538 CLASS VIIT. 



Attagenus LATR. (Megatoma ejusd.), Megatoma HERBST, Trogo- 

 derma LATR., Tiresias STEPH., Anthrenus GEOFFR. (Byrrhus L. 

 exclusive of species), Trinodes MEG. 



Sp. Anthrenus museorum, Dermestes (and Byrrhus) museorum L., PANZER 

 Deutsckl. Ins. Heft 100, Tab. i y STURM Deulschl. Ins. n. Tab. 37. The 

 larva is hairy ; particularly there are bundles of long hairs at the posterior 

 extremity, with dart-shaped points very elegant under the microscope. 



Byrrhus auct. (species of Byrrhus L). Antennse incrassated 

 towards the apex, or clavate, with club distinctly articulate. Man- 

 dibles denticulate. Maxillae with two lacinias. Palps incrassated at 

 the apex, truncated. Head small, received in thorax. Feet con- 

 tractile, with tarsi replicate towards the tibiae, and tibia3 upon the 

 femora. Tarsi with five joints. Body gibbous. 



Sp. ByrrTius pilula L., PANZER DeutscU. Ins. Heft 4, Tab. 3, STURM 

 Deutsckl. Ins. n. Tab. 33, &c. 



Cytilus ERICHS. Palps with last joint acuminate. Antennae 

 clavate. 



Sp. Byrrhus varius FABR., PANZER DeutscJil. Ins. Heft 32, Tab. 3. 



Limnichus ZIEGL. 

 Nosodendron LATR. 



Agathidium ILLIG. Antennae with eleven joints, clavate. Man- 

 dibles strong, arcuate. Maxillae with two lobes. Palps filiform. 

 Head nutant. Abdomen with six ventral segments. Elytra en- 

 tirely covering abdomen. Feet somewhat slender, with tarsi of 

 posterior feet in males, sometimes also of middle or of all the feet in 

 females, quadriarticulate. Body contractile into a ball. 



Compare on this genus and its division ERICHSON Naturgesch. d. Ins. 

 DeutscU. in. pp. 87134, STURM DeutscU. Ins. u. s. 53, &c. Small 

 colepptera living in fungi and decaying trees. 



Anisotoma KNOCK, ILLIG. 



Note. A genus much resembling the preceding, but with body not 

 contractile into a ball. Feet stronger, with tibiae spinose. All the tarsi 

 in some five-jointed, in others the posterior or middle four-jointed, or 

 anterior four-jointed, middle and posterior three-jointed, the number how- 

 ever not differing with the sex. ERICHSON 1. 1. p. 44, whom see on the 

 division of this genus. 



Pausus L. Antennae large, very broad, with somewhat few 

 joints, sometimes only with two or three, the last very large. 



