FAMILY MELOLONTHID^. 71 



Trox capillaris. ( Plate xxiv, fig. 1 .) 



Brown, dull : elytra traversed by several rows of pointed or sharpened tubercles, standing 

 between the fine parallel lines. Length two-fifths of an inch. 



Dynastidae. 



This family embraces the most gigantic beetles known : the genera are also numerous. 

 The antennae are ten-jointed : the first is robust, conic and hairy ; the second, sub- 

 globose ; the next five are short, and the head is composed of three laminae in contact. 

 The clypeus is frequently horned, as well as the thorax : head subtrigonal ; e]ytia 

 truncate, leaving the end of the abdomen bare. The body is large and thick, the legs 

 strong ; tibiffi broad and dentate. 

 This singular family have some of the habits of the GKOTRUPiDiE : that of subsisting 



upon and in the excrement of animals, and decaying refuse matter from the vegetable 



kingdom. 



MelolontMdae. 



Genus SERICA ( Macleay). ScARABicus (Linn.). 



* Form ovate. Antennae ten-jointed ; basal joint the largest ; the second the next, and the 

 ' claws bifid : last joint of the palpi subacute ' ( Westwood). 



Serica vespertina. ( Plate xxiv, fig. 9.) 



Color light chestnut-brown, imiform : body small ; wider behind. 



Triciiinds ( Trichius) viridans. ( Plate xxiv, fig. 5.) 



Color of the head and thorax green : elytra obscurely striped ; margins marked with dark 

 spots ; disk ferruginous, truncate, exposing the abdomen, punctured and marked by 

 longitudinal lines ; abdomen hairy. 



Trichii(us assimilis. 

 Color black, hairy and glossy. Elytra marked near their bases with a light brownish patch,, 

 from each outer angle of which proceed two white oblique lines that nearly reach the 

 margins ; and from the inner angles, two other white lines arise, which run parallel 

 with the suture, and do not quite reach the truncated extremity : there is also an- 

 obscure line parallel with the last, and about half as long, which may not be constant.. 

 Posterior segment of tlie abdomen clothed with a dense coat of yellowish white liairs :; 

 abdomen below shining, and less hairy than the breast. Length rather more than, 

 one fourth of an inch. 

 Found in Western Massachusetts. 



