1884. Entomol. Nachrichten. No. 9. 139 



Litteratur. 



Apidae Europaeae (die Bienen Europa'«) per Genera, 

 Species etVarietates dispositae atque descriptae a 

 Dr. H. L. Otto Schmiedeknecht. Fase. 9. 1884. 

 Der soeben ausgegebene 9. Bd. bringt die Fortsetzung der 



Andrenen, 65 fernere Arten. 



Third Report of the United States Entomological 

 Coramission relating to the Rocky Mountain Locust, 

 the Western Cricket, the Army Worm, Canker Worms 

 and the Hessian Fly together with descriptions of Larvae 

 of Injurious Forest Insects, Studies on the Embryological 

 Development of the Locust and of other Insects, and 

 on the systematic position in relation to other Orders 

 of Insects. With many maps and illustrations. Wa- 

 shington, 1883. 347 + 90 SS; u. den Erklärungen der 

 Tafeln. 



Part I. In reference to the Rocky Mountain Locust: 

 Additions to the chronology of Locust ravages in 1880 and 1881. 

 The Rocky Mountain Locust in Montana in 1880. The Rocky 

 Mountain Locust in Wyoming, Montana, etc. in 1881. Kotes on 

 other Locusts and the Western Cricket. Data obtained from solar 

 physics and earthquake commotions applied to elucidate Locust 

 multiplication and migration, by A. H. Swinton. 



Part IL The Army Worm, Canker Worms and the 

 Hessian Fly. 



Part III. Scientific Results: Descriptions of Larvae of 

 injurious Forest Insects. The embryological development of the 

 Locust. The embryological development of Orthopterous Insects. 

 Development of Caloptenus Atlanis. Development of Caloptenus 

 spretus. The development of the bark-boring beetles Hylurgops and 

 Xyleborus. The number of segments in the head of winged Insects. 

 The systematic position of the Orthoptera in rela- 

 tion to other Orders of Insects. 



Note on the geographical distribution of the Rocky Mountain 

 Locust, illustrated with a colored zoo -geographical map of North 

 America. 



Appendices: Early references to the occurrence of the Hessian 

 Fly in North America. A description of the Rye Gall-Gnat, by 

 Dr. Herman Loew. Observations on the ncw Crop Gall-Gnat, by 

 Dr. B. Wagner, translated by Carl F. Gissler. — The Hessian Fly 

 iu Silesia in 1869, by Prof. Dr. F. Cohn. — Koeppen's accouut 



