704 EEVISIONAL NOTES ON AUSTRALIAN CARABID.E, I., 



angles, elytra with reflexed border not interrupted, posterior 

 coxae contiguous. These features evidently prevent its being 

 placed in the tribe Pseudozsenini, and I hesitate to refer it to the 

 tribe Migadopini — thereby bringing a new tribe into the Austra- 

 lian fauna, an action which would be unwarranted on such doubt- 

 ful data. I therefore leave it as a genus of uncertain position. 



Tribe iv.— Pseudozaeniiii. 



Mystropo7nini, Horn, Trans. Am. Ent. Soc. ix. 1881, p. 116. 



The genus Pseudozcena from New Guinea and the Malayan 

 Archipelago must be referred to Horn's tribe Mystropomini, and 

 being the oldest genus of the tribe, should give the tribal name. 

 In his definition of the tribe Horn has said, '• thorax without 

 marginal setse"; this is erroneous; Jft/stropomus has the prothorax 

 with the lateral channel plurisetose, the setse extending from near 

 the anterior angle to the basal angle. In regard to the supra- 

 orbital setae of the head, Horn said that in Mystropomus there 

 are two, but this seems to be misleading, for there are several 

 setae rising from pores on each side of the head above the eyes. 

 I note that in Mystropomus the male has the anterior femora 

 armed beneath at about the basal third with a small dentiform 

 prominence. A somewhat similar feature ma)'- be noticed in the 

 male in the genera Lychnus^ ChJcenius (some species), RhcBhoIestes 

 and jEnigma. Mystropomus suhcostatus, Chaud., ejects an acrid 

 and explosive fluid like the bombardier beetles {Pheropsojyhiis) and 

 the Paussidie {Ceraptterus). 



BIPARTITI. 



Latreille, Fam. Nat. 1825. 



The Latreillian name Bipartiti may be revived with advantage 

 for that division of the Carabidse to which Dr. Horn, following 

 modern usage, attributed the tribal name of Scaritini, but which 

 seems to me to contain material for two tribes of a value equivalent 

 to that of most of the recognised tribes among the Carabid?e.* 



* Vide aupra, Table of Australian Tribes. 



