COLEOPTERA. 461 



impressions; elytra striate and punctured. Very common, in 

 the evening, in the less inhabited parts of houses, flour mills, 

 bake-houses, on old walls, &c. 



Its larva is long, cylindrical, of an ochreous yellow colour, 

 scaly, and very smooth. It lives in bran and flour, .and is given 

 to the Nightingales. It becomes a chrysalis in the midst of 

 the substance on which if has fed. 



T. grandis, which is found in Brazil, under the bark of old 

 trees, darts a caustic liquid from its anus to the distance of 

 more than a foot. Other but smaller species from the same 

 country completely cover themselves with this material. For 

 these observations I am indebted to M. de la Cordaire(l). 

 There, the penultimate joint of the tarsi is very small, in the form 

 of a little knot, and received into a longitudinal groove in the pre- 

 ceding, which is more dilated than the preceding ones, and almost 

 cordiform. 



The anterior edge of the head presents an emargination occupied 

 by a portion of the labrum. 



Heterotarsus, Lat. 



A subgenus founded on an Insect from Senegal, having all the 

 characters of a Tenebrio, but with singular tarsi. At the first 

 glance, the two anterior ones appear to consist of but four joints, . 

 and the two others, of three. 



FAMILY II. 



TAXICORNES. 



In this second family of the heteromerous Coleoptera, we 

 find no small corneous tooth on the inner side of the maxillae. 

 All these Insects are winged, their hody is most commonly 

 square, their thorax trapezoidal or semicircular, and conceal- 

 ing or receiving the head. The antennae, usually inserted 

 under a marginal projection of the sides of the head, are short, 

 more or less perfoliate or granose, .enlarge insensibly, or ter- 

 minate in a club. The legs are only adapted for walking, 



(1) For the other species, see Catalogue, &c, Dej., and Fabricius. This genus, 

 however, as now composed needs depuration; several of its species belong to 

 Phaleria, or other subgenera. Some of them may even form new ones. 



