COLEOPTERA. LYMEXYLOXID^. 273 



library in London, crawling upon the ceilings, where it had probably 

 escaped from the decayed bodies of some of his exotic insects. 



M. V. Audouin has communicated to me some observations upon a 

 new species of Dorcatorna, which he reared from a small larva, dis- 

 covered feeding upon a subcortical species of moss. 



The Anobium tessellatum is the largest British species belonging to 

 the family. I have reared it from larvae found in rotten whitethorn 

 wood, in which it has remained more than three years before it ar- 

 rived at the perfect state. I have represented its larva ^Xjig. 30. ll. ; 

 Dr. Ratzeburg has also published a figure of this larva in his Forst- 

 Tnsecten, pi. 2. fig. 19. B. M. Dufour has published a valuable 

 memoir on the internal anatomy of this genus. (Anfial. Scienc. Nat. 

 1828.) 



The Dryophilus anobioides was first discovered by me, many years 

 ago, near London. It has since occurred at Coombe Wood, upon the 

 broom, in the spring. I have published some observations upon it in 

 the Entomological Magazine (vol. ii. p. 1 1 2.). 



The exotic genera of this family do not present any material 

 features worthy of comment. 



The eighth family, Lymexylonid^*, corresponding with the Fa- 

 brician genus Lymexylon, is composed of some of the most remarkable 

 Coleopterous insects hitherto discovered. It is of small extent, and 

 comprises those serricorn beetles which have the head separated from 

 the thorax by a narrow neck ; the presternum is not produced into a 

 point behind ; the mandibles short, thick, and obtusely bidentate 

 (^fig- 30. 20. mandible of Hylecoetus ? .) ; the body is linear, and of 

 a moderately soft consistence (^Jig. 30. 16. Lymexylon navale $ ) ; the 

 antennae are short, and the maxillary palpi of the males are furnished 



* BiBLioGR. Refer, to the Lvmexylonid.t.. 



Guerin. Icon. R. An. Inscctcs. 

 Pcrty. Del. An. Art. Brasilia-. 

 Sturm, Deutclislands Fauna, vol. xi. 

 Westwood, in Zool. Journal (Rhysodes and allies). 



Palisot Bemivois. Menioire sur un nouv. genre ( Atractocerus) Magazin En- 

 cycl. 8vo. 



T 



