DERMESTID/E. MEGATOMA. 125 



under the bark of elms and oaks, where it may be found almost all 

 the year, particularly in the early spring months." 



Taken in several places within the metropolitan district, in Nor- 

 folk, &c, beneath the bark of trees, especially of elms and oaks, in 

 June : — also found upon palings, and in old wood, and in Boleti. 

 " Gardens at Chelsea. 1 '— Mr. Ingpen. " Kew." — Rev. T. T. 

 Haverfield. 



Genus CLXXII.— Megatoma, Herbst. 



Antenna; shorter than the thorax ; the basal joint very stout, oval ; the second 

 less robust, subglobose; the four following very slender, subovate; the 

 seventh and eighth rather larger, cup-shaped; the remainder forming a 

 Particulate, pubescent, club, having the terminal joint elongate-ovate, and 

 twice as long as the others, in the male; subconic, and scarcely elongated, 

 in the female; the penultimate joint short, transverse, in both sexes. Palpi 

 maxillary robust; the basal joint minute; the two following short, broad, 

 nearly equal in length ; the terminal large, ovate- truncate : head small, de- 

 flexed : thorax slightly trilobate ; the central lobe nearly obsolete : antepectus 

 produced over the mouth like a neckcloth: body narrow-oval: legs short, 

 slender; tibia? linear, simple; tarsi with the three intermediate joints 

 shortest. 



In the structure of the antenna? and palpi, this genus differs con- 

 siderably from the foregoing, as well as from the following; the 

 former not having the club serrated as in the preceding genus, 

 nor the terminal joint remarkably large, as in Attagenus; the 

 maxillary palpi having the two intermediate joints nearly of equal 

 length, and the terminal one ovate- trun cate ; not elongate and 

 attenuated, as in Attagenus, nor obliquely truncate, as in the pre- 

 ceding genus. x 



Sp. 1. undata. Nigra, pubescens, thoracis angulis, elytrorumque fasciis duabus 



remotis undulatis albidis. (Long. corp. if — 3 lin.) 

 De. undatus. Linne. — At. undatus. Steph. Catal. 95. JVo. 1012. 



Black, pubescent, minutely punctured, shining: thorax with the posterior 

 angles and a small spot before the scutellum clothed with white pubescence : 

 elytra slightly convex, with two undulated fasciae, composed of white scales, 

 the former before the middle interrupted, the other behind the middle towards 

 the apex : legs and antennae black ; tarsi piceous. 



This species varies considerably in size, as above indicated. 



Not very uncommon in the neighbourhood of London, through- 

 out which it appears to be pretty generally distributed, inhabiting 



