

COLEOPTERA. 281 



timate of all, and in both sexes, is always emarginated or dilated. 

 The exterior palpi and the first joint of the antennae always long, 



Trichognatha, Lat. 



Ultimate joint of the exterior palpi in the form of a reversed cone, 

 and elongated; a hairy triangular projection on the exterior side of 

 the maxillae; very long palpi; labrum bicrenate, with three obtuse 

 teeth; summit of the ligula armed with three spines? the four poste- 

 rior tarsi not dilated, at least in the females. The type of the genus 

 (71 mar g inip ennis) was brought from Brazil by the celebrated bota- 

 nist M. de Saint-Hilaire. 



Galerita, Fab. 



The Galeritae differ from the preceding subgenera in their exte- 

 rior palpi, of which the last joint is triangular or securiform, and 

 in the non-dilatation of the exterior side of the maxillae. 



The two anterior tarsi of the males are widened; the emargina- 

 tions of the four first joints are acute, and their internal divisions 

 are larger and more prolonged than the external. The summit of 

 the ligula is tridentate, and its paraglossae are very distinct. The 

 emargination of the mentum is unidentate. 



Some species, such as the Galerita occidentalis, Dej.; G. afri- 

 cana, Id., by their oval head, and narrower and more elongated 

 thorax, form a particular division. Most of them belong to 

 America(l). 



Cordistes, Latr. Calophoena, Kliig. Odocantha, Fab. 



The exterior palpi filiform and terminated by an oval and pointed 

 joint. 



The four first joints of all the tarsi dilated and the first in the form of 

 a reversed and elongated cone; lobes of the two following ones equal, 

 straight, and pointed; the fourth in the form of a heart or reversed 

 triangle, and unemarginatej its superior face is excavated for the re- 

 ception of the next. The head is nearly oval(2). 



We will terminate this section with those in which the hooks of 



(1) Seethe Hist. Nat desColeop. d'Eur.; and Spec. Gener. des Coleop. Dej., ]. 

 But one species of Galerita, the G. umericana, Fab., Carabus americanus, Oliv. , 



has yet been described from the United States. The rest are from Cayenne, Cuba, 

 and one, the africana, Dej., from Senegal. Am. Ed. 



(2) See the Hist. Nat. des Col. d'Eur., fuscic. II; Spec des Coleop., Dej., I; 

 and chiefly the Entom. Brasil. Specim., of Kliig-. All the known species belong- 

 to South America. 



Vol. III. 2 L 



