1912] Morphology and Biology of Insect Galls 375 



LITERATURE CITED. 



1. Adler, H., Uber den Generationswechsel der Eichengallwespen. Zeit. 

 wiss. Zool. Bd. 35. Leipzig. 1881. Translation by C. R. Stratton, 

 Clarendon Press, Oxford. 



2. Anderson, A. P., Comparative anatomy of the normal and diseased 

 organs of Abies balsamea affected with ^cidium elatinum. Bot. 

 Gaz., vol. 24, pp. 309-344. 1897. 



3. Beutenmiiller, Wm., Monograph of the Sesiidae. Amer. Mus. Nat. 

 Hist., N.Y., pp. 217-352. 1901. 



4. Beutenmiiller, Wm., The Insect Galls of the vicinity of New York 

 City. Amer. Mus. Nat. Hist., vol. 4, No. 4. 1904. 



5. Beutenmiiller, Wm., The North American species of Rhodites and 

 their Galls. Amer. Mus. Nat. Hist., vol. 23, art. 27, pp. 629-651. 

 1907. 



6. Beutenmiiller, Wm., The species of Holcaspis and their Galls. Amer. 

 Mus. Nat. Hist., vol. 26, art. 5, pp. 29-45. 1909. 



7. Beutenmiiller, Wm., The species of Amphibolips and their Galls. 

 Amer. Mus. Nat. Hist., vol. 26, art. 6, pp. 47-66. 1909. 



8. Beutenmiiller, Wm., The North American species of Diastrophus and 

 their Galls. Amer. Mus. Nat. Hist., vol. 26, art. 11, pp. 135-145. 

 1909. 



9. Beutenmiiller, Wm., The species of Biorhiza, Philonix and allied 

 genera and their Galls. Amer. Mus. Nat. Hist., vol. 26, art. 18, pp. 

 243-256. 1909. 



10. Beutenmiiller, Wm., Some North American Cynipidae and their 

 Galls. Amer. Mus. Nat. Hist., vol. 26, art. 22, pp. 277-281. 1909. 



11. Beutenmiiller, Wm., The North American species of Aylax and their 

 Galls. Amer. Mus. Nat. Hist., vol. 28, art. 11, pp. 137-144. 1910. 



12. Beutenmiiller, Wm., The North American species of Neuroterus and 

 their Galls. Amer. Mus. Nat. Hist., vol. 28, art. 10, pp. 1 17-136. 

 1910. 



13. Beutenmiiller, Wm., The North American species of Aulacidea and 

 their Galls. Amer. Mus. Nat. Hist., vol. 28, art, 22, pp. 253-258. 

 1910. 



14. Beutenmiiller, Wm., The North American species of Dryophanta and 

 their Galls. Amer. Mus. Nat. Hist., vol. 30, art. 15, pp. 343-369. 

 1911. 



