194 DescrijJtive Catalogue [1896. 



of the tribe into five groups, i.e., CallidcB, Cymiiididce, DromiidcR, 

 LebiidcE, and PericalidcB. 



De Chaudoir, when creating the group Callidides — Monogr. des 

 Calhdides, in the * Annales de la Societe Entomologique de Belgique,' 

 vol. XV., 1872 — thought that he had found a very distinctive character 

 in the shape of the ligula, which is edged by a transverse membrane 

 uniting the paraglossae. That character, however, is not constant, 

 and, although very distinct in the South African species, is entirely 

 absent in Callida lyimctata, Lecom., a North American species."^ 

 Dr. Horn says also that in Dromiits this membrane is absent, and 

 I can corroborate his statement so far as the South African species 

 are concerned. 



De Chaudoir says, loc. cit., speaking of the Dromiidce, in rela- 

 tion to the Calliduhe, that the fourth joint of the tarsi is never 

 bilobate, nor the last joint of labial palpi securiform ; but he has, 

 unfortunately, not given any definition of the group Cij7nindidcB, 

 which is intermediate between the Gallididce and the Dromiidce, and 

 this to such an extent that it is almost impossible to assign to some 

 of the genera a place in either the one group or the other. 



The shape of the prothorax may, however, lead to a grouping of 

 the South African genera of Lehiides in the following manner : — 



Prothorax narrow, cordiform, deeply sinuate laterally behind, 

 base truncate, angles acute ; elytra with two punctures on the 

 third interval C allididcp. . 



Prothorax seldom subcordiform, oftener elongate, not sinuated 

 laterally behind, base truncate; posterior angles not projecting — ^ ^ . _ ^ 

 exception Cymindoidea, LyonicJms, Ai^ristus - 2)ro7;iiJd(^ 



Prothorax broad, short, sinuate laterally behind ; median part 

 of the base mostly produced beyond the posterior angles, which 

 are sharp and projecting Lehiidcc. 



Group CALLIDID^. 



Synopsis of Genera. 



Mentum with a median tooth. 



Fourth joint of tarsi bilobate, twelve teeth on each claw ; elytra 



narrow Callida. 



Fourth joint of tarsi deeply notched ; elytra narrow Lipostratia. 



Fourth joint of tarsi notched ; elytra moderately broad . . . . Sdoiisia. 



Fourth joint of tarsi bilobate ; six teeth in each claw . . . . Wahlbcrgia. 



Fourth joint emarginate ; three teeth in each claw Polymdacus. 



Mentum without a median tooth Mctallica. 



* Dr. Horn gives a very correct illustration of the ligula and paraglossce of this 

 species in his ' Genera of Carabidae,' &c., pi. viii., fig. 94. 



J 



