204 Ins. 
NEUROPTERA. 
Mallophaqa. 
Piaget, E. Les P^diculines. Essai monograph ique ; i. texte (pp. i.- 
xxxix. & 1-714), ii. planches (i.-lvi.). Leide : 1880, folio. 
The most important work on these animals that has appeared since the 
publication of Nitzsch’s posthumous “ Insecta Epizoa,” edited by Giebel 
[c/. Zool. Eec. xi. p. 453]. The copious introduction contains a biblio- 
graphical sketch from the earliest]authors (by whom lice were considered 
to be generated spontaneously) to date, marked by most unsparing 
criticism in many cases, more especially with regard to Denny & Giebel. 
The author does not consider the evident difference in the mouth-parts 
as of more than family importance, and hence places both Anoplura and 
Mallophaga as forming only a degraded division of lihynchota. His 
tabular division of this group is as follows : — 
1 Lice with a sucker and only one claw (Haustellata) . 
Lice with mandibles, without a distinct sucker, and 
with one or two claws {Mallophaga)^ 2. 
2 Antennae 5- or 3-jointed ; tarsi without cushions, 3 . 
Antennae 4-jointed ; tarsi with or without cushions, 4 
' 3 Antennae 6-jointed ....... 
Antennae 3-jointed 
4 Tarsi with 2 claws, and with a cushion 
Tarsi with 1 claw, and without cushion 
PEDICULIDA3. 
PHILOPTERIDA5. 
Liotheid^. 
Philopterus. 
Trichodectes. 
Liotheum. 
Gryopus. 
Then follow directions for collecting and preserving these parasites, 
with notes on the parts of the bodies of their hosts mostly frequented by 
the various groups. The principal feature in the descriptions and figures 
is the prominence given to sexual characters, hitherto little understood. 
Each genus is divided into groups, for the most part founded on the 
families of their hosts, which appears also to be to a largo extent natural. 
Many previously known species are re-figured, but it does not appear 
necessary to cite these figures. The work concludes with addenda, a 
table of species classified according to their hosts, an alphabetical table 
of genera and species, and a systematic index (cf. Rhynchota for the 
family PediculidcB). As to the families, Philopteridce are divided into 9 
genera (of which 1 is new), and Liotheidce into 10 (1 new). 
Philopteridce. 
New genus : — 
AhidoproctuSy g. n., p. 208. Front of head deeply crenulate; the last 
abdominal segment conical and even acuminate. Includes Nirmus steno- 
pygus, Nitzsch, and 3 spp. nn., A. marginatus, p. 209, pi. xvii. fig. 4, on 
Larus spinicauda^ A. bifasciatus, p. 210, pi. xvii. fig. 6, on Dramas 
ardeola, and A. maximus, p. 212, pi. xvii. fig. 6, on Dendrocygna arborea. 
New species, : — 
Docophorus nudipes, p. 26, pi. i. fig. 6 (on Brachyotus otus), angusto- 
clypeatus, p. 34, pi. ii. fig. 3 (on Platycercus barrabandi), assimilis, p. 35, 
