CLASS V. INSrCTA. 181 



Sp. 1. Pli. pcctiiiiconiis. Body blackish : elytra obscure brown : aii- 



teunrc and feet reddish : thorax rough : elytra punctote. 

 Ptilinus pectinicornis. Fabr., Oliv., Latr., Leach. Ptinus pectinicornis. 



Linn., Marsh. Dermestes pectinicornis. Linyi. ? 

 Inhabits old trees and houses, perforating them to destruction. 

 OBS.-^Ptinus scrraticonds, ]Marsham, is the female of this insect. 

 StirpS 2. — Antenna terminated by three joints diftering from the rest 



in size. 

 Genus 127. ANOBIUM. Fabr., Oliv., Lamarck, Latr., Leach. 

 Ptinus. Linn., De Ceer, Marsh. Erlchus. Geoff'. 

 Antenna: eleven-jointed, witli the three last joints abruptly thicker than 



the others; the ninth and tenth joints obconic; the tenth oval. 



* Flijtra not striated. 



Sp. 1. Anoh. tessellatum. Thorax bilobatc behind, the lateral margins re- 

 flexed : body fuscous, sprinkled with villose, obscure lutcous spots : 

 elj-tra not striated 



Anobium tessellatum. Fabr., Latr., Lxach. Ptinus tessellatus. Marsh. 



In)iabits the wood of rotten trees, especially willows, during the winter 

 months. 



** Eli/tra striated. 



Sp. 3. Anoh. striatum. Fuscous, with grayish down : thorax with a gib- 

 bous protuberance, unisulcate above, with the angles compressed: 

 hinder margins somewhat marginated : elytra longitudinally punctate. 



Anobium striatum. Latr., OLv., lllig., Leach. Anobium pcrtinax. 

 Fabr., Payk. 



Inhabits rotten trees. 



Fam. XV. Dermestidx. Leach. 



Dermestixi. Latreille. 



Antenna slender, longer than the head, and terminated by a large 

 ovoid mass. 



Stirps 1. — Sternum not produced to the moutli, or over it like a neck- 

 cloth : tibia spinose. 



Genus 128. DERMESTES. Linn., Fahr., Latr., Marsh., Herbst, 

 Oliv., Leach. 



Antenna with an ovate club, the last joint short, not (or but little) 

 longer than the preceding joint : bodi/ narrow oval : thorax with the 

 hinder margin straight or obtusely lobed : palpi very short : maxil- 

 lary palpi shorter than the maxilla?, or scarcely as long. 



Sp. i. Der.lurdarius. Black: base of the elytra with a cinereous band 

 with black points. 



Dermestes lardarius. Linn., Fabr. Latr., Marsh., Leach. 



Inhabits decayed animal substances, paper, &c. is common in houses. 



