382 CLASSIFICATION OF THE CARABID.E 



(Ann. Lye. 4, 391.) The anterior tarsi of the males are not dilated: the intermediate 

 tibia) of that sex are hent inwards, and strongly serrate internally. Besides these sexual 

 characters, there is nothing to distinguish this genus from Selenophorus, except the greater 

 breadth of the anterior tibia? : the ligula as in Selenophorus is narrow, the paraglossse 

 broad and rounded : the 2d, 5th and 7th stria* of the elytra are marked with distant punc- 

 tures : the two species are very closely related, and may be distinguished as follows : 



1. D. par all el us, elongato-ovalis, cyaneo-niger, thorace latitudine subbreviore, lateribus rotun- 

 datis, angulis omnibus rotundatis, posticis leviter explanatis, ely tris profunde striatis, triseriatiin punc- 

 tatis, antennis rufis, tibiis tarsisque rufo-piceis. Long. -29. 



Georgia, Pennsylvania, Missouri Territory. 



2. D. tcnebrosus, subclongatus, ovalis, subconvexus, niger, tborace latitudine breviore, lateri- 

 bus magis rotundatis, angulis omnibus rotundatis, posticis obsolete explanatis, elytris profunde striatis, 

 antennis runs, tibiis tarsisque posticis rufo-piceis. Long. '26. 



Missouri Territory, near the Rocky Mountains. 



The second division is named Eurytrichiui in my catalogue of Geodephagous Coleop- 

 tcra. It consists of genera in which four joints of the anterior and middle tarsi of the 

 male are strongly dilated, and furnished beneath with a dense brush of hairs, as in Chlce- 

 nius; the fourth joint is strongly emarginate, or bilobed. Except by this sexual character, 

 this division cannot be recognised, although the form of the ligula and paraglossa3 will be 

 sufficient to separate the genera from those of the next division. The terminal spur of 

 the anterior tibiae is subject to great variation in form in the genus Anisodactylus ; it is 

 double in the European genus Diachromus, but single in all the rest. Dichirus Man. was 

 described as having a double spur, but after a very close examination, I can find no suffi- 

 cient reason for separating it from Anisodactylus, the original observations on the form 

 of the spur being erroneous. 



Our genera may be thus arranged. 



Ligula apice dilatata, paraglossis angustis, longioribus; mentum cdentatum Anisodactylus / 

 Ligula apice non dilatata, truncata, vel subtruncata: 

 Paraglossia angustixs curvatie, ligulae sequales: 



Mentum medio cdentatum ... - Xestonotua Lee. 



Mentum medio dentatum .... Spongopus Lee. 



Paraglossia latse, rotundatse, ligula longiorcs: 



Mentum medio cdentatum - - . - Amphasia Xeunn. 



Mentum medio dentatum .... Eurytrichus Lee. 



With Anisodactylus, as above mentioned, I have found it necessary to unite Dichirus 

 Man. which has the spur of the anterior tibiae, not double, but only trifid, as in many of 

 our common species; (A, morula, nigrita, luctuosus, &c.) 



I have found it necessary to place in the same genus Harpalus femoratus Dej. I for- 

 merly considered it as belonging to Amphasia, but the ligula is as in the other species 



