104 PAPERS BY DR. B. CLEMENS. 



The larva? of the insects are very like each other, but I don't 

 knoAv whether that of Cornifoliella undergoes the same 

 change of coloration after the last moulting as that of Nysae- 

 follella. The head and shield dark brown; body nearly 

 white, with seven minute, black points along the dorsum, 

 and eight on the ventral surface, somewhat larger, and more 

 distinct. Its mode of preparing for pupation is the same as 

 the previous species, but whilst the individuals of Nysa>- 

 foliella on a single tree are almost innumerable, those of 

 Cornifoliella are not abundant. 



ASPIDISCA. 



Fore-wings with no discoidal cell. The subcostal nervule 

 traverses the middle of the wing, attenuated from the base to 

 the basal third, where it gives origin to a long, marginal 

 branch, which reaches the costa at the apical third of the 

 wing; near the tip it subdivides into three short branches, 

 one of which is delivered to the costa behind the tip,* one 

 to the tip, without attaining the extreme apex, and one to 

 the inner margin, somewhat behind the second marginal 

 branch. The median nervure is wanting. The submedian 

 simple. Hind-wings with no dis- ^___ _____ 



coidal cell. The subcostal nervure 

 is central and attenuated towards 

 the base, and at about its apical / ====: ^^ 



third delivers a branch to the inner 'C ;::::::::: ^^~^ :: ^=' 

 margin and is bifid behind the tip 



of the wing. The median is simple. The submedian obso- 

 lete or wanting. 



Size extremely small. Head and face smooth, covered 

 Avith closely appressed scales. Face rather broad, and some- 

 what produced beneath into a point. Forehead rounded. 

 Ocelli none. Eyes extremely small, not visible from above, 

 and scarcely visible in front. Antennas held extended at the 



* I am again perfectly at a loss to solve the meaning of this expression 

 "behind the tip." H. T. S. 



