64 CATALOGUE OF THE INSECTS OF 



In Fungi, and decaying substances, not uncommon. Gibside, 

 Axwell, Ravensworth, South Shields, &c. 



153. Megarthrus, Kirhy. 



1. M. DEPRESSUs, Payh. 



Erichson, Gen. et Spec. Staph., 905. — Heer, Fn. Col. Helv., 

 i., 171. — Omalium depressum, Gyll. Ins. Suec, ii., 210. — 

 Megarthrus pusillus. Steph. Illust, Mand., v., 333. — 

 Omalium macropterum, Graij. Mon.,215, mx. Megarthrus 

 id, Steph. I.e. .? 

 In Fungi, cow-dung, &c. Budle Crag, Prestwick. Car, Long 

 Benton, Gibside, Ravensworth, South Shields. June — October. 



2. M. siNUATOCOLLis, De Jean. 



Erichson, Gen. et Spec. Staph., 905. — Phloeobium sinuato- 

 colle, Boisd. et Lacord. Faun. Ent. Paris, i., 493. — 

 Megarthrus depressus, Steph. Illust. Mand., v., 332? 

 In Fungi. Gibside and elsewhere. July. 

 In this species there is a blunt tooth on the sides of the thorax, 

 behind the middle. 



3. M DENTICOLLIS, Bcch 



Erichso7i, Gen. etSpec. Staph., 906. — Megarthrus marginatus, 

 Steph. Illust., Mand., v., 333, (foem.) — Megarthrus 

 emarginatus,^iV6y,/6. I.e., 332? — Phloeobium marginicolle, 

 De Jean, Boisd. et Lacord. Faun. Ent. Paris, i., 493. — 

 Megarthrus marginicollis, Heer, Fn. Col. Helv., i., 171. 

 In garden rubbish, &c. Long Benton. — T. J. B. Gibside. — 

 J. H. March — August. 



The male has the intermediate femora thickened, and the tibiae 

 slightly bent ; the posterior femora are also thickened, the tro- 

 chanters strongly dilated, the tibiae emarginate before the apex, 

 and the apex is furnished with a claw. — (Erichson. ) 



Sub-Family 8. MICROPEPLID^. 

 154. MiCROPEPLUs, Latreille. 

 1. M. PORCATiJS, Fab. 



Steph. Illust., Mand., iii., 55. — Erichson, Gen. etSpec. Staph., 

 911. — Omalium porcatum, Gyll. Ins. Suec, ii., 211. 

 In garden rubbish, and in damp places, not uncommon. 



