SUPPLEMENT 



Since the preceding pages were sent to press a certain amount of 

 information has come to hand, which it seems well should be included. 



Phenacoccus betheli Ckll. 



Through the kindness of Miss Eugenia McDaniel, of the Michigan 

 Agricultural College, I have received some specimens of what is in all 

 probability Phenacoccus dearnessi King. These specimens are from 

 Crataegus sp., near Lansing, Mich. They agree in all respects with the 

 description of P. dearnessi (which was taken from Crataegus in Canada) 

 as far as the description goes. If this determination be correct, P. betheli 

 Ckll. must fall as a synonym of P. dearnessi King, for the specimens from 

 Michigan agree in all respects with the specimens from the type material 

 of P. betheli which are recorded on a preceding page. 



Trionymus grindeliae Ferris. 



1918. Trionymus grindeliae Ferris, Cal. Species Mealy Bugs, p. 71, pi. 3, fig. 26. 



From Professor Cockerell I have some specimens labeled "Ripersia 

 confusella var. (light yellow), old mill, Las Vegas, N. Mex., Apr. 1902, 

 W. P. C.," which are unmistakably Trionymus grindeliae Ferris, a species 

 that has previously been recorded only from Pacific Grove, Cal. Whether 

 T. grindeliae is the same as R. confusella remains to be seen. 



Aspidiotus graminellus Ckll. 



From Professor Cockerell I have also some specimens of what is 

 beyond doubt A. graminellus, from Bouteloua sp. at Denver, Colo. (E. 

 Bethel coll.). The specimens from New Mexico, which I have previously 

 referred provisionally to this species, agree in all respects except for the 

 absence of all trace of the third pair of lobes. This difference, however, 

 is extremely slight and these specimens may quite definitely be referred 

 to this species. 



Targionia covilleae (Ferris). 



Through the kindness of Mr. E. E. Green I have finally been enabled 

 to examine specimens of Targionia nigra (Sign.), the type of the genus. 

 With this the species described on a preceding page as Chrysomphalus 

 covilleae n. sp. appears to be strictly congeneric. It is, I believe, the only 

 species thus far described from North America that may correctly be 

 referred to this genus. 



