INSEGTA. 481 



Vntennse shorter than thorax, with first joint elongate, terminal 

 oints forming a club. Head often protracted anteriorly for a while. 

 D alps small, conical. 



A small family of small insects, called by the Germans Borken- 

 kafer, 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.) 

 e larvae have no feet, any more than those of the following family, 

 ith which the Scolytini, as already remarked by WESTWOOD, 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 pygmceus in the memoir of BLANCHAKD Ann. des Sc. nat. 

 Sie-me Serie, Tom. v. 1846, Zool PL 13, fig. 8. Some affinity with 

 the Scarabce'idea cannot be mistaken. 



Compare ERTCHSON Systematische Auseinandersetzung der Familie der 

 BorlcenTcdfer (Bostrichidae), WIEGMANN'S Archiv /. Naturgesch. 1836, 

 s. 4565' 



Platypus HERBST, LATH. Head exsert, broad, transverse. Tho- 

 elongato-cylindrical. Body cylindrico-linear. Antennae sexar- 

 culate, short, with last joint expanded into a club plane, ovate, 

 Tarsi with all the joints entire, first long, slender. 



Sp. Platypus cylindricus, Bostrlclius cylindrw FABR., PANZER Deutschl. Ins. 

 Heft 15, Tab. 2, RATZEBURG Forst-Ins. Tab. x. fig. I3 1 . 



Tomicus LATR., Bostrichus FABR. (in part). Head retracted, 

 1th thorax produced anteriorly above it. Antennae inserted in the 

 des of head between the base of the mandibles and the eyes. 

 farsi with all the joints entire. 



Sp. Tomicus typographus, Dermestes typography* L., PANZER Deutschl. Ins. 

 Heft 15, Tab. 3, RATZEBURG Forst-Ins. i. Tab. 12, fig. i ; 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 



itennal joint (in the male) has interiorly a curved process, and the tarsi five joints. 



Brazilian insect occasioned the formation of this genus, viz. Tesserocerus insiynis, 



agilis SFINOLA, GUERIN Magas. de Zool. 1839, ^ ns - P1 - 3- 

 VOL. I. 31 



