COLEOPTERA. 329 



Oxyporus, Fab. 



Where the maxillary palpi are filiform, and those attached to the 

 labium are terminated by a very large and lunate joint. The an- 

 tennae are large, perfoliate and compressed; the anterior tarsi are 

 not dilated; the last joint and then the second are the longest. They 

 inhabit the Boleti and Agarici. 



O. rufus; Staphylinus rafus, L.; Panz. Faun. Insect. Germ., 

 XVI, 19. About three lines in length; fulvous; head, pectus, 

 extremity and interior margin of the elytra, as well as the anus, 

 black(l). 



Astrap^eus, Grav. 



The four palpi terminated by a larger and nearly triangular joint; 

 anterior tarsi greatly dilated, the first and last joints the longest(2). 

 In the 



Staphylinus, Fab* 



Or the true Staphylihi, all the palpi are filiform, and the antennae 

 are inserted between the eyes, above the labrum and mandibles. 



Some, particularly the males, have the anterior tarsi greatly di- 

 lated, and the antennae separated at base; the length of the first joint 

 of the latter is equal, at most, to that of a fourth of the whole num- 

 ber. The head is but slightly elongated. In some systems, those 

 species alone which present the above characters, constitute the 

 genus Staphylinus. The S. dilatatus, Fab., Germ., Faun. Insect. 

 Europ., VI, 14, has even been separated from it, to compose another, 

 on account of its antennae, which form an elongated serrated club. 

 According to the observations of M. Chevrolat, a zealous entomolo- 

 gist, this Insect feeds on caterpillars which it searches for on trees. 

 S. hirtus, L.; Panz., Faun. Insect. Germ., IV, 19. Ten lines 

 in length; black; very hairy; superior surface of the head, tho- 

 rax, and last abdominal annuli covered with thick hairs of a 

 glossy golden-yellow; elytra cinereous-grey, with a black base; 

 under part of the body bluish-black. North of Europe, France 

 and Germany. 



S. olens, Fab., Panz. Lb., XXVII, 1. An inch long; dead 



(1) Add 0. maxillosus, Fab.; Panz. lb. 20. The remaining- Oxypori of Fabri- 

 cius belong to subgenera of our fourth section. See Oliv., Encyc. Method., genus 

 Oxypore, and the Coleoptera Microptera, Gravenhorst. 



(2) Staphylinus ulmi, Oliv.; Ross., Faun. Ktrusc, I, v, 6; Panz. lb., 

 LXXXVIII, 4; Latr., Gener. Crust, et Insect., I, 284. 



Vol. III. 2 R 



