Anatomy of the Coccidee, in Zeitschr. f. Wissen. Zoologie, Vol. XLII 
impé 174 At first both the male and the female larvae posses 
both » antenne and simple eyes, which are subsequently lost by 
fe 
1886.] Entomology. 557- 
are known to be carnivorous by exception, and not a few are so 
as a rule. These are chiefly found among Pyralids, and it is not 
necessary for my present purpose to refer to the cases in detail. 
For some years now I have been studying the remarkable life- 
habits of the Aphididz and especially of some of the gall-making 
and leaf-curling species of Pemphiginz. 
In the collecting of material and making of. observations, I 
have been assisted by Mr. Th. Pergande, who has on a number of 
occasions, since 1880, found the larva of this Fenesica associated 
with various plant-lice. Among the species with which it has 
been thus found associated are Pemphigus fraxinifolii Riley, which 
curls the leaves of F raxinus; Schizoneura tessellata Fitch, which 
The frequency with which this larva was found among these 
plant-lice justified the suspicion that it feeds upon them or derives 
benefit from them; yet up to 1885 the presumption was that it 
benefited from the secretions of the plant-lice rather than from the 
insects themselves, Last fall, however, Mr. Pergande obtained 
abundant evidence that the Fenesica larva actually feeds upon the 
Aphidids, and I thought it worth while to call attention to this 
Positive proof of the carnivorous habits of the species. That the 
different 
rendered more than probable for the following reasons: 
I. Attempts to feed the larva upon the leaves upon which it was 
ea ie proved futile, the larva perishing rather than feed 
m. 
2. The food-plants given by the authorities are such as are well 
known to harbor plant-lice. 
“Tas r. Scudder’s authorities, as he informs me, were picked up 
re and there and one of them for alder, which he recalls, viz., 
a Mr. Eme 
lice.” 
4. Mr. Otto Lugger has frequently observed the larva around 
at among Pemphigus imbricator on beech, but never dis- 
neither of these ob ble't t itive proof of the 
fact — C V. Riley servers were able to get posi p a 
WITLACZIL on Cocctp#.—Dr. E. Witlaczil completes his notes _ 
on the plant-lice by an interesting article on the Morphology an 
ae 
Sexes, the females degenerating so as to became wax-covered 
1 VOL. xx 15 Fe 
m0, VE. 37 AS 
ty “found it more commonly on a limb among plant- 
