184 CLASS INSECTA. 



Some have the crotchets of the tarsi simple, or without 

 denticulations, disposed in the manner of a comb. 



We shall commence with those whose head is not narrowed 

 abruptly at its posterior extremity, and is not attached to 

 the corslet, by a sort of neck suddenly formed, or a kind of 

 rotula. The corslet is always in the form of a truncated 

 heart. The external palpi are never terminated by an arti- 

 culation much more thick, and hatchet-formed. The two 

 anterior tarsi of the males are either not at all, or very little 

 dilated. The penultimate articulation of these tarsi, and of 

 the others, is never deeply bilobated. 



The three following sub-genera have a common negative 

 character, which is that of being deprived of wings. 



Anthia, 



Have a corneous ligula, oval, and advancing between the 

 palpi, even as far as their extremity. 



The labium is often large and denticulated or angular. 



Their external palpi are filiform, with the last articulation 

 almost cylindrical, or in a reversed and elongated cone. The 

 emargination of the chin presents no tooth. The abdomen 

 is oval, most frequently convex, and the elytra are almost 

 entire or but little truncated. 



These insects as well as those of the following sub-genusj 

 have the body black, spotted with white, a colour formed by 

 a sort of down, and inhabit the deserts or similar places, in 

 Africa ; though there have been found, in the southern parts 

 of Spain and Italy, many insects of the north of Africa, 

 there has never been discovered there, a single species of 

 anthia or graphiptera. 



The anthia, according to the observations of the late Les- 

 chenault de Latour, cast, by the anus, when they are dis- 



