INSECTA. 
614 
very brilliant. [They are called Japan-Moths.] A. De Geerella, Reaumurella, &c. [The former figured in the 
plate of Moths in the EntomologisVs Text JSooA.] 
The tenth and last section of the Nocturnal Lepidoptera, that of the Pterophorites, has great 
affinity with the preceding in the narrow form and length of the body and wings, but differs in having 
the wings slit through their whole length, like branches, or bearded fingers, like feathers. Their wings 
thus imitate those of birds. Linnaeus united them in his division of PJialcena Alucita. De Geer named 
them Phalcence-Tipules. 
We form them, with Fabricius and Geoffroy, into the subgenus Pterophorus, the caterpillars of which have sixteen 
feet, and feed on leaves and flowers, and do not form a case. The palpi are recurved from the base, and not longer 
than the head ; the chrysalides are naked, setose, or tubercular. P. pentadactylus, Linn., the White Plumed 
Moth. A very common species. 
Orneodes, Latr., has the palpi advanced, longer than the head, and the chrysalis is inclosed in a silken cocoon, 
P. hexadactylus, Linn., &c. 
THE ELEVENTH ORDER OF INSECTS,— 
THE RHIPIPTERA,— 
Previously established by Mr. Kirby under the name of Strepsiptera (or Twisted Wings), 
[and whieh has been fully proved by recent observations to have been correctly named, and 
that Latreille’s name, Rhipiptera, ought no longer to be applied to it], is composed of some 
very singular insects, anomalous both in their structure and habits. 
At the sides of the anterior extremity of the thorax, near the neck, and at the outer base of 
the two fore-legs [but in reality originating upon the very short and collar-like mesothorax], 
are attached a pair of small, crustaceous, moveable organs, like small elytra, bent backwards, 
narrow, elongated, clubbed, and curved at the tip, and terminating at the origin of the wings. 
[Latreille then contends that these pre-balancers are not representatives of the elytra, but of 
the pieces termed ptergodes, observed at the base of the wings of the Lepidoptera ; but it 
has been proved that they are the real representatives of elytra.] The wdngs of the Rhipiptera 
are large, membranous, divided by longitudinal nervures, and folding lengthwise, like a fan. 
The mouth is composed of four pieces, of which two are short, and appear like a pair of two- 
jointed palpi ; and the other two are inserted near the inner base of the preceding, in the form 
of small linear plates, pointed, and crossing each other at the tip, like the mandibles of many 
insects ; they more nearly resemble the lancets of the mouth of some Diptera than true man- 
dibles. According to Savigny, the mouth is composed of a labrum, two mandibles, two maxillae, 
each supporting a pair of small exarticulate palpi, and of a lower lip without palpi.] The head 
is further furnished with a pair of large hemispherical eyes, somewhat pedunculated ; two 
antennae, approximating at the base on a common elevation, nearly filiform, short, and com- 
posed of three joints, the two first being very short and the third very long, divided from its 
base into two long compressed branches, which are applied against each other. The ocelli 
are wanting. The thorax [supposed by Latreille to bear] in its form and divisions much 
resemblance to that of many Cicadce, Psylla, and Chrysis, [is now shown to be quite anomalous 
in its structure, consisting of a ring-like pro- and meso-thorax, and an immense metathorax] ; 
the abdomen is subcylindric, 8- or 9- jointed, and terminated by appendages analogous to 
those of the above-mentioned Hemiptera. The legs, six in number, are nearly membranous, 
compressed, of nearly equal size, and terminated by filiform tarsi composed of four mem- 
branous joints, vesiculose at their tips, the last being rather larger than the others, without 
terminal ungues. The four fore-legs are close together, but the two others are placed far 
I 
