384 CLASSIFICATION OF THE CARABIDA; 



agrees. I am inclined to believe that it may be Harp, maculicornis Chuud. (Bull. Mosc, 

 1843:) it is nearly of the size of H. hi color, and may be distinguished as follows: 



E. maculicor nis, oblongus, niger nitidus, thorace latitudine sesqui breviore, antrorsum sub- 

 angustato, latcribus modice rotundatis, postice late subdepressis, angulis posticis obtusis, basi utrin- 

 que leviter imprcsso, elytris striatis, interstitiis vix convexis, 3'° postice unipunctato, palpis antennis- 

 que rufis, bis articulis 2-6 plus minusve nigricantibus. Long. *58. 



It is quite possible that future investigation may show the necessity of uniting Eurytri- 

 chus with Anisotarsus Chaud. (Bull. Mosc. 1837,) but as we already have two genera, 

 Spongopus and Eurytrichus, differing from Anisodactylus by having a mentum-tooth, it 

 will be necessary to know the form of the ligula of the typical species, A. brevicollis, 

 before we can unite either of the genera with Anisotarsus. 



In the third division of the Harpali the dilated joints of the tarsi of the male are not 

 brush-like, but are furnished beneath with two series of feathery papillae; in some of the 

 species the first joint of the anterior tarsi of the female is large and dilated : it is doubtful 

 if so much stress should be laid upon this character as has been done in the case of the 

 Texan genus Gynandrotarsus Fcrte, the male of which, according to the author, is a 

 genuine Harpalus. 



Some of the species of Stcnolophus have the male tarsi scarcely dilated, thereby ap- 

 proaching the genera of the first division of the group, but they are easily distinguished 

 by their more slender legs, and narrower anterior tibiae. 



The form of the ligula appears to be of fundamental importance in separating our 

 closely allied genera. 



A. Ligula angusta, fere linearis, paraglossis planis paulo longioribus. 



Mentum edentatum, tarsi antici articulo l mo longiore - Gynandropus Dej. 



Mentum edentatum, tarsi antici articulis 1-4 tequalibus - Selenopborus Dej. 



B. Ligula apice truncata, libera, paraglossis rcqualis. 



Ligula apice dilatata, paraglossis planis, mentum edentatum Fangus. 



Ligula vix dilatata, paraglossis inflatis, mentum plus minusve dentatum Harpalus Latr. 



C. Ligula apice truncata, libera, paraglossis brevior. 



Mentum valde dentatum, labrum truncatum ... Eradycellus Mr. 



Mentum non dentatum: 



Antennne filiformes; elytra apice rotundata - - Stcnolopbus Dej. 



Antennre moniliatre, extus incrassatse ... Trecbicus Zim. 



Antenna} filiformes ; elytra apice truncata - - Euca^rus Lee. 



Gyandrotarsns docs not appear in the tables, as I have never seen the insect, and the 

 description by Ferte (Ann. Ent. Soc. Fr. x. 201,) ignores the ligula altogether: the mentum 

 is said to be longer than usual, concave, squarely cmarginate, and without a tooth. In 

 his figure the ligula is represented as dilated with narrow paraglossa\ and the spur of the 

 anterior tibiae as lobed. As far as can be ascertained by comparing the descriptions, G. 

 harpaloides is identical with I larpalus s i m i 1 i s Say, (Trans. Am. Phil. Soc. 2, 29.) 

 Say's species was found abundantly in North Carolina; Ferte's came from Texas. 



