Staphi/linidcB of the Amazon Valley. 147 



Ohs. — Philontlius cyanescens, Gucrin, is an ally of this 

 species, but is very much smaller and has the antennie 

 much more slender. 



Glenus. 



This genus appears to me one of the most distinct of the 

 subfamily Staj)hylinini; the elongate terminal lobe of the 

 maxillaj, and the mandibles, which though elongate are but 

 little curved, taken in conjunction with the subapproxi- 

 mate antennjB, and the peculiar form of the front of the 

 head, give it a peculiar isolation. It consists at present of 

 five species, four of which were known by Erichson, and 

 assigned by him to his genus Stapliylinus, and it is to 

 Kraatz that we owe the establishment of the genus. 



I here describe four new species, two of which are very 

 closely allied to others already known, while the other 

 two, G. amazonicus and G. veslitus, form a distinct sec- 

 tion by reason of the unrounded sides of the thorax. 



1. Glenus Kraatzi, n. sp. Rufo-testaceus, thorace 

 cupreo, nitido; elytris aureo-tomentosis, fascia media ad 

 suturam abbreviat^i fusca ; abdomine nigro, segmentis sin- 

 gulis apice rufis. Long. corp. 12 lin. 



This species is so closely allied to G. biplagiatus, that 

 it is only necessary to point out its distinctive characters. 

 The punctuation of the head behind the eyes is less close. 

 The thorax has the hinder angles less completely rounded 

 off, and is a little more sinuate at the sides ; the impunc- 

 tate medial line is broader, and extends quite to the front 

 of the thorax ; its punctuation is less dense, and the small 

 punctures mixed with the large ones in biplagiatus are in 

 Kraatzi nearly absent. The 3rd segment of the hind body 

 is Avithout the transverse curved line which is apparent in 

 biplayiatus, and the colouring of the 4th and 5th segments 

 is different; in biplagiatus the black mai'ks thereon consist 

 of a central spot and another on each side, these being 

 united at the base, but distinctly recognizable ; in Kraatzi 

 these spots are replaced by a broad, transverse band, but 

 slightly sinuate behind. 



Ega ; one specimen, $ , 



Obs. — I have much pleasure in dedicating this fine 

 species to the learned author of the second volume of the 

 " Insecten Deutschlands," and the founder of the genus to 

 which the species belongs. 



L 2 



