254 APPENDIX. 



doubt as to whether the species found so abundantly 

 on currant and other plants in this country is really 

 the Lecanium coryli of Linnaeus, I think, on the whole, 

 it is advisable to abandon the Linnsean name alto- 

 gether, and give priority to Mr. Douglas's L. saro- 

 thamni, of which I have examined a long series of 

 type specimens. The amended synonymy will, there- 

 fore, be as follows : 



LECANIUM PERSIC^, var. SAEOTHAMNI (Douglas). 



Lecanium sarothamni, Douglas; Ent. Mo. Mag., s.s., 



vol. ii, p. 65 (1891). 

 Lecanium rehi, King; Jahrb. der Hamb. Wissen. 



Anstal., xviii, p. 5 (1901). 

 Lecanium ribes, Signoret et Auct., nee Fitch. 

 Lecanium persicse, var. coryli (Linn.), Newstead ; 



Coccida3 of the British Isles (Ray Society), vol. 



ii, p. 94 .(1903). 



GENUS DACTYLOPIUS (page 162). 



Mr. Cockerell * now refers the commercial cochineal 

 and the allied species to this genus. He says : 

 " Through the kindness of Mr. C. D. Sherborne and 

 Mrs. C. H. Fernald I have been able to obtain full 

 particulars regarding this genus, which has been 

 altogether misunderstood by authors. Dactylopius, 

 Costa (' Fauna del Regno di Napoli,' vi, p. 15), was 

 founded on two species D. coccus, Costa, and D. polo- 

 nicus. The latter belonged to the already founded 

 genus Mar gar odes. The former, which is the first 

 mentioned, is to be regarded as the type of the genus. 

 D. coccus is said to be Coccus cacti, L., but instead of 

 being a synonym of that species (Monophlebus cacti j-), 

 it is the first available name for the commercial cochi- 



* Cockerell, ' Annals and Mag. Nat. Hist./ s. 7, vol. ix, 1902, p. 453. 

 t Cockerell, ' Proc. Acad. Nat. Sci. Philad./ 1899, p. 261. 



