58 ORDER COLEOPTERA. 



Sn.piiA K07ES0KACENSIS. ( Plate xxii, fig. 0.) 



Body depressed : elytra rufous ; outer margin of the thorax light and rather bright red, 

 black beneath. 



Sii.rii\ Americana. ( Plate xx, fig. 3.) 



Depressed, Mack : thorax yellow, with a subquadrangular black spot in the centre ; elytra 



knobby, black or brownish black tipped with yellowish; outer angles truncate, or 

 rounded from the middle, and slightly notched at their inner and posterior angles, 

 forming a notch whin at rest : they arc marked by four rather irregular ridges. 



Genus XECRODES ( Wilkin). Silpha ( Linn.)- 

 Body oblong; elytra truncate; club of the antenna gradually thickened; maxilla? 

 ' without a claw' ( Westwood). 



Necrodes sviunami.nsis. ( Plate xx, fig. 4.) 



Depressed, black : thorax smooth and shining; elytra marked posteriorly with a short 

 rufous band, and traversed by three strongly marked sharp ridges, black beneath. 



MtiduMae. 



This family has the habits in pari of the silphidse, as some of them are found in putrid 

 animal matter, or feeding upon mushrooms ; others, however, frequent flowers. They are 

 oval, broad, and much depressed ; and they have filiform antenna?, terminating in a short 

 club of two or three joints. The thorax is transverse and emarginate : in some, the elytra 

 -ivrt. leaving the abdomen exposed. They are small insects. 



Genus NTTIDULA. 



• Body oval, subdepressed ; thorax margined; tibia compressed; fourth tarsal joint bi- 

 ' lobed ; third joint of antenna longer than the fourth' (Westwood). 



Nitidula bipustilata. ( Plate xviii, fig. 1.) 



Q .lor of the body and thorax dull brown : central part of the elytra marked by a patch 

 of lighter brown ; margin light brown. Length about two-tenths of an inch. 



