170 HOUi-RN SYSTEM. 



Sp. 1, Thijm. ferrugineus. 



Inhabits beneath the bark of trees. 



Genus 99. NITIDULA. Linn., Tuhr., Paj/k., Olivier, Marsh., 



Leach. 



JlJfl/«//.Vcs prominent : Wy short, depressed ; back plain: ^/joraj? gene- 

 rally broad : antenna with the third joint twice as long as the second; 

 club abrupt and orbicular, composed of three joints. 



Sp. 1. Nit. bipuatuhda. Body elliptic, brown, blackish : thocax emargi- 

 nute ; elytra with a red spot on each. 



Nitiduia bipustulata. Linn., Lair., Fair., Marsh. 



Sp. '2. Nit. discnidca. (PL ^.fg. 5. a. antenna magnified^ 



Is; it. discoidea. Marsh. 



Inhabits dead carcases, dried bones, holeti, and under the bark of 

 trees. 



Genus 100. IPS. Tuhr., Htrhst, Gi/IL, Leach. Nitidula. Lutr. 



Mnndihlcs prominent, strong, and nuich bent at their points : body 

 elongate-quadrate ; back plain : thorax transverse-quadrate : an- 

 tenntc with the third joint twice as long as the second; club abrupt 

 and orbicular, composed of throe joints. 



Sp. 1 . Jps qiiadripustulatus. 



Inhabits the decayed stumps of trees under the bark. 



Genus 101. BITURUS. Latr., Leach. Ips. Olirier. Deemestes. 

 Geoff., ]Je Oeer, Fabr. 



A'ifcnna with the third joint not twice as long as the following joint ; 

 club composed of three joints : mandibles prominent : bodj/ oval or 

 oblong; back plain: thorax hroad behind, with the angles pointed: 

 c/i/tra covcrinir the abdomen. 



Sp. 1 . Bit. towentosns. AntcnnEe shorter than the thorax : thorax 

 short, the posterior angles broadly depressed, reflected ; body oval, 

 Itlack, with a reddish-yellow down ; antennse and feet yellow 

 red. 



Inhabits the white-thorn and lunbelliferous plants in May and June. 



Genus 102. CATEllETES. Herbst, Latr., Leach. Brachyptet 

 Kus. Ki/gcl/an. Dekmestes. Linn., Fabr. Steoxgylus. 

 Herbst. NiTiDVLA. Oliv. Cercus. Latr. 

 Antenna with the third and following joint scarcely differing in length ; 

 club compressed, perfoliate, obconic, composed of three joints; tho- 

 rax rounded, without angles behind : el</tra very short : body de- 

 pressed, back plain : mandib/cs prominent. 

 Sp. 1. Cat. rnfilabris. Black, shining, with gray down* 

 Orcus rnfilabris. Ixdr. 

 Inhabits junct near Hull. • 



