62 BEETLES. 



Genus Lathridius, Herbst. 



Antenna3 formed of eleven joints, with the last three 

 enlarged. The pronotum is sharply ridged on the edges. 

 All the tarsi are three-jointed. There are a large number 

 of small species, which live especially on mouldy vegetable 

 matters. 



* L. minutus, Linn. Black or blackish-brown, with reddish- 

 ochreous antennae and legs. The thorax has two elongated 

 little pits upon it, and the elytra are uniformly and deeply 

 punctate-striate. Its length is 1 J mm. It is common in lichens, 

 in houses, and in mouldy substances. 



Family XVII. MYCETOPHAGID-ffi. 



Elliptical, slightly convex, and finely pubescent. Antennae 

 with eleven joints, gradually thickened, or with two or three 

 larger joints at the end. Tarsi with four joints, except the 

 front ones, which have only three in the males. They are 

 found in fungi growing on trees, and under bark. 



Genus Mycetophagus, Hellw. 



Eyes oblique, emarginate in front. Antennae gradually 

 thickened towards the apex. Body elongated. Pronotum 

 with a deep depression on each side at the posterior border. 

 The elytra are punctate-striate. They live in tree-fungi. 



* M. quadri]02istulaf'iis, Linn. (Plate VI., Fig. 20). This is 

 an elongated species. The first six joints of the antennae are 

 red. the next four brown, and the terminal one oval and 

 pointed. The elytra are black with two brick-red spots on 

 each side. It is met with in tree-fungi, and in rotten oaks. 



Genus Typh^a, Kirby. 

 Body elongated; pronotum with the margins entire. The 



