[51] Report of the State Entomologist. 147 



later publications, which there is not the time at the present writing 

 to collate. 



Coccus iimnmerabilis Eathvon : in Pennsylvania Farm Journal, Aug., 



185-i, iv, pp. 256-258, with figure. 

 Lecanium caricce Fitch : in Country Gentleman for Jan. 18, 1855, v, p. 38, 



with figure. 

 Lecanium acericorticis Fitch : in Trans. N. Y. State Agricul. Society for 



1859, xix, 1860, pp. 775, 776. 

 Coccus aceris Leidy: Eeport to the Council of Philadelphia on Insects 



Injurious to Shade Trees, 1862, pp. 7, 8 (erroneous determination). 

 Lecanium acericola Walsh-Kiley: in American Entomologist, i, 1869, 



p. 14, fig. 8a. 

 Lecanium macluroe Walsh-Riley : in ib., fig. %b. 

 Lecanium acerella Rathvon : in Lancaster Farmer, July, 1878, viii, pp. 



101, 102. 

 Lecanium acericola. Thomas : in Prairie Farmer for July 22, 1876. 

 Lecanium acericola. Putnam: in Proceedings Davenport Acad. Nat. Sci., 



i, 1876, p. 37; in Davenport Daily Gazette, for June 5, 1877; in 



Transactions Iowa Horticultural Society for 1877, xii, 1878, pp. 



317-324. 

 Lecanium acericorticis. Glover : in Report Commissioner of Agriculture 



for 1876 (1870), p. 44, No. 53. 

 Lecanium acericola. E. A. Smith : in Prairie Farmer for March 2, 1878 ; in 



7th Report Insects Illinois, 1878, pp. 120-131, figures. 

 Lecanium acericola. Lintner : in Count. Gent, for July 4, 1875, p. 425. 

 Pulvinariainnumerabilis. Putnam : in Proceedings Davenport Acad. Nat. 



Sci., ii, 1879, pp. 293-346, pis. 12, 13. 

 Pulvinaria innumerabilis. Comstock : in 2d Report Cornell University 



Experiment Station, 1883, p. 137. 



Aphis brassicse (Linn.). 



The Cabbage Aphis. 



(Ord. Hemiptera: Subord. Homoptera: Fam. ApHiniDiE.) 



Aphis brassiciC Linn.eus: Systema Natune, 12 edit., ii, 1767, p. 734, No. 12. 

 The following note relating to perhaps the most common and inju- 

 rious plant-louse known to the vegetable garden, was received from a 

 correspondent in Laceyville, Ohio: 



Inclosed I send you a piece of a leaf from a rutabaga turnip. The 

 insects, like those on the leaf, attacked my crop of turnips when the 

 bulbs were about one-fourth grown, and arrested further growth. 



The tops are now nearly destroj'ed, and the crop almost a failure. 

 I tried dusting with plaster, but it did no good. Please tell me what 

 this is, and if there is any remedy. 



When going after the turnip leaf, I crossed a young apple orchard, 

 and cut the inclosed twig from one of the trees. Many of the trees 

 were infested in the same way. H. L. 



