370 INSECTA. 



We will commence with those in which the head is not abruptly 

 narrowed at its posterior extremity, and is not attached to the tho- 

 rax by a sort of suddenly formed neck, or by a species of patella. 

 The thorax is always in the form of a truncated heart. The exterior 

 palpi are never terminated by a much larger and securiform joint. 

 The two anterior tarsi of the males are not dilated, or if so, but very 

 slightly ; the penultimate joint of these and the other tarsi is never 

 deeply bilobate. 



The three following subgenera have a common negative character : 

 that of being destitute of wings. 



ANTHIA, Web. Fab. 



An oval, horny ligula, advancing between the palpi nearly to their 

 extremity. 



The labrum frequently large and dentated or angular. 



The exterior palpi filiform; the last joint almost cylindrical or 

 forming a reversed and elongated cone. No tooth in the emargina- 

 tion of the mentum. The abdomen oval, and most frequently con- 

 vex ; elytra almost entire, or but slightly truncated. 



These Insects, as well as those of the ensuing subgenus, have a 

 black body spotted with white, a colour formed by down ; they inha- 

 bit the deserts and similar localities of Africa * and some parts of 

 Asia. According to the late M, Leschenault de Latour, the Anthiae, 

 when irritated; discharge a caustic fluid from the anus. The species 

 generally are large, and in the males of some the thorax is more or 

 less dilated posteriorly and terminates by two lobes f . 



GRAPHIPTERUS, Lat. ANTHIA, Fab. 



The Graphipteri were formerly confounded with the Anthiae, but 

 differ from them in their ligula, which, the middle part excepted, is 

 entirely membranous; and in their compressed antennae, whose third 

 joint is much longer than the others. Besides this, their abdomen is 

 always flattened and orbicular, and one of the two spines terminating 

 the posterior tibiae is always laminiform and much longer than the 

 other. 



The species of this subgenus are exclusively proper to Africa, 

 and smaller than the preceding J. 



APTINUS, Bon. BRACHINUS, Web. Fab. 



The last joint of the exterior palpi somewhat thicker, that of the 

 labials particularly ; a tooth in the middle of the emargination of the 



* Although several Insects of the north of Africa have been discovered in the 

 south of Spain and Italy, not a solitary species of Anthia or Graphipterus has ever 

 been found there. 



f See Hist. Nat. des Coleop. d'Eur., fascic. II ; the Species des Coleop., Dej., I ; 

 the excellent Synonymia Insectorum of Schrenberr ; and the zoological portion of 

 the Voy. de Caillaud, where I have described and figured the Insects collected by 

 him in Africa. 



J See Hist. Nat. des Coleop. d'Eur., fascic. II, and the Species des Coleop., I, 

 Dej. The Anthia exclamationis, Fab., is a Graphipterus, figured Diet. d'Hist. Nat. 

 X, E, 2, 7, under the name of trilinee. 



