Natural History of the Honeybee. 39 



In my ' ' Stammesgesehichtlichen Entstehung der Bienenstaates ' \ (Leipsig, 1903), I have, 

 in Appendix 4 pp. 90-95), a "concluding word concerning Bethe's investigations on bees. 

 The significance of ocelli in bees, ' * in which I confirm my views on their ability to see, and 

 verify it in part through experiment. Many other pertinent questions are there touched 

 upon. 



Full of importance in consideration of the ability of insects to orient by ^heir eyes is the 

 following work of the Peckhams. The observations of the Peckhams^on the sense of orien- 

 tation in wasps supports my work on bees. Unfortunately this entire excellent investigation 

 (On the Instincts and Habits of the Solitary Wasps, by George W. Peckham and Elizabeth 

 O. Peckham, Madison, Wis., 1898), became known to me only after a long time after the 

 German edition of this paper had been published. I value these observations more highly 

 than the very admirable but frequently visionary work of T. H. Fabre (Souvenirs ento- 

 mologiques, Serie 1-9. Paris, 1879-1905). 



The works of Bouvier on solitary wasps (Les Habitudes des Bembex, Monographic 

 Biologique, Paris, 1901); of K. Escherich (Die Ameise, Braunschweig, 1906), and the obser- 

 vations of Charles Ferton (Notes sur 1 'instincts des Hymenop teres, Melliferes, et Ravis- 

 seurs, 3 serie, Paris, 1905, fall in this province. All these works give many beautiful 

 explanations, and confirm my statements more or less. 



