INSECTA — ORTHOPTERA, 
229 
internal structure, in a striking manner, with the Orthoptera proper. 
The other Neuroptera are essentially dilFerent, particularly in the num- 
ber of the gall vessels, of which eight at most are found, and in the sepa- 
ration of the two last plexus of nerves, which, in the Orthoptera are 
joined together. In the internal structure, as well as in other respects, 
the three primary divisions of the Neuroptera differ considerably from 
each other. The Panorpates are distinguished by the thin bag-like 
appendages of the genital organs, which, in the Hemerobii, are small and 
like pustules ; both agree in the simple receptaculum seminis, also in the 
form of the ovaries, which contain pectinated egg-tubes, in the compres- 
sed form of the testicles, the proportionably great length of the vasa 
deferentia, and the extraordinary shortness of the ductus ejaculatorius ; 
in this last point the Phryganece also agree, though widely different in 
other respects. The author explains the appendages which open into the 
ductus seminis as seminal bladders ; the contents of these generally long 
and bag-shaped vessels confirm this opinion, as they correspond to the 
appendages, generally in pairs, which open into the ductus ejaculatorius. 
Hemerobii. — Lefebvre (Guer. Mag. d. Zool. Ins. pi. 92) has described 
and figured a new and distinct species of Ascalaphus, A. Napoleo, from 
Swan River, in New Holland, and at the same time given an arrange- 
ment of the genus. He proposes to arrange it as a group, under the 
name of Ascalaphides, which will include two sub-divisions, — Oloph- 
thalmi and Schizophthalmi. This distribution into genera is as fol- 
lows : — 
I. Olophthalmi. — The anal-nippers in the male sometimes visible, some- 
times invisible : in the former case the wings either have an appendage, 
as in Ptynx {costatus, Burm.), or have not, as in Azesia {Napoleo, v. s.) 
In the latter case the wings are not appendaged as in Amoea {suh-costa- 
tus, Burm.) 
II. Schizophthalmi. — The anal-nippers in the male are sometimes 
visible, sometimes invisible. In the former case they are partly project- 
ing, either with lateral lobes at the anus, in the female, as in Deleprocto- 
phylla [australis, Lefeb.), or without them, and the anal nippers in the 
male strong, as in Proctarrelabis [hamatus, Kl., capensis, F ;, annuli- 
cornis, Burm. ; in the first the anal nippers are forked, in the others 
simple ; a new species differs from this latter, by the wings being repand 
at the inner margin), slight and simple as in Ascalaphus, with the hinder 
wings dilated at the inner margin [A.italicus, F., longicornis, ictericus, 
Charp, &c.), and as in Hyhris, with undilated hinder wings [javanus, 
Burm.) The anal-nippers are situated partly at the end of the abdomen, 
as in Acheron (one new species), with the wings projecting over the ab- 
domen, and antennae dentated at the base, on the inside. In the other 
case (anal nippers of the male not visible), the wings are either appen- 
dicled, as in Orphne [appendiculatus, F.), or not, as in Suhpctlacsa 
273 S 
