J 



7 - /no 



311. 

 LATRIDIUS ELONGATUS. 



Order Coleoptera. Fam. Corticaridas Cu7't. — Xylo- 

 phagi Lai. 



Type of the Genus, Ips transversus Oliv. 



Latridius Herbst., hat., Gyl., Sam. — Tenebrio Lhin., DeG. — Der- 

 mestes Fab., Paijk., Punz. — Ips Oliv. — Corticaria Marsh. 

 Antenna: nearly as long as the thorax, inserted at the anterior 

 angles of the head, clavate, II -jointed, basal joint large globose, 

 2nd ovate larger than the six following which are slender, the 

 3rd joint being the smallest, 4th and 5th rather longer than 

 the (Jth, 7th, and 8th which are oval, the remainder forming an 

 articulated club, the 9th and 10th joints being cup-shaped, the 

 1 1th the largest subglobose, produced obliquely at the apex (6). 

 Labrnm very broad and short, semioval, anterior margin ciliated 

 and slightly depressed in the middle (I). 



Mandibles not exserted, coriaceous, corneous at the base, acute 

 and slightly bifid at the apex, membranous and ciliated inter- 

 nally (2). 



Maxilla terminated by a pilose lobe. Palpi short and robust, 

 triarticulate, 1st and 2nd joints large subglobose, 3rd smaller and 

 subcoriaceous with 2 or 3 hairs at the apex (3). 

 Mentum transverse hexagonal, broadest at the base. Palpi aris- 

 ing below the anterior angles, very short and biarticulate, basal 

 joint very large and globose, 2nd very minute. Labium short 

 broad and ciliated (4). 

 Head oblong or subovaie, broadest towards the base. Eyes lateral pro- 

 minent and not touching the Thorax, which is subquadrate-cordate 

 and much narrower than the elytra. Scutellum very minute. Elytra 

 very large and more or less oval. Wings very long. Thighs in- 

 crassated. Tibiae simple subclavate. Tarsi A'i-jointed, basal joint 

 very obscure, 2nd and 3rd of equal length, 4th very long. Claws 

 simple (5). 



Elongatus Curtis's Guide, Genus 243. n. 6. 



Pale castaneous. Head oblong coarsely punctured. Eyes black. 

 Thorax oblong, strangulated near the base, coarsely punctured; 

 sides margined and slightly recurved. Elytra very long and 

 twice as broad as the thorax, elliptical and depressed, each hav- 

 ing six rows of very large and strongly impressed punctures, 

 the space between the 4tli and 5th forming a sharp ridge. An- 

 tennae and legs sometimes paler and tinged with ochre. 



In the Cabinets of Mr. Walker, and the Author. 



An elaborate paper by Mr. J. F. Kyber relating to the oeco- 

 nomy of one of these little insects, will be found in the 2nd vol. 



