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 Geoffroy's Chermes quercus reniformis, i.e. 

 quercus (L.), which is a Kermes. 



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

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

 Eulecanmm. 



EuLECANiuM ALNi (Modeer, 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. 



EuLBCANiuM viNi (Bouclie) ; 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 tUue, L., S. N. x._ 1758, 

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



known. 



EULECANIUM PERSIC^ (Fabr., 1766) ; Coccm persicce, 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, infequale, brun- 

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

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

 Geoffroy, and Reaumur. 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 persiccs 

 rotimdus, which, is, I suppose, Signoret's L. rotimdum {cr edited 

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

 Signoret's L. persicce is Reaumur's Coccus persicce oblongus. I 

 have not access to the descriptions of the supposed synonyms 

 costatus, Schr., 1781, persicorum, 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- 



Jl4-py»Q'r/iri 



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 sphaerico- 

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



