80 



collections of the National Herbarium, which has already attained large 

 proportions, and is being rapidly augmented. The intention is to fur- 

 nish information regarding the flora of the different sections of the 

 United States under investigation by agents of this Department or 

 by volunteer observers and collectors in the newer districts. No. 1 con- 

 tains papers by G. Vasey and J. IST. Eose, which include lists of plants 

 collected by Dr. Edward Palmer in Southern California in 1888 and in 

 Lower California in 1889, with notes and descriptions of new species. 

 No. 2 contains an article by J. M. Coulter on a collection of plants made 

 by Mr. G. C. Nealley in 1887, 1888, and 1889, in the region of the Eio 

 Grande, in Texas, from Brazos Santiago to El Paso County. A list of 

 903 species is given, with brief descriptive notes on some of the species. 

 The collection is especially rich in species of the native grasses of that 

 region. 



DIVISION OF ENTOMOLOGY, 



BULLETIN NO. 22 (pp. 110). 



Reports of observations and experiments in the practical 

 WORK of the Division. — This bulletin comprises such reports of the 

 field agents of the Division for 1889 as in previous years would have 

 been published in the annual report of this Department. 



Various methods for destroying the red scale of California, D. W. 

 Goquillett (pp. 9-17). — An account of experiments with resin soaps and 

 compounds, and the " Eureka Insecticide " for the destruction of the red 

 scale [Aspidiotus aurantU, Maskell). A portion of the report of Mr. 

 Coquillett, which relates to the discovery of a method whereby trees in- 

 fested with the red scale can be treated with hydrocyanic acid gas at an 

 expense scarcely exceeding one third of that required by the old method, 

 is not included in this bulletin, having been previously published in In- 

 sect Life, Vol. II, double No. C and 7. 



Insects of the season in Iowa, E. Osborn (pp. 18-41). — A report on in- 

 sects injurious to grasses, including notes on the following leaf-hop- 

 pers : Diedrocephala mollipes, D. noveboracensis, D. versuta, D. coccinea, 

 Tettigonia hieroglyphica, Agallia quadripmnctata, A. sanguinolenta, Ally- 

 gus irroratus, Gicadula exitiosa, Jassus inimiciis ; on the grass-root plant- 

 louse alias tjie dogwood plant-louse {Schizoneura corni, Fab.) ; and on 

 the chinch-bug (Blissus leucopterus, Say.) and the long hxig {Ischnodemus 

 falicus, Say.). 



Insects affecting grains, F. M. Webster (pp. 42-72.) — Notes on the wheat- 

 straw worm {Isosoma tritici, Riley), wheat-stem maggot {Meromyza 

 americana. Fitch), western striped cut-worm {Agrotis herilis, Grote), 

 army-worm {Leucania unipuncta, Haw.), fall array-worm {Laphygma fru- 

 giperda, Ab. and Sm.), a new cut-worm {Lnperina [Radena] stipata, 

 Morr.), white grub {Lachnosterna sp. ?), varying auomala {Atiomala 

 varians, Fab.), wheat wire- worm {Agriotes mancus, Say.), Drasterius ele- 



