COLEOPTERA. 417 



EV^STHETUS, Grav. 



The antennae also inserted before the eyes, but hardly longer than 

 the head, and almost entirely moniliform ; the body but slightly 

 elongated, and the head as wide as the thorax *. 



STENUS, Lot. 



The antennae inserted near the internal margin of the eyes, and 

 terminated in a triarticulated club ; extremity of the mandibles 

 forked ; large eyes. 



S. 2-guttatus ; Staphylinus 2-guttatus, L. ; Panz. Faun, Insect. 

 Germ., XI, 18. About two lines in length; all black, with a 

 reddish dot on each elytron f. 



The third section DENTICRURA, Lai. differs from the second in 

 the maxillary palpi, which are much shorter than the head, and 

 always consist of four distinct joints ; the anterior tibiae, at least, are 

 dentated or spinous along their exterior side. The last joint of the 

 tarsi, which in most of them are bent under the tibiae, is as long as 

 all the preceding ones together, or longer; the first, or two first, are 

 usually so small or so concealed that the whole number does not 

 appear to exceed two or three. 



The fore-part of the head, and even the thorax, is armed with 

 horns in several males. The antennas are inserted before the eyes. 



Some, whose palpi have a fusiform termination, whose antennae 

 are mostly granose and gradually enlarge towards the extremity, 

 present but three distinct joints in the tarsi J. 



OXYTELUS, Grav. 



The others have filiform palpi, and at least four very distinct joints 

 in the tarsi. 



OSORIUS, Leach, Dej. 



The body cylindrical ; all the tibiaa widened and dentated ; the head 

 as long as it is wide ; thorax almost cordiform, narrowed and trun- 

 cated posteriorly ; the greater part of the antennae granose, insensibly 

 enlarging towards the extremity, and shorter than the head and 

 thorax ; mandibles much shorter than the head, crossing considerably, 

 and terminating in a simple point ; mentum large and scutiform, 



But a small number of species are known, which are not yet 

 described. From Guiana and Brazil. 



* Ecaithftus sealer, Grav. ; Germ., Faun. Insect. Europ. VII, 13 ; Gyll., Ib., p. 

 461 . A new species has been discovered by M. Blondel, Jun. in the vicinity of Ver- 

 sailles. 



f Add Staphylinus Juno, Payk. \-Paderusproboscideut, Oliv., Col. Ill, 44, I, 5 ; 

 Staph. claricornis, Panz., Faun. Insect. Germ. \\\II. 2. See Gravenhorst, 

 Coleop. Microp. ; Lat., Gener. Crust, et Insect., genus Stenus, and Gyll., Ibid., p. 

 463. 



J With the exception of the Tachini, the anterior tarsi are no longer remarkably 

 dilated. 



See Encyc. Method., article OXYTBLK ; the Monog. cit. of Gravenhprst, and 

 the Insect. Suec., Gyll., I, pars II, p. 444. 



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