418 
ZOOLOGICAL LITERATURE. 
the condition: of the stipites^ of the labial palpi^ which are 
either free and moveable by themselves, or have coalesced with 
the lin^a and thus lost their independent movements, or, 
finally, have coalesced with each, other longitudinally, but not 
with the lingua, so as to be moveable, but only in unison with 
each other.^^ The characters of these types are fully discussed 
by the author, and their connexion with the mode of life of the 
animals is pointed out. Schjodte calls attention to the minute 
pores or cavities, each with a very short pellucid, hair at the 
bottom, which occm* all over the surface, or in certain circum- 
scribed spots on the antennae of the Cerambycidae, and to the 
arrangement of which he ascribes considerable systematic im- 
portance. He gives flie name of flying hairs \pili volatiles) 
to the long, soft hairs which project from the body, limbs, and 
antennae of many Cerambycidae, and which he regards as aiding 
flight by giving a larger surface to the insect, without mate- 
rially increasing its weight. The author also describes the ana- 
tomical structure of the Cerambycidae. 
Schjodte makes the following observations upon the syste- 
matic position of certain exotic genera : — 
Tropidosoma, TragoceruSf V(£cilopeplas, CcroctenuS) and I^orcasomus belong 
to Cerambycini j SpondyUs belongs to Prionini instead of forming a distinct 
group j Rosalia belongs to the Callidini \ Tdropium, Asemum, and Oi'ioce- 
phalum form a new group, Asemini, approaching Prianini j the IIes2)ero- 
phani, Clyti, Obrii, and GradUni belong to Cei'ambycini j the group Necyda- 
lini must be dissolved, Necydalis being united with Leplurinif and Molorchus 
with Cerambycini j Stenoptcrus is closely allied to Callidini j the Lamiini close 
the himily, being most nearly related to the Chrysomelidi© \ Vesperm forms a 
peculiar group between Asemini and Prionini, differing from the latter only 
in the structure of its antennae and Rhamnnsium belongs to Callidini. 
The characters derived from the abbreviation and narrowing 
of the elytra are regarded by Schjodte as of little systematic 
value, and, indeed, as having by their adoption done more mis- 
chief than any others. The following table shows the an thorns 
classification as applied to the Danish forms of this family : — 
Type I. Stipites palporum labialium lixi, basi concreti, linguai adnati. 
Prionini : — SjwtAylis , Prionus . 
Vesperini ; — No Danish species. 
Asemini: — Tetropium, Criocephalum, Asemum. 
Type II. Stipites palporum labialium mobiles, discreti, in fulcrum labii 
retractiles. 
Cerambycini ; — Cerambyx, Callichroma, Clytus, Gracilia, Molorchus, 
Callidimn, Rhamnusium. 
Lepturini : — Rhayimn, Toxotus, Pachyta, Leptura, Necydalis. 
Lamiini : — Astynomus, Liopiis, Acanthoderes, Exocentrus, Poycmochems, 
Lamia, Monochamus, Leparyus, Mesosa, Ayapanthia, Saperda, Tetrops, 
Stenostola, Oberca, Phylcccia. 
