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XVII. The Larva of Eriocephala allionella, By THomMAsS 
ALGERNON CHAPMAN, M.D., F.E.S. 
[Read April 6th, 1898.] 
At the end of March, 1897, I met with Zriocephala 
allionella near Cannes, and by imprisoning several of 
the females with damp moss, I succeeded in obtaining 
eggs in the same way as I had done in the case of Hrio- 
cephala calthella. In due time these eggs hatched, but 
though a few of the larvz appeared to have eaten a little, 
as evidenced by some coloration of their intestinal 
contents, nothing further came of the experiment. This 
was, however, due rather to my travelling about at the 
time and giving them no fair chance, than to the want of 
a proper species of moss; which may, however, have been 
the effective cause of failure. I preserved one specimen 
of the larva tolerably successfully, and from this example 
and my recollections of them alive, the remainder having 
‘been sacrificed in the attempt to rear them, I am able to 
give some account of it. Briefly, this account might be 
reduced to a statement that the larva does not differ to 
any appreciable extent from that of calthella, It is some- 
what larger and less flimsy in consequence, and perhaps 
whiter in colour. 
The eggs are a little larger than those of £. calthella, 
but I have not the exact measurement; they are similarly 
clothed with a snowy exudation of white filaments. 
The larva is about 0°95 mm. in length and of the same 
truncate angular outlines as that of calthella. The antenne 
are similarly very long, and the true legs and eight pairs of 
false legs have the same structure, relation and size as in 
calthella. There is an error in my description of the larva 
of calthella, which was first called attention to by Professor 
H. G. Dyar, to whom I sent specimens; this is as to the 
number of rows of ball-like appendages. On the first 
seven abdominal segments, there are ten rows of them and 
not eight, as stated in my description (Trans. Ent. Soc. 
Lond, 1894, p. 342). They occur in double rows, a double 
row on each side of the dorsum, and a double row on each 
lateral region, and a double row again on each side kelow 
TRANS. ENT. SOC. LOND. 1898.—PART IV. (DEC.) 
