatxs, Schall., Urocerus albi- 

 cornis, ¥., Tenebrio tenebriodes, Beau., Adelocera brevicornis, Lee, 

 .and Sirex abboiii, Kirby. 



