NORTHUMBERLAND AND DURHAM. 39 



Rather rare. " Twizell."— P. /. Selhy, Esq. Near a hot bed 

 at Long Benton. — T. J. B. September. 



2. L. BATYCHRUS, Kuock. 



Erichson, Gen. et Spec. Staph., 335. — Stei')h. Manual, No. 

 3218. — Staphylinus batychrus, Gyll. Ins. Suec, iv., 480. — 

 Gjrohypnus batychrus, Steph. Illust, Mand., v., 263. — 

 Gyrohypnus quadrisulcus, Kirhy, Steph., I.e., v., 264. — 

 Gyrohypnus diaphanus, Mai^sh., Steph., I.e., v., 259. — 

 Gyrohypnus longicollis, Kirhy, Steph., I.e. — Xantholinus 

 episcopalis, Boisd. et Lacord. Faun. Ent. Paris, i., 416. 

 Hot-beds and dung-heaps. " Twizell." — P. J. Selhy, Esq. 

 Long Benton. — T. J. B. Ravensworth. — J. H. 



Very variable in the number of punctures which constitute the 

 thoracic series, which appears to depend upon the size of the 

 specimen, and the length of its thorax. In some examples, various 

 supernumerary punctures are found crowded together in some 

 part of the range, as if the dimensions of the individual did not 

 allow of their being arranged in extension. Gyrohypnus apicalis, 

 Kirby, judging from the description, appears to belong to this 

 species or the preceding. 



3. L. LINEARIS, Grav. 



Heer, Fn. Col. Heh., i., 243. — Gyrohypnus sulcifrons, Kirhy, 



Steph. Illust, Mand., v., 260. — Gyrohypnus pusillus, 



Steph. Illust, Mand., y., 264. 



In the same places with the preceding, but much more frequent. 



Long Benton. — T. J. B. Under sea-weed at Marsden. — J. H. 



May. 



This, which Erichson accounts a variety of the preceding, is 

 very uniform in its characters, and often occurs without the other 

 accompanying it. 



Sub-Family 2. P^DERIDES. 

 126. Cryptobium, Mannerheim. 

 1. C. Fracticorne, Payh. 



Steph. Illust.j Mand., v., 271., pi. xxvii., f. i. — Erichson, 

 Gen. et Spec. Staph., 575. — Lathrobium fracticorne, Gyll. 

 Ins. Suec, ii,, 369. 

 *' Twizell."— P. J. Selhy, Esq. 



