THE EMBRYOLOGY OF THE HONEY BEE 73 



Will (1888, 1888a) Aphis. 



Tichomirowa (1890) Chrysopa. 



Tichomiroff (1890) Calandra. 



(1892) Bombyx and Calandra. 



Tichomirowa (1892) Pulex. 



Heymons (1897) Lepisma and Campodea. 



Claypole (1898) Amtrida. 



Tschuproff (1903) Epitheca and Calopteryx (Median section 

 of mesenteron only.) 



Dickel (1904) Apis. 



(II) Mesenteron derived from the lower layer (mesoderm, en- 

 tomesoderm, primary entoderm). 



1. Derived solely from anterior and posterior sections. 

 Grassi (1884) Apis. 



Kowalevsky (1886) Calliphora (Musca). 

 Graber (1889) Lucilia, Calliphora (anterior rudiment only) 

 Lina. 



Wheeler (1889) Blatta, Leptinotarsa (Doryphora). 



Ritter (1890) Chironomus. 



Heider (1888) Hydrophilus. 



Karawaiew (1893) Pyrrhocoris. 



Kulagin (1897) Platygaster. 



Escherisch (1900) Calliphora. 



Petrunkewitsch (1902) Apis. 



Schwangart (1904) Endromis, Zygaena. 



Nusbaum and Fulinski (1909) Gryllotalpa. 



2. Derived from anterior and posterior sections and also from 

 a median section. 



Nusbaum (1886) Periplaneta. 



Nusbaum and Fulinski (1906) Phyllodromia. 



Hirschler (1905) Catocala. 



(1909) Donacia. 



(1909a) Gasteroidea (Gasterophysa). 



3. Derived from anterior and posterior sections of mesoderm 

 and also from splanchnic (inner) layer. 



Heider (1885) Hydrophilus. 



Cholodkowsky (1891c) Phyllodromia (Blatta). 



4. Derived from splanchnic layer of mesoderm by delamina- 

 tion of two lateral bands. 



