ELATERID./E. — CAMFYLU8. 279 



each sex not undergoing the slightest change, positively belong to one species, 

 the fact of my having repeatedly taken the insects in copula proves in- 

 disputably; a point I am here induced to notice from a difference of opinion 

 prevailing amongst entomologists who have not had the opportunity of cap- 

 turing the insects in plenty. 



Extremely abundant in certain years in Coombe-wood, towards 

 the end of June; I have also taken the insect in the hedges about 

 Darenth and Birch woods, and occasionally at Ripley, Dover, and 

 Hertford : it also occurs in Norfolk. " Baron-wood."" — T. C. 

 Heysham, Esq. " Woods near Cambridge." — C. Darwin, Esq. 

 " Epping." — Mr. Doubleday. " Stockton-common, near York; and 

 near Newcastle." — W. C.Heio'rison, Esq. " In moist woods about 

 Penllergare, and woody parts of Crwmlyn-bog." — L. W. DillwyUy 

 Esq. " Common near Kimpton." — Rev. G. T. Rudd. 



Subsection IV. 



Antennas 11- rarely 10-jointed, mostly elongated, more or less serrated, or pec- 

 tinated ; occasionally with the three terminal joints more robust (sometimes 

 considerably, and suddenly, elongated) : or clavate, the club composed of com- 

 pactly united articulations : head nutant, in some instances somewhat pro- 

 duced into a rostrum anteriorly, in general deeply inserted in the thorax, 

 which is more or less semicircular or subquadrate, sometimes cylindric or sub- 

 cordate : body soft and depressed, or of a firm consistence and more or less 

 cylindric and elongate: legs rather long; tarsi five- or four-jointed, the pen- 

 ultimate joint frequently bilobed. 



There is considerable diversity of appearance amongst the in- 

 sects of this subdivision; nevertheless, although they seem to 

 form a group sufficiently natural to allow of being associated to- 

 gether, it appears useful to divide them into the subjoined families, 

 concisely distinguished by the following external characters : 



fhaud bifurcati : 34. Cebrionidje. 

 ( filiformes ; labiales < 

 fbifido: £furcati: . 35. CvriioxiDJE. 



Palpi \ 

 I maxillares | f valde approximate : 3G. LabipyriDjE. 



f filiformes vel ) Lapicecrassiores. j 



I setaceae. Tarsi -[ Antennarum basi j 



art' pi-nultimo I £haud approximate 37. Telephorid^e. 



fremoti: . 38. Melyrid.e. 



^haudbifido: Antennarum basi < 

 ( art-s3-s ultimis subito lor.gioribus: f approximati : 40. Ptinidjz. 

 *^ i cxtrorsum < 



J crassiores, ( articulo ultimo magno: .... 30. Tillid/e. 



Lclavatae, clava subsolida: ... 41. Tostrichid/e. 



Mandibulata. Vol. III. 31st Dec. 1830. u 



