292 FiP^TiETH Eeport on the State Museum 



Cynipid gall from China and Japan, viz. from 60 to 70 per cent, or about 

 three times as much as is found in the foliage. Thus it would appear 

 that the irritation of the tissues by the insects causes a concentration of 

 the tannin in the affected parts. 



Distribution. 



The galls of this insect are apparently not of common occurrence, or 

 possibly it should be said, they are not frequently observed, since they 

 are rarely if ever found on sumacs standing where they are exposed to 

 the sun. 



They have been recorded from New Jersey, and from several localities 

 in New York, Illinois, and Minnesota. The species probably has a 

 much wider, though local, distribution. According to Dr. Fitch, it was 

 rare in New York, for in describing it in the year 1866 he states that he 

 had not met with it during the nine preceding years, although he had 

 diligently searched for fresh specimens, and was compelled to fall back 

 on those gathered in 1857 for its description. Examples in the state 

 collection from Avhich the figure was taken were received on Sep- 

 tember 7, 1886, from Schenectady, N. Y., and others from Clin- 

 ton, N. Y., were received in September 1894. They have not come 

 under my observation in the field. 



Gossyparia ulmi (Geoff.). 



The Eiin- Tree Bark-louse. 



(Ord. Hemiptera : Subord. Homoptera : Fam. CocciD^.) 



Geoffrey: Histoire- Abregee des Insectes, i, 1762, pp. 512-513 (de- 

 scribed, as Coccus iibni). 



Howard : in Insect Life, ii, 1889, pp. 34-41, figs. 1-5 (general account). 



Jack, J. G. : in Garden and Forest, ii, 1889, p. 461, fig. 129 (at Boston, 

 Mass., life-history, remedies) ; in id., iv, 1891, p. 184 (distribu- 

 tion, injuries, remedies). 



Lintner: 6th Kept. Ins. N. Y., 1890, p. 189 (at Marlboro and Albany, 

 N. Y.); loth do., 1895, p. 519 (abundant at (ihent, N. Y.); in 

 Country Gent., Ix, 1895, p. 425 (on willow at Loudonville), 

 p. 585 (identified) ; in Bull. 6 New Ser., Divis. Entomol., U. S. 

 Dept. Agricul., 1896, pp. 60-61 (distribution in the state); nth 

 Rept. Ins. N. Y., 1896, p. 280 (abstract of C.-G. notice), p. 287 

 (from Loudonville, Albany, and Catskill, N. Y.). 



Perkins: Insects Inj. Amer. Elm, from nth Rept. Vt. St. Bd. Agricul., 

 1890, pp. 81-87, ^gs- 61-64 (general account). 



