PSYCHE. 
coarsely striated throughout most of 
their mass and to be of two sorts. In 
one sort the length is 0.7 mm. and the 
breadth 0.03 mm.; the anterior ex- 
tremity is rounded, commencing sud- 
denly yet slightly to diminish in size at 
about 0.03 mm. from the end; while the 
slightly covered posterior extremity 
tapers gradually and regularly for a 
Die 
distance of about.0.06 mm. to a blunt 
point. The other sort are shorter, club- 
like filaments, 0.145 mm. long, slightly 
curved. with a transparent 
0.045 mm. long, and about 0.01 mm. 
in diameter, beyond which they rapidly 
expand to a club-like scale, sometimes 
0.05 mm. broad. 
peduncle 
6. THE LARVA OF HAMADRYAS I0, OF EUROPE. 
Muscular system. From the anterior 
end of the inner strip of longitudinal 
body-muscles attached to the under sur- 
face of each segment, a slender ribbon 
of muscular fibres runs obliquely to the 
posterior end of the same segment and 
is attached at the ventral line. Just 
above the spiracles on each side there 
appear at first to be only two slightly 
separated muscular bands, the third, 
that lying next the tracheae, being very 
inconspicuous. The investing muscles 
of the stomach are thicker than in Danis 
and arranged in a manner resembling 
those of Euphoeades. 
Digestive system. At the middle of 
the seventh abdominal segment the ali- 
mentary canal suddenly contracts as in 
Danais, but immediately afterwards 
expands into a pyloric vessel and then 
again contracts; the stomach, when 
empty, is fusiform, and bears interiorly 
seven or eight longitudinal ridges ; the in- 
testine and colon together form less than 
one-fourth of the whole intestinal canal. 
The salivary glands are beaded, cir- 
cular, scarcely tapering tubes, 4.5 mm. 
long, straight, and following the sides 
of the oesophagus at the base. 
The malpighian vessels originate in a 
reniform sac, one millimetre long, which 
sends off a branch at right angles, a very 
short distance beyond its tip, and ata 
millimetre’s distance further divides into 
two equal branches. The under branch 
passes forward in a tortuous course 
over the same track as in Danais, 
reaching a little way beyond the ganglion 
of the fifth abdominal segment. 
Circulatory system. The dorsal vessel 
is free and very slender (about the size 
of the nervous cord) as far as the mid- 
dle of the third abdominal segment, where 
it is attached above to the integument, 
and then suddenly expands to a much 
larger size, which it retains for some 
distance, and finally, in the seventh and 
eighth segments, expands again to a 
fusiform reservoir and then tapers to its 
extremity ; in the head and first thoracic 
segment it is bordered by lobes of fatty 
matter composed of an amorphous mass 
of granulated material, differing from the 
alae of the dorsal vessel posteriorly, in 
that in the latter these granulations are 
mingled with and form part of cords of 
tissue running at right or nearly right 
angles to the dorsal vessel; the dorsai 
vessel is very elastic and flexible, and 
when one side is pulled, even pretty 
forcibly, the other remains in place. 
( To be continued.) 
