278 Mr. F. Bates's descriptions of 



NYCTEROPIN^. 

 DoLiCHODERUS (King), Castelnau. 



1. Body entirely black; eyes not laterally projecting beyond their orbit. 

 A. Prothorax with a transverse impressed line near the base; basal 

 margin not thickened .. .. 1. ac?imt«a^«5, Klug. 



A.A. Prothorax thickly margined at the base. 



B. Elytra distinctly produced (mucronate) and divaricate at 

 apex. 



C. Elytral mucro elongate, narrow, not impressed above; 



antennas of sexes similar. 



a. Species smaller (7^^ lines), uniformly shining black; 



base of elytra keeled nearly up to the scutellum. 



2. mucronatus, n. sp. 

 a.a. Species larger (8| lines), obscure black; base of 



elytra keeled only at the shoulders. 



3. puncHceps, n. sp. 

 C.C. Elytral mucro short, broad, impressed above; antenna 



of sexes dissimilar. 



b. Head and prothorax dull black; elytra gently con- 



vex, lustrous black . . 4. politipennis, n. sp. 

 b.b. Uniformly black, a little nitid ; elytra strongly 

 convex, almost gibbous 5. heterocerus, n. sp. 

 B.B. Elytra not produced, nor divaricate, at apex. 



D. Propectus not transversely grooved. 



E. Prothorax finely and more or less uniformly punc- 

 tured. 

 F. Prosternum distinctly impressed down the 

 middle between the coxae; anterior femora 

 with a short tomentose line down the inner 

 face in the $ . 



c. Prothorax not tumid. 



6. hicifvgus, n. sp. 

 C.C Prothorax tumid var. ? tumidicolUs, 

 F.F. Prosternum convex between the coxae ; an- 

 terior femora without tomentose line in 

 the $. 



d. Prothorax with minute shining specks, or 



granules, scattered between the punctua- 

 tion ; lateral margins obsolete at the 

 middle ; episteraum of mesothorax very 

 feebly punctured ; punctured lines on 

 elytra very faint 7. longicornis, Fairm. 

 d.d. Prothorax without minute shining specks 

 between the punctuation; lateral mar- 

 gins entire; e]3isternum of mesothorax 

 coarsely punctured; punctured lines on 

 elytra very distinct. 



8. approximatusy n.sp. 

 E.E. Prothorax with a cluster of variolate punctures 

 nearer the apex ; sides subangulate near the 

 base . . . . . . 9. distinctus, n. sp. 



D.D. Propectus with several broad deep transverse grooves 

 in front of the prosternum; prothorax massive, pa- 

 rallel-sided, distinctly broader at apex than at base. 

 10. pectoralis, n. sp. 



