Saarp—On New Zealand Coleoptera. 363 
Acallistus simplex, n. sp.—Niger, supra subyiridescens, subopacus, antennis 
tarsisque piceo-rufis; prothorace posterius angustato, transversim subtiliter stri- 
goso; elytris striatis, striis punctatis. Long. 103 m.m. 
Head dull black, without sculpture. Thorax just as long as broad, truncate in 
front, curved at the sides, considerably more narrowed behind than in front; hind 
angles extremely obtuse ; the surface dull, without any punctuation ; channelled 
along the middle, the channel equal abbreviate in front and behind, with a few 
fine, but distinct, transverse wrinkles. Elytra much curved at the sides, with 
distinct, but quite shallow, striae, which are somewhat coarsely, but obsoletely, 
punctate, and are obsolete at the sides and apex. The legs are black, the tarsi 
pitchy red. 
New Zealand. Castlenau, a single example. This insect has, perhaps, more the facies of Adelium 
aucklandicum, Broun—one of the Heteromera—than of any New Zealand Carabide. 
Crenocnatuus (Fairm.) 
This name was proposed by Fairmaire (Ann. Soc. Ent. France, 1843) for a 
New Zealand Carabid, but was afterwards treated as a synonym of Anchomenus 
or Colpodes, because the character relied on by Fairmaire for its differentiation 
proved to be unsatisfactory. On examining for the purposes of this paper the New 
Zealand Anchomeni and Colpodes in my collection, I have discovered that a 
character hitherto neglected divides them very satisfactorily into two groups. In 
certain species there is only one tactile seta on each side of the thorax, placed in 
front of the middle, while in others there is a second seta placed at, or on, the 
posterior angle. This latter is the normal condition in the group of Carabide 
to which these insects belong ; and in fact I have not* been able to find amongst the 
exotic Colpodes at my disposal any species similar to the New Zealand species 
above alluded to, and as it was for one of these that Fairmaire proposed the name 
Ctenognathus, I propose to restore it to these forms. Ctenognathus then will 
include such of the New Zealand Carabide hitherto placed in Colpodes or Ancho- 
menus as possess only a single lateral seta on each side of the thorax, placed in 
front of the middle. In addition to the two species I here describe, the genus will 
include Colpodes bidens, Chaud. and pretty certainly also some of the other species 
of Colpodes and Anchomenus described by Chaudoir and Broun, but not known 
to me as yet. 
Ctenognathus latipennis (new name).—Anchomenus elevatus, Bates, Ann. Nat. 
Hist. xm, p. 10 (reprint) nee White. Robustus, latior, niger, antennis palpisque 
rufis, pedibus piceis; prothorace lato angulis posterioribus perobtusis; elytris pro- 
funde striatis, striis haud punctatis, interstitio secundo puncto unico versus apicem 
sito. Long. 134 m.m. 
The salient characters of this species have been mentioned by Mr. Bates as 
* See notes added during press, No. 2. 
