30 THE ENTOMOLOGIST. 



49. Lecanium llriodendri, Gmel.* 

 From the synonymous L. tupulifens, Hill, Howard records 

 Leucodesmia typica (' Insect Life,' 1895, p. 404) and CoccopJiagiis 

 fiavoscatellum, Asbm. (Revis. p. 36). 



50. Lecanium caprece, Linn. 

 Eunotus cretaceus, Walk., is recorded from this species by 

 Gaulle (Cat. 103), who also mentions Chiloneuras elegans, Dalm., 

 from a Lecanium on Salix (p. 99). The synonymous L. tilice, 

 Linn., is recorded {l. c. 98) as host of Eucumys ohscura, Dalm., 

 and (p. 99) of Blastothrix sericea, Dalm., while Kawall adds 

 (Stett. Ent. Zeit. 1855, p. 231) Eucoinys scutellata to its para- 

 sites, and Newstead has an interesting note " On the Alteration 

 in the Form of the Scales of Lecanium caused by Internal Para- 

 sites" (Ent. Month. Mag. 1892, p. 267). Both L. alni, Modeer, 

 and L. cssculi, Kollar, belong here; regarding the former, I am 

 only aware of Gaulle's record (Gat. 99) of Apliycus punctipes, 

 Dalm., from it, but the latter is freely parasitized by Microterys 

 chalcostomus, Dalm. (Mayr, Verb. z.-b. Ges. 1875, p. 706), M. 

 Sylvius {I. c.) and Blastothrix schdnherri, Westw. [l. c. p. 699), to 

 which Ashmead (1900, p. 390) adds B. sericea, Dalm. {longi- 

 pennis, How.), a common species both in Europe and Northern 

 America. 



51. Lecanium hesperidum, Linn. 



Gaulle states (Cat. 99) Blastothrix sericea, Dalm., preys upon 

 the " Orange Scale," while in America Howard has recorded 

 Eucomys hicolor and Encyrtus flavus (Eep. Ent. U. S. Agric. 1881, 

 pp. 362-7), Perissopteriis mexicanus, Coccophagus cognatus, C. 

 Jiavoscutellum, Ashm., and C. lecanii. Smith, from it (Eevis. 1895, 

 p. 33, &c.). Ashmead (1900, p. 360) adds Encyrtus hicolor, How., 

 from America, and Aphycus alherti, How., from New South Wales, 

 to the parasites of this species, which is abuudant in British 

 greenhouses. 



52. Lecanium aceris, Bche.* 



From the Coccus of Acer platanoides, Dalla Torre gives 

 Eucomys scutellata, Swed. (c/. Kawall, Stett. Ent. Zeit. 1875, 

 p. 231). Eatzeburg records his Encyrtus atricollis from moths 

 (Ichn. d. Forst. i. 213), but later (1. c.iii. 190) from Coccus aceris, 

 whence he also states {I. c. ii. 149) that Hr. Bouche bred Cocco- 

 bius pallidas. Eondani is also said by Dalla Torre to have reared 

 Encyrtus infidus, Eossi, from it, but without reference ; Gaulle 

 adds Aphelinus insidiator, Dalm. {ohscurus, Westw.), A. scutel- 

 laris, Dalm., Eucomys scutellatus, Swed., Sceptrophorus cyaneus, 

 Dalm., Microterys sylvius, Dalm., and Pachyneuron coccorum, 

 Linn. 



53. Lecanium pruni* 



Nees von Esenbeck writes of Encyrtus ceruginosus, Dalm. 



