vo! ee, 
INSECTA. 481 
Antenne shorter than thorax, with first joint elongate, terminal 
joints forming a club. Head often protracted anteriorly for a while. 
Palps small, conical. 
A small family of small insects, called by the Germans Borken- 
kifer, bark-beetles, although many do not live in the outer bark 
(Borke), but in the bast or liber and some in the wood. Some of 
the species cause great injury to needle-leafed trees (fir, larch, &c.) 
The larve have no feet, any more than those of the following family, 
with which the Scolytini, as already remarked by WEstwoop, might 
almost be united. Also the nervous system confirms the affinity. 
In the abdomen there is no chain of ganglia, but they are all united 
to form a single ganglion oblongo-conical, which is situated close to 
the second thoracic ganglia (formed from the union of those of the 
meso- and metathorax). See the figure of the nervous system of 
Scolytus pygmeus in the memoir of BLancHarD Ann. des Sc. nat. 
3iéme Série, Tom. v. 1846, Zool. Pl. 13, fig. 8. Some affinity with 
the Scarabeidea cannot be mistaken. 
Compare Ertcuson Systematische Auseinandersetzung der Familie der 
Borkenkdfer (Bostrichide), Wiramann’s Archiv f. Naturgesch. 1836, 
8. 45—65. — 
Platypus Herpst, Later. Head exsert, broad, transverse. Tho- 
rax elongato-cylindrical. Body cylindrico-linear. Antenne sexar- 
ticulate, short, with last joint expanded into a club plane, ovate, 
large. Tarsi with all the joints entire, first long, slender. 
Sp. Platypus cylindricus, Bostrichus cylindrus FAaBR., PanzER Deutschl. Ins. 
Heft 15, Tab. 2, RatzeBure Forst-Ins. Tab. x. fig. 131. 
Tomicus LATR., Bostrichus Fase. (in part). Head retracted, 
with thorax produced anteriorly above it. Antenne inserted in the 
sides of head between the base of the mandibles and the eyes. 
Tarsi with all the joints entire. 
Sp. Tomicus typographus, Dermestes typographus L., PAnzER Deutschl. Ins. 
Heft 15, Tab. 3, Ratzepure Forst-Jns. 1. Tab. 12, fig. 1 ; forms in fir- 
trees beneath the bark labyrinths and passages resembling letters or 
characters ; hence the name of Typographer. 
1 Here also seems to be the place of Tesserocerus SAUNDERS, where the first 
antennal joint (in the male) has interiorly a curved process, and the tarsi five joints. 
A Brasilian insect occasioned the formation of this genus, viz. Tesserocerus insignis, 
Damicerus agilis SPinoLa, GUERIN Magas. de Zool. 1839, Ins. Pl. 3. 
VOL. f. ot 
