' THE ENTOMOLOGIST. 
Vou. XXV.] OCTOBER, 1892. [No. 353. 
LIFE-HISTORY OF CARTEROCEPHALUS PALAMON. 
By F. W. Frouawe, F.E.S. 
In June, 1891, I received some living females of C. palemon 
from the Rev. J. A. Mackonochie, who most kindly captured 
them expressly for me, my friend Mr. G. Bryant having in- 
formed him I was desirous of working out the life-history of this 
species; it is therefore through the kindness of both gentlemen 
I was enabled to carry out my wish, and so became acquainted 
with the complete history of C. palemon, from the depositing of 
the egg to the emergence of the imago, which I will now proceed 
to give in detail. 
Upon receiving the living females, I at once placed them on a 
growing plant of grass, Bromus asper, and soon had the pleasure 
of seeing a few eggs deposited, some upon the blades of grass, 
others upon the gauze-covered glass jar in which the plant was 
placed ; they were laid singly, firmly adhering to whatever laid 
upon. The first lot of eggs were deposited on the 14th June. 
The ovum is one-thirty-second of an inch wide, being about 
one-fifth wider than high, of a somewhat compressed conical 
form, bulging a little below the middle, and becoming less in 
size on nearing the base, which is rounded at the edge; the base 
itself is slightly concave ; the crown is rounded; the operculum 
is small and rather sunken, and very finely punctured ; the entire 
surface is smooth, showing only faint granulations and mere 
indications of striations on the lower half, running from the 
middle to almost the base. It has a pearly appearance, being 
whitish or yellowish white in colour, with opaline reflections ; 
shortly before hatching the colouring becomes opaque, and a 
dark leaden spot appears at the crown, which is caused by the 
dark head of the larva showing through the shell. In ten days 
after the egg is deposited the young larva emerges by eating 
away the crown. The first egg hatched on June 24th. 
Directly after emergence the larva is one-twelfth of an inch 
ENTOM.—ocT. 1892. Y 
