June, '04] ENTOMOLOGICAL NEWS. I9I 



{ b ) Oi'iposiiion. 

 Similar to that given under nigrum. 



II. — Classificatory outline, showing theory of nidus construction 

 and oviposition ; summary. 



It seems probable and possible, from the foregoing, that the method of 

 constructing the nidus varies according to the species of oak and the two 

 main leaf types represented by these species. Those made from Q. 

 rubra, and species of the same group, are probably constructed as under 

 the first method ; indicated both by observation and by old cases. While 

 those on nigrum and species of the nigrum group including alba, with 

 broad tipped leaves, are constructed as given under the second method 

 of construction, flatly ; evidence by the cases found on the ground under 

 these oaks, and also by observation. These points need further investi- 

 gation. 



1. Type : rubra, group of Quercus, including all species with acute 



or slenderly tipped leaves, as in rubra, etc. 



(a) Construction of nidus. 



Section cut as usual ; leaf faces approximate^ rolled ob- 

 liquely with slender tip projecting. 



(b) Oviposition. 



In the projecting slender tip after rolling : 

 (i) before tucked in, more probable ; 

 (2) after tucked in. 



2. Type : nigrum, group of Quercus, including all species with 



obtuse leaves, as in nigrum, alba, etc. 



(a) Construction of nidus. 



Section cut as usual ; leaf faces flat, rolled in the same 

 straight line. 



(b) Oviposition. 



In crevice of partly rolled nidus. 



Hence, construction of nidus depends on shape of leaf, which depends 

 on group of Quercus ; and oviposition varies directly with the method 

 of construction. 



III. — Miscellaneous Notes. 



(a) On time of construction and oviposition ; from^ a single 



observation. 



Incision ... 30 minutes. (?) 



Creasing ... 15 " 

 Rolling ... 9 " 



Oviposition . . 6 " 



(b) On habits. 



