470 ON CARABID.f: FROM WEST AUSTRALIA, 



Tribe NOMIINI. 



This tribe was founded by Dr. G. H. Horn on the single genus 

 Nomius (Trans. Am. Ent. Soc. ix. 1881, p. 129). It is evident 

 from his remarks that he felt unable to define the tribe fully 

 from want of sufficient data, and therefore restricted his diagnosis 

 to the genus Nomins. The three genera known to him as 

 apparently belonging to the Nomiini were Nomius, Melccniis and 

 Coscinia, and these seemed to him to represent three groups in 

 the tribe. I do not know any of these genera, but would place 

 here all the genera presenting a combination of the following 

 characters : — 



Mandibles with a setigerous puncture in the scrobe; palpi with 

 last joint not subulate; elytra with margin interrupted posteriorly 

 and with an internal plica. 



As thus constituted the Nomiini will contain ten Australian 

 genera, which may be divided into four groups as shown in the 

 following table : — 



A. Elytra not bordered on base Group M K o N i d e s. 



b. Antennte filiform, front without lateral 

 carinje, prothorax with two marginal 

 setse, elytra deeply and simply striate 



on disc Genus Meonis. 



bh. Antennie moniliform, front with a 

 ridge on each side, prothorax with 

 lateral channel plurisetose, elytra 



punctate-striate on disc Genus Laccocenus. 



AA. Elytra bordered on base. 



C. Antenna3 moniliform Group M E L i s o d E r i d e s. 



d. Elytra with seventh stria well 



marked Genus Celanida. 



del. Elytra with seventh stria obso- 

 lete. 

 e. A striole at base of first inter- 

 stice Genus Melisodera 



ee. First interstice without a striole 



at base Genus Teraphis. 



CO. Antennae filiform. 



F. Mesosternum not narrow 

 between coxae (apex emar- 

 ginate) Group T R o p o pt e Ri D E s. 



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