ORDER COLEOPTERA. 295 



than the head, and always with four distinct articulations. 

 The anterior has at least one denticulated or spinous at the 

 interior side. The tarsi, which, in the majority, fold back 

 on the limbs, have the last articulation as long, or longer than 

 the preceding taken together. The first, or the first two, 

 are visually so small, or so concealed, that their total number 

 does not appear to be but two or three. 



The front of the head, and sometimes even the corslet, is 

 armed with horns in many of the males. The antennae are 

 inserted in front of the eyes. 



Some whose palpi terminate in an oval form, whose antennae 

 are for the most part grained, and go on thickening, present 

 distinctly but three articulations in the tarsi. With the ex- 

 ception of the Trachini, the anterior tarsi are not more 

 notably dilated. 



OxYTELUs, Grav.* 



The others have the filiform palpi and four articulations, 

 at least, very apparent in the tarsi. 



OsoRius, Leach, Dej. 



Have the body cylindrical, all the limbs widened and den- 

 tated, the head as long as broad, the corslet almost in the 

 form of a heart, narrowed and truncated posteriorly, and the 

 antennae for the most part grained, thickening insensibly 

 towards the end, and shorter than the head and corslet, the 

 mandibles much shorter than the head, very much crossed, 

 and terminated in a single point, and the mentum large and 

 buckler-formed. 



* See the article Oxytele of the Encyc. Method. The fore-cited Mo- 

 nograph of M. Gravenhorst, and Gyllenhall, Insect. Suec. I. Part II. 

 p. 144. 



