210 ENTOMOLOGICAL NEWS. [September, 



based on all the stages of an insect is necessary to determine its 

 relationship, and who do not think the good old museum methods 

 of neuration, palpi and hairy eyes (good as they may be as minor 

 individual factors, helping to form a collective opinion) are suffi- 

 cient for the present ever-advancing era, should read Dr. Chap- 

 man's essay " On some neglected points in the structure of the 

 pupae of Heterocerous Lepidoptera, and their probable value in 

 classification; with some associated observations on larval pro- 

 legs" (Trans. Ent. Soc. Lond., 1893, pp. 97-119); The Presi- 

 dent's address to the British Association considered in its relation 

 to Entomology" (Ent. Record, iv, pp. 262-265; "The evolution 

 of the Lepidopterous pupa" (Ent. Record, vol. v, pp. 24-28) etc. 



In the "Canadian Entomologist" for March, Mr. W. H. Ed- 

 wards writes: " There never will be a final authoritative revision 

 of any genus of butterflies till the preparatory stages in every 

 species of it are known." This is undoubtedly true, in spite of 

 the wails to the contrary. Those who consider themselves enti- 

 tled to speak as authorities because they study the dried bodies 

 of insects are legion and many would not naturally grant Mr. 

 Edwards' assumption. Others, however, would. I would ask 

 If this be true for the revision of a genus, how much more neces- 

 sarily is it so when families have to be classified ? 



I trust this may commend itself to the attrition of some at 

 least of our American lepidopterists, and I beg to thank in ad- 

 vance our editor for allowing me to promulgate these views and 

 to set forth the above facts. 



o 



THE COCCID/E FOUND ON IVY HEDERA 



By T. D. A. COCKERELL, New Mexico Ag. Exp. Station. 



Having had occasion to study some Coccidae found on ivy, I 

 have brought together the following notes on the species infesting 

 that plant: 



(i.) Phenacoccus hederce (Sign.). On ivy at Montpellier, 

 France. 



(2.) Lecaniwn maculatum Signoret. On ivy at Montpellier, 

 France. 



(3.) Lecanium hesperidum (L.). Comstock in America, and 

 Maskell in New Zealand, mention this as found on ivy. Mr. J. 

 Fletcher sent me specimens on Hedera helix, which came from 



