154 GEO. H. HORN, M. D. 



long, tiljise slender the terminal spurs moderate or short, rarely long {Tetragono- 

 derus, Nemotarsus), simple, rarely finely serrulate along their margins (Tetragono- 

 derus, etc.). Tarsi variable in form, the fourth joint narrow, emarginate, or deeply 

 hilobed, the claws usually pectinate or serrulate, sometimes however simple. 



The sexual characters are variable. The anterior tarsi are often very nearly 

 equal in the sexes, sometimes with three or four joints slightly dilated in the male, 

 rarely the middle tarsi are dilated (Pinacodera). The anal segment has usually 

 more setse in the female than in the male. 



The tribe as here intended is the equivalent of Lacordaire's Lebiides 

 and Pericalides omitting especially Agra and Mormo/j/ce. 



After having given the tribe a careful -study, having purposely left it 

 for the final work in the present paper, I have found myself with the 

 same result as that arrived at by Lacordaire and LeConte, namely, that 

 it is not possible to divide the tribe in any satisfiictory manner. I have 

 dissected the mouth parts of all our own genera which are figured, with 

 many foreign to our fauna and the only conclusion I can arrive at, is, 

 that the ligula and paraglossae have very little value in defining groups 

 of genera. I can cite the two figures of the ligula of Valllda (93, 94), 

 in these the paraglossae are not united by a membrane which crosses the 

 front of the ligula, nor do we find it so in Dromius. In both of the 

 groups which Chaudoir bases on these two genera as types the paraglossae 

 should be united by a membrane crossing the front of the ligula. 



The Lebiides of Baron Chaudoir are separated more especially by the 

 paraglossae pilose at tip and the intermediate tibiie of the male notched 

 within near the tip. The other characters given, occur, as every one will 

 see, in all parts of the Lebiide series. Other genera as in Dromius (86) 

 and Pinacodera (97) have the paraglossae ciliate at tip, while the male 

 of Coptodera a&rata has the middle tibiae incised as in Lehia. The 

 further division of the Lebiides into genera with and without epilobes 

 to the mentum is also misleading and I am quite prepared to state that 

 there is no Carabide without epilobes. 



By these remarks I do not desire to discredit the work done by 

 Baron Chaudoir* who is acknowledged to be the ablest Carabologist of 

 the present time. The tribes and groups he indicates are composed of 



* This and the preceding-pai'agrapjis may read strangely now that Chaudoir is 

 no more. They were written before his death and intended as full}' for his perusal 

 as for any one else. For many years Chaudoir has contributed valuable papers to 

 our knowledge of the Truncatipenne series, and as it has been found impossible to 

 present my own views without directly quoting him, I do not think that any 

 change of language, apparently less critical, would be of benefit in any respect. 

 I can only add that our relations, even with differences of opinion, have always 

 been of the most cordial nature, and were he living the remarks here presented 

 would be accepted in the spirit in which they are intended. 



