AMERICAN COLEOPTERA. 



137 



deeply emarginate and toothed, varying to a simple bisinuation ; ligula at least 

 moderate in size, often large, more or less free at tip and bisetose (quadrisetose in 

 Myas), the paraglossse slender and usually longer than it, sometimes much longer 

 {Stomis, Loxandrus), the palpi variable in form the second joint sometimes longer 

 than the terminal. Thorax with at least one setigerous puncture at the side and 

 one at the hind angle. Body not pedunculate, (subpedunculate in some Evarthrus), 

 scutellum distinct. Elytra narrowly inflexed, margin strongly interrupted pos- 

 teriorly and with a well marked internal plica, disc usually with dorsal punctures. 

 Prosternum not prolonged at tip, margined or not. Mesosternum oblique or vertical 

 in front, rather widely separating the coxse, the epimera narrow and often wider 

 internally than externally. Metasternum and side pieces variable in length, the 

 epimera always distinct, posterior coxa; contiguous. Middle and posterior tibise 

 variably spinulose externally, the anterior slightly so near the tip, the latter 

 broader at tip deeply emarginate within, the inner spur situated at the summit 

 of the ehiargination." 



The anterior tarsi of the male have three joints rather broadly dilated and 

 squamulose beneath. 



As here intended the tribe contains several groups which Lacordaire 

 places in a higher rank. Schaum (Berl. Zeitsehr. 18G0, p. 17l>)> extends 

 the limits of the tribe in such a manner that it would be impossible to 

 define it, as he includes the Platynini, Patrobiiii and the genus Aritarctia. 

 The former I have excluded from the structure of the elytra, the anterior 

 tibia? and the male tarsi, the Patrobini by the characters especially noted 

 in the table as well as the pubescence of the antenna? and mode of 

 dilatation of the male tarsi, while Antarctia belongs also near Platynus. 

 Schaum has already scattered Lacordaire's Fseudo-Feronides, and of 

 Section viii of the latter author (Genera i, p. 306), we have but two 

 tribes remaining Trigouotomidex and Feronidea, these with all that 

 remains of the dismembered Stomides constitute the tribe of the present 

 essay which may be divided into three groups.* 

 Mentum feebly emarginate, sometimes simply bisinuate. the maxilLip hooked 



at tip TiufiONOToiM:. 



Mentum emarginate and toothed. 



Maxillffi hooked at tip Pterostichi. 



Maxilla; not hooked at tip Stomks. 



Chaudoir has already indicated (Bull. Mosc. 1872), some changes in 

 the composition of the first group, the second is the only one represented 

 in our fauna and the third contains as far as I know but two genera, 

 Stomis and Age/sea. From the Pterostichi (Feronides Lac), in addition 

 to the eliminations already made I would exclude Zahrus which is by 

 far more closely to the Harpalinae than to the present tribe although 

 through it and Amara the relationship is approximated. 



« From the characters given of the tribe Drimostomides by Chaudoir, (Ann. 

 Belg. xv), it seems probable that it might form a fourth group of the present tribe. 



TRANS. AM. ENT. SOC. IX. (.30) SK I'TEMBKn. 1881. 



