538 CLASS VIII. 
Attagenus Latr. (Megatoma ejusd.), Megatoma Hersst, T'rogo- 
derma Latr., Tiresias Sturu., Anthrenus Grorrr. (Byrrhus L. 
exclusive of species), Z’rinodes Mxc. 
Sp. Anthrenus museorum, Dermestes (and Byrrhus) museorum L., PANZER 
Deutschl. Ins. Heft 100, Tab. 2, SturM Deutschl. Ins. 11. 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 Li). Antenne incrassated 
towards the apex, or clavate, with club distinctly articulate. Man- 
dibles denticulate. Maxille: with two lacinie. Palps incrassated at 
the apex, truncated. Head small, received in thorax. Feet con- 
tractile, with tarsi replicate towards the tibiz, and tibiee upon the 
femora. Tarsi with five joints. Body gibbous. 
Sp. Byrrhus pilula L., Panzer Deutschl. Ins. Heft 4, Tab. 3, Sturm 
Deutschl. Ins. 11. Tab. 33, &e. 
Cytilus Ericus. Palps with last joint acuminate. Antenne 
clavate. 
Sp. Byrrhus varius Fasr., PANZER Deutschl. Ins. Heft 32, Tab. 3. 
Limnichus Ziecu. 
Nosodendron Latr. 
Agathidium Iiuic. Antenne with eleven joints, clavate. Man- 
dibles strong, arcuate. Maxillee 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 Ertcuson Naturgesch. d. Ins. 
Deutschl. 111. pp. 87—134, Sturm Deutschl. Ins. ul. s. 53, &. Small 
coleoptera living in fungi and decaying trees. 
Anisotoma Knocu, ILuic. 
Note-—A genus much resembling the preceding, but with body not 
contractile into a ball. Feet stronger, with tibie 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. Ericson 1. 1. p. 44, whom see on the 
division of this genus. 
Pausus lu. Antenne large, very broad, with somewhat few 
joints, sometimes only with two or three, the last very large. 
