162 BULLETIN 85, UNITED STATES NATIONAL MUSEUM. 



Curtis, John '35. — British Entomology 1835: No. 565 (2 pages and 1 color plate). 



'42.— The Pear Tree Psylla. Gardeners' Chronicle, 1842: 156. 

 Dahlbom, a. G. '51. — Anmarkninger ofver Insekter som blifvit funne pa Gottland 



och i en del af Calmare Ian. Vet. Akad. Handl., 1851: 177. 

 DiCKEL, Otto '05. — BisherigeVeranderungender Fauna MitteleuropasdurchEinwand- 

 erung und Verbreitung Schadlicher Insekten. Zeitschr. f. Wiss. Ins. Biol., 

 1: 402, 1905. 

 DoBENECK, VON '95. — Ein Unbekannter Rhynchote auf Sinapis alba. Zeitschr. 



Pflanzenkr., 5: 324-326, 1895, (Apparently a psyllid larva.) 

 Douglas, J. W. '76o. — Notes on Some Species of Psyllidse. Ent. Month. Mag., 

 13:40-42, 1876. 

 '766.— Notes on Some Species of Psyllidae (2). Ent. Month. Mag., 13: 67-68, 1876. 

 '78a.— The Scandinavian Psyllid^. Ent. Month. Mag., 15: 41--i2, 1878. 

 '786. — The Natural History of Psylla succincta. Ent. Month. Mag., 15: 68-69, 1878. 

 '78c.— Note on Triozagalii Frst. Ent. Month. Mag., 15: 92-93, 1878. 

 '79. — Notes on Some Species of British Hemiptera. Ent. Month. Mag., 15: 255, 

 1879. 

 DuDA, L. '92. — Catalogus Insectorum Faunae Bohemicse Rhyncota.^ — Heteropt«ra, 



Cicadina, Psyllina. Ges. f. Physiokratie, Bohmen, 1892: 37-39. 

 Edwards, J. '90. — Catalog of British Hemiptera (Homoptera), 1890: 15-16. (A bare 

 list, with no references.) 

 '96. — Hemiptera-Homoptera of the British Isles. — Psyllidae: 224-261 and pis. 



26-28, 1896. 

 '08. — Some British Homoptera Hitherto Undescribed or Unrecorded. Ent. 

 Month. Mag., 44: 85-87, 1908. 

 Enderlein, G. '10a. — Panisopelma quadrigibbiceps, Eine neue PsylUdengattung aus 

 Argentinien. Zool. Anzeiger, 36: 280-281, 1910. 

 '106. — Wissen. Ergebnisse der Exped. dem Kilimandjara, etc., Hemiptera (Peylli- 

 den). Kon. Schwedischen Akad. Wiss., 12(8): 137-144, 1910. 

 EssiG, E. O. '13. — Injurious and Beneficial Insects of California. Month. Bui. Cali- 

 fornia State Commission Horticulture, 2: 43-44, 1913 (pear psylla in California). 

 Felt, E. P. '11. — The Ash Psylla (Psyllopsis fraxinicola Frst). New York State 

 Entomologist, 26th Report; in New York State Museum Bull. 147:39-40, 1911. 

 Fitch, Asa '51. — Catalog, with References and Descriptions of the Insects Collected 

 and Arranged for the State Cabinet of Natural History, 1851: 64. (Reprinted 

 in Lintner '93.) 

 '57. — Fourth Report New York State Entomologist, 1857: 740. 

 Fletcher, J. '83. — Note on the Occurrence of Pachypsylla in Cowansville, Canada, 



near Ottawa. Canadian Entomologist, 15: 40, 1883. 

 Flor, G. '60. — Die Rhynchoten Livlands in Systematischer Folge Beschreiben (1) 

 Rhynchota frontirostria Zett., 1860: 479. 

 '61. — Zur Kenntniss der Rhynchoten Beschreibung neuer Arten der Familie 

 Psyllodea Burm., Moskau, 1861. 

 Forster, Arn. '48. — Uebersicht der Gattungen und Arten in der Familie der Psyl- 



loden. Verh. d. Nat. Vereins d. Preussischen Rheinlande, 1848: 67-98. 

 Forbes, S. A. '85. — The Yellow Jumping Pear Louse. Illinois State Entomologist's 



14th Report, 1885 : 98-100. ( Trioza pyrifolix) 

 Frauenfeld, G. R. '61. — Beitrag zur Kenntniss der Insekten-Metamorphose. 

 Verh. Zool. Bot. Ges. Wien, 11: 163-174, 1861. 

 '64.— Zoologische Miscellen III. Verh. Zool. Bot. Ges. Wien, 14: 681-696, 1864. 

 '70. — Metamorphoses of Injurious Insects. Verh. Zool. Bot. Ges. Wien, 20: 662, 

 1870. 

 Froggatt, W. W. '98. — The Growth of Vegetable Galls (Psyllidae). Agricultural 

 Gazette of New South Wales, 9:488, 1898. 



