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PLATYNUS.— ANCHOMENUS. 



93 



Together with the following it presents all the characters of Leconte's genus Bhadine 

 in a typical degree — the acuminate and dehiscent apices of the elytra, lengthened third 

 joint of the antennse, and grooved fore (as well as hinder) tarsi. In any revision of the 

 Anchomeninse group of the whole world this genus would doubtless be reinstated. 



3. Platynus euprepes 



Castaneo-nifus ; P. larvali (Lee.) paullo minor et gracilior, capite angustiore postice gradatim attenuate) ; 

 thorace anguste ovato, angulis anticis rotundatis haud prominentibus, posticis obtusis fere rotundatis, 

 margine basali medio sinuato, laterali modice sequaliter explanato, minus quam in P. larvali reflexo ; 



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tibus, margine laterali explanato acuto, dorso fortiter striatis, interstitiis paullo convexis, tertio 4-punctato J 



jjjtci/i^iJLLV/ MCtOC^Xi xuv;ui.v uxixuwvvj awwxu/x* .^-.w^^w^ *~ ^ ~ ~~- j~ '--7 JL 



elytris elongato-ovatis, apice oblique vix sinuatim truncatis, angulis suturalibus subacuminatis debiscen- 





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tarsis omnibus supra sulcatis ; antennis articulo tertio quam sequens eonspicue longiore. 

 Long. 6 lin. tf $ • 



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Hob. Mexico, Ciudad in Durango (Forrer). 



? 



Distinguished from P. leptodes by its larger size and the form of the thorax 



which is elongate-oval, with explanated side margins and posterior angles blunt instead 

 of acute, the basal margin being emarginated only in the middle instead of being 

 incurved from angle to angle. The fore part of the thorax is strongly narrowed to the 

 obtuse anterior angles ; the front edge is consequently very much less broad than in 

 P. larvalis. 



ANCHOMENUS. . 



Anchomenus, Bonelli, Obs. Ent. i. 1809, tabl. synopt. 



Agonum, id. ibid. 



Anchomenus (partim), Schaum, Ins. Deutsch. Col. i. 1, p. 404. 

 Platynus (paxtim), Leconte, Bull. Brooklyn Ent. Soc. ii. 1879, p. 45. 

 Sericoda, Kirby, Fauna Boreali- Americana, iv. p. 14. 



or two other groups, which seem to be 

 described soecies in this well-known 



After the separation of Platynus and one 

 sufficiently distinct, there still remain about 300 

 and widely-distributed genus. The great majority are- confined to temperate latitudes, 

 in the southern as well as the northern hemisphere. Many species occur in South 



Brazil and in Northern India and in Mexico; but extremely few are found in the 

 equatorial zone of either hemisphere. 



1. Anchomenus extensicollis. 



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Feronia extensicollis, Say, Trans. Am. Phil. Soc. ii. 1823, p. 54 . 



Anchomenus extensicollis, id. ibid. iv. 1834, p. 421; Dejean, Sp. Gen. Col. iii. p. 113 2 . 



Platynus extensicollis, Leconte, Complete Writings Th. Say, ii. p. 478. 





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Var. Anchomenus elongatulus, Dej. Sp. Gen. Col. iii. p. 112 . 



Hab. Noeth America x 2 3 . — Mexico, Orizaba, Puebla (Salle), Jalapa (Edge) 



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All the Mexican examples I have seen have dark legs and antennse, and dull bronzed 

 elytra, thus agreeing with Dejean's description of his A. elongatulus. 









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