Coleopterological Notices, VI. 075 



Prothorax rounded at the sides anteriorly, thence straij^ht and ()bli<nie to thp 

 basal margin. 

 Head simply and very remotely punctate; elytra! pubescence very short and 

 rather closely decumbent. 

 Prothorax always pale, rufous. 



Elytra with a basal, median, and apical l)laek fascia, varying to almost 

 entirely black, the l)asjil fascia obsolete in the paler forms. 



1. lactus 

 Elytra pale, each with a median discal si)<)t of black; ]iunctnation very 



much closer r2. sil pplex 



Prothorax black or piceous-black. 



Abdomen minutely and rather densely punctate throughout; elytral 



punctures sparse ;>. monitor 



Abdomen less minutely and very remotely punctate toward liase; 

 elytra less sparsely punctured, the prothorax more elongate. 



4. coiifiiiis 

 Head with longitudinal and vermiculate scratches intermingled with the 

 sparse punctures; elytra with longer, coarser, more erect and con- 

 spicuous pubescence; body black, the elytra sometimes paler. 

 Black throughout, the head and pronotum not impressed. 



5. nigritiilus 



Black, the elytra piceous-brown and relatively longer and larger; occiput 



impressed in the middle at base; pronotum impressed along the median 



line toward base 6. arcanus 



Prothorax angulate at the sides anteriorly, obli(jue and broadly sinuate thence 

 to the base: smaller, pxibescent species. 

 Head finely and very remotely punctate; elytra each with three or four 

 series of long stiff erect seta?. 

 Elytra parallel and fully three-fourths longer than wide. 



7. <le§ei-toriint 

 Elytra much shorter, .scarcely more than one-half longer than wide; eyes 

 a little larger; pronotal punctures decidedly less dense. 



8. proiuineiis 

 Head more coarsely and su1)rugosely, though not densely, punctate, and 

 more plentifully pubescent. 

 Body slender, tlavate throughout, the elytral seta; distinct but very 



sparse; humeri less brocadly exposed at base 9. foriiiicetoruiit 



Body st<rater, the elytra more broadly truncate at base, with the seta; not 

 evident on the disk, the sutui-e and apex feebly clouded with a black- 

 ish tint 10. suspectus 



The species of ouch of the tliiee groups are rather closely allied 

 among themselves, but, as far as it is possible to judge, are dis- 

 tinct as above defined. 



Annals N. Y. Acad. Sci., VIII, Oct., 1895.— 46 



