94 [May, 



Var. ? Entirely testaceous, with a marginal fuscous spot at the middle of each 

 elytron. I have only a single specimen of this, which is possibly a distinct 

 species ; it is less elongated, and the elytra are broadly truncate at the tip. 



9. N. bifas ciat us, elongatus, fuscus, thorace globoso, cornu vix serrato, 

 crista subito elevata, elytris subtilissirae punctulatis, nigris, fasciis duabus 

 cinereis ornatis. Long. -13 '16. 



Moiiocerus hifasciatus Lee. Journ. Ac. Nat. Sc. New Ser. i. 89. 



Western States and Upper Mississippi. The feet are either fuscous or ferru- 

 ginous ; the thorax is sometimes rufous ; the elytra are rounded at the tip in 

 both sexes ; the anterior fascia is broad and situated at the anferior fourth of the 

 length of the elytra, the second is narrow and placed one-third from the apex. 



10. N. bicolor, elongatus, obscurus, pedibus thoraceque laete rufis, hoc 

 cornu serrato, crista lata sensim elevata, elytris opacis cinerascentibus, subti- 

 liter punctulatis. Long. -l.?. 



Ferte Anthic. 53. 



AntJdcus bicolor Say, Am. Ent. i. pi. 10. 



Monoceriis bicolor Lee. Journ. Ac. Nat. Sc. N. Ser. i. 90. 



Common in the Middle and Southern States. The thorax is subglobose ; the 

 horn wider than usual, strongly serrate ; the crest is wide, rises gradually, and 

 is margined on the sides and apex, which is rounded. 



Species unknown to me : 



11. N. Pil at i, Ferte Anthic. 297. Texas. 



12. N. plani CO r nis Ferte Anthic. 39, fig. 8. Very distinct by the absence 

 of the crest of the horn. 



13. N. t alp a Ferte Anthic. 50. 



14. N. elegantulus Ferte ibid. 52. These are both from California. They 

 appear to be allied to N. b if asc iatu s. 



A ToMODERus Ferte. 



This genus is distinguished by its submoniliform antennae, and clavate femora; 

 the fourth joint of the tarsi is bilobed as in Anthicus. 



1. T. interrupt^us, parce pubescens, thorace medio valde constricto, 

 lobo anteriore latiore, transverso, elytris confuse punctatis, punctis pone medium 

 subtilioribus. Long. -11. 



Ferte Anthic, 97. 



Middle and Southern States, varies from black to brown; usually dark brown, 

 with the posterior part of the elytra black. 



2. T. constrictus, parce pubescens, thorace medio valde constricto, lobo 

 anteriore latiore subtransverso, elytris antice seriatim grosse punctatis, pone 

 medium obsolete punctulatis. Long. '12. 



Ferte, Anthic. 101. 



Anthicus constrictus Say, Journ. Ac. Nat. Sc. 5, 244. 



Southern States; the obsolete punctures of the posterior part of the elytra is 

 the only character for separating this species from the preceding, in which the 

 punctures frequently show a tendency to form series. I am very doubtful 

 whether they should be considered distinct. 



4 FoRMicoMtJs Ferte. ) 

 \ Formicilla Lee. J 



This group is only separated from genuine Anthicus by the oval, convex elytra 

 without distinct humeri, and by its more strongly clavate femora. J have placed 

 it in brackets to signify that 1 do not adopt the name. 



1. A. s c i t u 1 u s , apterus, rufo-testaceus, nitidissimus, thorace elongate, 



