468 Pomona College Journal of Entomologt 



ADDITIONS AND CORRECTIONS 



Number of the heading of my last study on the Aphididae of Southern California 

 should have been VI and not V. 



On page 400, Vol. Ill, No. 1, the synonymy of Aphis rudbeckiae should be: 



1906 Macrosiphiim rudbeckiae (Fitch) (Fitch) Thos. 111. St. Lab. Nat. 



Sanb. Hist. No. 2, 4. 



„ , ^ 1879 S. rudbeckiae (Fitch) Monell, 



1851 Aphis rudbeckiae Fitch, Cat. g^jj ^ g q^^ g^^^ y ^i. 



Homoptera, N. Y., 66. ]887 Nectarophora rudbeckiae 



1878 Siphonophora rudbeckise (Fitch) Oestl. Aphid. Minn., p. 83. 



ADDENDUM TO THE SYNONYMY 



Siphocori/ne 



Hyadaphis Kirkaldy. 



Mr. Davidson also made other corrections here, which had been done before the 

 article went to press, so are not necessary here. Regarding otlier important points 

 he wrote as follows : 



Drepanaphis platanoides Schrank. "I liave commonly taken tlic apterous ovipa- 

 rous female, but never the winged form." 



Aphis atriplicis L. "I believe there is a record of Aphis atriplicis L. being 

 found in Southern California on Atriplex sp. This is in an old number of the 

 Southern California Academy of Sciences' publications. According to some 

 authors, atriplicis equals rumicis 1.." 



"I have also a few additional things to suggest. In my first paper I mentioned 

 Pemphigus populicaulis. This was later (as in my second paper) found to be P. 

 populitransversus. As far as I am concerned, the former has not been found in 

 this State." "Similarly Aphis cratfegifoliae Fitch was the species I took on Cratae- 

 gus, not cratsegi, although the latter has very possibly been reported. According to 

 the International Zool. Congress Nomenclature Rules, my Pemphigus ranunculi 

 must be changed and possibly ouglit to be listed P. sp. (ranunculi preoccupied) 

 or just P. sp. Davidson." 



Accordingly Pemphigus populie.uilis Fitch must be struck off from the Host 

 Index for tlie present. Prof. W. T. Clark reported Aphis crataegi Monell on Cra- 

 taegus sp. in Canadian Entomologist XXXN', p. 2t9, 1903. 



From Mr. J. T. Moiull 1 h.ive Ic.-irned tiiat the following synonyms should also 

 be added : 



Chaitophorus viminalis Monell. 



Chaitoijliorus nigra? Oestl. 

 Siphocorync caprcae Fab. 



S. salicis Monell. Or according to later revision as follows: 

 Hyadaphis pastinacae (Linn.) Schout. 



Siphocoryne caprcae Fab. 



S. salicis Monell. 



