4 



following iTuited, otli joint :is long tis the 3r(l: hind long slender, 

 1st joint longer than the other 3 united, 4th as long as the 3rd; 

 claws entire, with a very small bisetose onychinm. Prothorax nearly 

 semicircular, not margined at the side, coxal cavities with a distinct 

 fissure ; prosternum short, ventral segments equal in length. 



This genus belongs to the gi'oup .Scrropalpi, in which it is easily 

 distinguished by the compressd antennae, (resembling those of 

 Galopteron), contiguous middle coxae, (otherwise seen only in Xyhla), 

 and peculiar form of maxillary ]ialpi. It has an extraordinary 

 Lampyriform appearance, i»robably not explicable on mimetic 

 jirinciples. 



A. praeSGS, n. s}i. Elongate velvety black, finely pubescent ; pro- 

 thorax bright fulvous with a broad black dorsal stripe and another 

 each side, partly on the under, partly on the upper surface, but not 

 attaining the front margin. Length 12.G mms. 



Prothorax nearly semicircular, colored as above mentioned, feebly 

 truncate in front, broadly bisiuuate behind, with the basal angles 

 acute ; disc with a transverse impression each side about the middle, 

 and a large shallow triangular basal one each side, extending nearly 

 to the hind angle. Elytra each with four elevated lines. One spe- 

 cimen collected by Mr. 0. Reinecke near Buffalo, has been kindly 

 given to me by that gentleman ; another has since been found by 

 Mr. F. Zesch, in the same hx-ality. 



RHINOSIMUS, Latr. 



E, viridiaeneus. lihyticJdfeH rind. Randall, Bost. Journ. Nat. 

 Hist. ii. •^•;! : Sprague, Proc. Bost. Nat. Hist. »Soc. 1875, 382. 



Specimens found by Mr. Reinecke near Buffalo, which I refer to 

 this species, differ from i?. nilem^, Lee. by narrower and more convex 

 elytra, with the punctures arranged in more regular rows, wltli 

 fewer punctures on the interspaces : the elytra are Cjuite as deeply 

 impressed near the base, and the color is more In-illiantly metallic. 

 Length 3.5 mms. 



I do not regard these differences as specific, and am tlierefore 

 disposed to place R. nitens, Lee. New Spec. Col. 108 as a synonym. 



The three species of this genus in our fauna are easily distin- 

 guished by the form of the beak ; they are all of the same size : 



Beak broad, flat, parallel, not longer than wide; [Alaska]. 



1. aeneirostris, Mann. 

 Beak one half longer than wide, slightly broader at ti}): [Cali- 

 fornia] 2. pallipes, Boh. 



