(Page 428) 



or gravelly ground, as well as in and about woods, common in this 



country. 



2. 0. myrmecophilus Kiesw. 



(Kiesw. Stett. Ent. Ztg. IV, 1843, 308; Kraatz Ins. D. II, S58j 

 Thorns. Skand. Col. II, 186; ^5uls. et Rey Brevip. 1877, 12; rJanglb. 

 Kaf. !v'.. II, 471). 



From melanocephalus , to which it in form, size, and punctation 

 etc. is very closely allied, it differs mainly in the follov;ing char- 

 acters : 



It is wingless; pronotum as well as the neck pitch-brown or yel- 

 lowish-brown, the color of the body as a whole darker than in melano- 

 c ephalus; The head is nearly as broad as pronotum; antennae rather 

 robust, their next-last five Joints distinctly transverse; on prono- 

 tum the foremost puncture in the dorsal rows are placed some distance 

 from the anterior margin, about midways between this and the following 

 puncture, and in the abdominal fifth free dorsal joint's posterior 

 margin, that, in the Staphylinids usual fine, light membranous border, 

 is wanting, presumably due to the wanting of flight-wings in the spe- 

 cies. L. 5-6 mm. 



Distributed in Europe, and in this country not rare, especially 

 in woodland regions, often in company with ants, ( Lasius fulij^inosus 

 et. al.), in hollow trees, under moss and leaves. 



75. ienus Baptollnus Kr. 



(Kraatz Ins. D. II, 659; I.luls. et Pey Brevip. 1877, 21; Janglb. Kaf. 

 M. II, 472. - iyrohypnus Thorns. Skand. Gol. II, 186). 



From othius, this genus is separated mainly by, that the labrum 



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