OF WASHINGTON, VOLUME XVIII, 1916 121 



11. Cassida sp. (possibly panzeri? Schwarz determ.)- A 

 single specimen somewhat resembling the last species is in the 

 National Collection labelled "Victoria Tex. May 19, 1907 J. D. 

 Mitchell" and the determination is given with much doubt. 

 It is doubtless introduced and is not known to be established. 



12. Cassida flaveola Thunb. Six American specimens of what 

 appear to be this European species are before the writer from the 

 following sources: Rigaud, Quebec, May 24, 1902, Chagnon (in 

 National Collection from F. Knab) Suffern, N. Y. 1 (Schaeffer 

 Collection), Beaver Dam, Wis., Apr. 20, 1896 and Apr. 9, 1911, 

 Snyder (the latter in the Dury Collection and the former in the 

 National Collection), Duluth, Minn. (Fall Collection), and Mora, 

 Minn., June 27, 1907 ,Vickery (in National Collection from F. 

 Knab). The species is said to live in Europe upon certain 

 "chickweeds," Stellaria holostea, S. graminea and Spergula 

 arvensis. The specimen reported by Mannerheim 1853 (Bull. 

 Naturforsch. Gesellsch. Moscou, vol. 26, p. 260) and cited by 

 Hamilton 1894 (Trans. Amer. Ent. Soc., vol. 21, p. 32) under the 

 name Cassida nobilis Linn, may possibly have been this species 

 but their record is based upon a single specimen supposed to 

 have been introduced on horticultural importations into Sitka, 

 Alaska. 



13. Cassida bivittata Say occurs from Massachusetts and 

 Florida to Nebraska and Arizona but its locality records are 

 omitted from the map. Riley 1870 (2nd Rep. Nox. Ins. Mo., pp. 

 57 and 61) illustrates and describes its biology but mentions only 

 sweet-potato as its host-plant. Knab has collected the species 

 on wild morning-glory at Springfield, Mass. It is remarkable 

 that the toothed claws have not tempted someone to make a 

 different generic assignment for this species. 



14. Jonthonota mexicana (Champ.) has been recorded by 

 Schaeffer 1905 (Sci. Bull. Mus. Brook. Inst., vol. 1, p. 173) from a 

 single example on live oak in the Huachuca Mts., Ariz, and another 

 single example from an unknown source is in the National Col- 

 lection labelled Nogales. Mr. Schaeffer informs me that he also 

 has specimens from Prescott and Phoenix, Ariz. 



15. Jonthonota nigripes (Oliv.) is another species apparent- 

 ly divisible into local races to which the correct application of 

 the specific and varietal names are at present uncertain. The 

 extremes of habitat of this complex are, according to labels on 

 specimens before the writer, New Jersey, Florida, Michigan, 

 Texas and Nevada, but the material is very insufficient. Riley 

 1870 (2nd Rep. Nox. Ins. Mo., p. 63) figured larva, pupa and 



1 Possibly the specimen upon which Schaeffer's records of Cassida neb- 

 ulosa are based. 



