STEXID.E. RUGILUS. ^ 277 



with the marginis of the segments, both above and below, pale yellow ; legs 

 and antennse paler. 



Much less abundant than the last : found within the metropolitan 

 district, and in Suffolk. 



Sp. 4. dimidiatus. Angustus, niger, capite thoraceque castaneis, antennis pedi- 



bvsque testaceis. (Long. corp. 1^ lin.) 

 Paed. dimidiatus. Kirhy MSS.—^n.dlmuWaius. Steph.Catal.'2S8. No. 3090. 



— Ast. dimidiatus. Steph. Nomen. 2d edit. col. 103. 



Very slender, black, obscure, glabrous : head triangular, chestnvt, obscurelj 

 punctured : thorax somewhat narrowed anteriorly, cheitnut, very faintly 

 punctured, with an obsolete elevated longitudinal line : elytra rather convex 

 and punctulated; abdomen rather broader than the coleoptra : legs tawny- 

 testaceous : palpi red : antenncz testaceous. 



Rather scarce : found near London, and in Suffolk. 



Sp. 5. sulcicoUis. Niger, nitidus, antennis pedibusque rufis, thorace rvfescente 



postice lineold excavato. (Long. corp. 1| lin.) 

 Paed. sulcicollis. Kirhy MSS.—^u. sulcicollis. Steph. Catdl. 2S8. A^o.3091.— 



Ast. sulcicollis. Steph. Nomen. 2d edit. col. 103. 



Black, shining : head suborbiculate : thorax reddish, with a short excavation 

 towards the hinder margin: elytra punctured, immaculate: abdomen with 

 the margins of the segments reddish: legs and antennae reddish. 



Hare : taken near Dover and Winchelsea. 



Genus DXXIV. — Rugilus, Leach. 



Antennae filiform, the basal joint large, clavate, third slightly longer than the 

 second, which with the fourth and fifth are nearly of similar form and 

 length, the remainder gradually increasing in thickness to the tip, the ter- 

 minal johit longer, subconic. Palpi filiform, maxillary with the third joint 

 ovate, subclavate, the terminal minute : lah-uin with two prominent denta- 

 tions anteriorly in the middle : head large, orbiculate : eyes small : thorax 

 small, much attenuated in front : abdomen broad, the penvdtimate joint 

 longest, the apex obtuse : legs long, slender ; tibim simple ; tarsi pentame- 

 rous, with the fourth joint simple. 



Rugilus, which was detached from Paederus by Dr. Leach, may 

 at once be known from that genus by having the fourth joint of the 

 tarsi simple, or entire, and also by having the thorax very much 

 attenuated in front, by which it likewise differs from the three pre- 

 ceding genera. The species occur beneath stones, moss, dead leaves, 

 refuse of gardens, and other rubbish, in low moist situations. 



