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vious description of his own in Act. Ups., 1736, p. 37, No. 8, " Pediculus hybernacu- 

 lorum arboreus villosus," and describes Pediculus adonidum in terms subsequently 

 used in the " Systema Naturae" (c.f. infra), but adding here the words, "An Chermes 

 vel Aphis? os enira non examinavi." This species is omitted in the " F. S. Editio 

 altera," doubtless because it was seen not to be a Pediculus, but it re-appears in the 

 S. N. as Coccus adonidum. 



In his "Hist. abr. Ins.," i, 511, i (1764), Greoffroy described both sexes of 

 Coccus adonidum, citing the Pediculus adonidum of Linne as synonymous, and 

 stating that Linne had so designated it generically on account of its resemblance to 

 a woodlouse, and because he did not know the male sex. Of the male he says that 

 the two wings and the four filaments of its tail are snow-white ; of the latter two 

 are long and the other two a little shorter. The female does not differ appreciably 

 from the description by Linne (see below), except that no mention is made of the 

 raised, longitudinal, dorsal line and the punctures ; but these discrepancies, and the 

 want of a description by Linne, make it doubtful if the species in both cases was 

 the same. 



In the " Syst. Nat.," p. 740, 4 (1767), Linne describes his Coccus adonidum as 

 follows, citing his Pediculus adonidum and Coccus adonidum, Greoffr., as synonyms : 

 " C. rufa farinacea pilosa. Corpus ovatum, longiusculum, album. Linea dorsalis 

 longitudinalis, elevata, cum puncto obsoleto in singulo segmento. Laterum margines 

 acuti cum incisuris 14, totidemque punctis prominentibus. Area inter lineam 

 dorsalem marginemque totidem punctis in seriem longitudinalem dispositis. Cauda 

 bifida. Antenna? capillares fuscse. Pedes 6, tenues, fusci. Senior factus folliculum 

 struit, se ipsa sexies majorem, intra quem insimul ova flava includit." 



The male, except in the quotation from Geoffroy, " alis setisque niveis," is not 

 alluded to. 



Shaw, in his " General Zoology," vi, p. 189 (1806), gives a brief and imperfect 

 description of Coccus adonidum, in which he states that the male is rose-coloured, 

 somewhat mealy, with semitransparent milk-white wings, and four long filaments at 

 the tail ; the female presents no specific character. This may possibly be the same 

 species as Greoffroy's. 



Burmeister (Handbuch, ii, i, p. 74, Taf. 2, fig. 2 <?, 10 ?), describes Coccus 

 adonidum thus: — " Aurantiacus, undique farinosus, $ halteribus instructis, setis 

 caudalibus pubescentibus ; ? elliptica, utrinque fimbriata, setis caudalibus crassis, 

 corpore triplo brevioribus. Long., $ , li'", $ , 1^'"." 



According to the synonyms quoted, this purports to be the C. adonidum of 

 Linn., Fab., Greoffr., and Bou'che. As far as the $ is concerned it does not agree in 

 the colour of the wings, given by Greoffroy as " snow-white," and by Shaw as " milk- 

 white ;" and as regards the $ it differs from the desci-iption of Linne and all other 

 authors, in stating that the caudal setae are thick and shorter than the body (the 

 figure represents them as one-third of its length, and the lateral projections short, 

 broad, and rounded at the end). 



Targioni-Tozzetti, in his " Studii sulle Cocciniglie" (1867), p. 9, says, "The 

 genus Dactylopius contains two species generally confused under the name of Coccus 

 adonidum ;" he does not discriminate nor describe them, but, on Tav. i, figs. 1 — 5, he 

 figures what is stated (p. 75) to be " D. longispinus (C. adonidum, Auct.)." This 



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