92 THE ENTOMOLOGIST. 



"albo tomento obductus." His first citation of literature is 

 "Modeer, Act. Gothenb. i. p. 24, § 18"; Douglas says that 

 Modeer's insect is Geoffrey's Chermes quercus reniformis, i.e. 

 quercus (L.), which is a Kermes. 



EuLECANiuM coRYLi (L.) ; Coccus coryli, L., S. N. 1758, p. 456. 

 — Based on Reaumur's figures, which represent a very convex 

 Eulecanium. 



EuLECANiuM ALNi (Modoer, 1778) ; Coccus alni, Gmel., Syst. 

 Nat. 1788, p. 2221. — Gmelin's account is entirely based on that 

 of Modeer. Compare Douglas, Ent. Mo. Mag., September, 1886, 

 p. 80. 



Eulecanium vini (Bouche) ; Lecanium vini, Bouche, Stett. 

 Ent. Zeit. 1851, p. 112. — The description is extremely short, but 

 it may be possible to determine the species. 



Eulecanium tili^ (L.) ; Coccus tilice, L., S. N. x. 1758, 

 p. 456. — Based on Eeaumur's figures ; the species is well 

 known . 



Eulecanium persic^ (Fabr., 1766) ; Coccus i^ersicce, Gmel., 

 Syst. Nat. 1788, p. 2220; Fabr. Ent. Syst. 1798. — We used to 

 think we knew this species, but it has lately become involved in 

 obscurity. Fabricius in 1798 describes it as found on the peach, 

 and having " corpus medium, subrotundum, insequale, brun- 

 neum." Gmelin does not quote Fabricius, and describes it as 

 " nitens, rubicundus, spadiceus aut niger." He quotes Modeer, 

 Geoffroy, and Eeaumur. Reaumur's figures represent an un- 

 determinable Lecaniine on peach. Geoffroy quotes Reaumur's 

 figures, and says the insect is round and brown, with four 

 "filets" at its tail! Modeer's insect is the Coccus persicce 

 rotundus, which is, I suppose, Signoret's L. rotundum (credited 

 to Reaumur), this being identical with L. pnmastri, Fonsc. 

 Signoret's L. persicce is Reaumur's Coccus persiccB ohlongus. I 

 have not access to the descriptions of the supposed synonyms 

 costatus, Schr., 1781, persicoruin, Ramer, 1789, and amygdali, 

 Fourcroy, 1785. The last was doubtless founded on Geoffroy's 

 account. 



L. prunastri, as shown by mounted specimens kindly lent to 

 me by Mr. Theo. Pergande, has antennae varying from 6- to 7- 

 jointed, the respective formulae (omitting the first joint in each 

 case) being 3 6 2 5 4 and 4 (2 3) 7 6 5. In the 6-jointed form the 

 suture between joints 3 and 4 of the 7-jointed form is ob- 

 literated. 



Coccus clematidis, Gmel., Syst. Nat. 1788, is based on 

 Geoffroy's account of a coccid on clematis It is apparently a 

 Lecanium, but Geoffroy seems to have mixed up Lecaniines and 

 mealy bugs in a hopeless fashion. 



Coccus uva, Gmel., Syst. Nat. 1788, if a coccid, can only be 

 a Margarodes. The description reads, " C. testa fusca sphserico- 

 gibba subflavescens," and it is stated to be found in Sweden 



