CLASS V. INSF.CTA. 207 



Genus 5Q3. MONOTOlNIA. Herbst, Leach. Cerytox. Latr. 



Body elongate, linear: thorax quadrate, with the hinder margin 

 distant from the base oi' the elytra: abdomen somewhat peduncu- 

 kited. 



Sp. 1. 3/t)/J. Juglandis. 



Lvctus Juglandis. Fabr., Finfk.,Panz. Corticaria taxicornis. Manh. 



Inhabits Europe, under the bark of the stumps of trees, particularly 

 those in damp situations. 



Fam. liL. Mycetophagidx. Leach. 



Body ovoid or oblong ; in some depressed, in others linear : palpi fili- 

 form or bent at their extremities : antenna eleven-jointed : mandibles 

 little or not at all prominent. 



SxiRPS 1. — Antennce gradually thickening towards their extremities. 

 Tarsi with the first joint longer than the following one. 



Genus 224. MYCETOPHAGUS. Fabr.,Payk., Oliv., Pun:., Latr., 

 Leach. Tritoma. Geoff". Dermestes. Thunb. Sii.puoiues. 

 Herbst. Boletaria. Marsh. 

 Body oval : antenna with the last joint elongate, ovate : ma.vil la ry palpi 



prominent. 

 Sp. 1. Myc. quadripustulatus. 

 Mycetophagus quadripustulatus. Pabr., Latr., Panz., Payk. Boletaria 



quadripustulata. Marsh. 

 Inhabits fungi. 



Stirps 2. — Antenna gradually thickening towards their extremities, or 

 with a three-jointed club. 



a. Tarsi with the first joint longer than the second. Palpi very 

 short, the maxillary ones but little or not at all prominent. Antenna 

 as l»ng as the thoi'ux or less. 



Genus 225. LATRTDIUS. Herbst, Leach. Ips. Oliv. Corti- 

 caria. Marsham. Dermestes. Fair., Paykull. 



Antenna with the second joint larger than the thirds 



Sp. 1. Lat. porcatus. 



Latridius porcatus. Herbst, Leach. Latridius minutuii. Lair. Der- 

 mestes marginatus. Paykull. 

 Inhabits damp paper and old wood in houses. 



