v EROTYLIDAE MYCETOPHAGIDAE COCCINELLIDAE 237 



in forests. AVe have only six species in Britain, and tin- 

 of Europe has only about two dozen, most of them insignificant 

 (and in the case of the Dacnides aberrant, approaching the 

 Cryptophagidae very closely). The sub-family Languriides (quite 

 wanting in Europe) consists of more elongate Insects, with front 

 acetabula open behind ; they have different habits from Eroty- 

 lides proper ; some are known to live as larvae in the stems of 

 herbaceous plants. They possess a highly developed stridulating 

 organ on the front of the head. The Clavicorn Polymorpha are 

 very closely connected with the Phytophaga by Languriides. 



Fam. 37. Mycetophagidae. Tarsi four-jointed, slender, the 

 front j'fi't of tin' male oaf// three-jointed; co..>:ae oral, //<>/ 

 embedded; abdomen with five ventral seg- 



V t/ 



me nt*, all murable. A small family, of in- 

 terest chiefly because of the anomaly in the 

 feet of the two sexes, for which it is im- 

 possible to assign any reason. The species 

 are small, uninteresting Insects that live 

 chiefly on Cryptogams of various kinds, 

 especially in connection with timber ; the 



larvae being also found there. There are - 



FIG. ]18. Litargus otfas- 



about a dozen species in Britain, and cintus. Mycetophagidae. 



i -i A A j -IIP 11 ii Britain. A, Larva (alter 



scarcely 100 are described from all the p erri -s);B, perfect lus^t. 



wi trld. The Diphyllides, placed by Leconte 



and Horn in this family, seem to go better in Cryptophagidae. 



Fam. 38. Coccinellidae (Lady-birds}. Tarsi apparently three- 

 jointed; the first two joints pubescent beneath; the third joint 

 consisting really of two joints, the small true tli/rd joint being 

 inserted near the base of the second joint, the upper surface of which 

 /x groon-d, to receive it. Head much concealed by the thorn.,. 

 Antennae feebly clubbed. The lady-birds number fully 2000 

 species. The structure of their feet distinguishes them from 

 nearly all other Coleoptera except Endomychidae, which are much 

 less rotund in form, and have larger antennae. One genus of 

 Endomychids Panomoea bears, however, a singular resemblance 

 to lady-birds, both in form and style of coloration. Several 

 species of Cocciuellidae are remarkable on account of the 

 numerous variations in colour they present. Coccinellidae 

 frequently multiply to an enormous extent, and are of great 

 value, as they destroy wholesale the plant-lice, scale -Insects, 



