256 EEVISION OF THE GENUS XOTO^OMCS, 



congeners. In lettering the subdivisions of the table I have 

 used italics for general characters, Roman capitals for divisions 

 that may be regarded as groups of species, and Greek letters for 

 minor subdivisions ; by bearing this in mind an idea may be 

 formed of the gronjjs into which I consider the species might be 

 lotted. 



The following species are unknown to me in nature, or at least 

 I have been unable to identify any of them among the species I 

 have had before me : — N. violaceus, Casteln. (of which I have not 

 seen the description, so that it is quite unknown to me), iV. 

 phillipsi, Casteln. (see under i\". strzleckianus, and postea, p. 278), 

 JV. depressipennis, Chaud., and iV. striaticollis, Casteln. (see under 

 i\^. rugosicoUis, SI., and J\^. discorimosus^ SI., postea, pp. 305, 306), 

 N. ingratus, Chaud., N. subii'idescens, Chaud., N. darlingi, 

 Casteln., N. tvilcoxi, Casteln. N. simidans, Chaud., i^'^. resplendens, 

 Casteln., are species to which I have allotted separate headings 

 under which my ideas as to their resemblances and affinities may 

 be found; I cannot think that any of these species can be con- 

 specitic with any species for which I propose a new name in the 

 present paper. 



Table of Species known to me. 



a. Metasternum with episterna short. 

 h. Elytra fully and strongly striate. 



c. Intercoxal declivity of prosternum rounded, usually narrow in middle. 

 cl. Elytra with third interstice normally bearing more than two punc- 

 tures, the posterior puncture on apical declivity. 

 e. Elytra with basal border joining lateral border at humeral angle 

 without any interruption. 

 f. Elytra with eighth interstice not (or very lightly) convex, 

 decidedly wider than ninth on basal half. 

 (1. Pro thorax with sides sinuate before the base. 

 A. Prothorax with lateral basal spaces convex. 



(B. Prothorax with posterior marginal puncture ( N.frenchi. 



in lateral channel before basal angles I N.croesus. 



/3/3. Prothorax with posterior marginal puncture at basal 

 angle {^ with joints of anterior tarsi not dilatate or 



squamulose beneath) N. lyeroni. 



AX. Prothorax with lateral basal spaces depressed (not 

 convex) iV. accedens. 



