I'JG MANDIBULATA. COLEOPTKU A. 



Sp. 16. ruficollis. Niger, tliorace riijo, scgmcnton/m abdominis marginihus 

 pedihiisque testaccis, eirjtrisfusci.t, apice riijb. (Long. Corp. Ij liii.) 



Bo. ruficollis. Steph. Catal. 270. No. 2803. 



- Black, shining, glabrous, rather slender : head suborhiciilate : thorax bright 

 immaculate, rufuus: eh/tr a fuscous, with the apical half pale rujhns: ahdo- 

 men punctate, loith the margins of the segments broadly testaceous : legs 

 entirely testaceous : antennae incrassate at the apex, dusky, with the base 

 pale. 



Found in Norfolk, and occasionally within the metropolitan 

 district. 



Sp. 17. piciceps. Niger, thorace pedibusque riifo-testaceis, capite piceo, elytris 



ruj'escentibus, basi nigricanti. (Long. corp. 1.', lin.) 

 Bo. piciceps. Steph. Catal. 270. No. 280 1. 



Black, shining, elongate: head piceous, subtriangular : ///o?-a.r immacidate rufo- 

 iestaceous : elytra dull reddish, Avith the base dusky: abdomen black, with 

 the extreme apex slightly rujescent : legs pale rufous : antennae the same, 

 with the apex dusky. 



Taken near London in the sprinof. 



■fSp. 18. Simpsoni. Ater, antennis pedibusque fen-ugineis, elytris vix thorace 



longioribus. (Long. corp. 1^ lin.) 

 Bo. Simpsoni. Spence ? MSS. — Bo. Simpsoni. Steph. Catal. 270. No. 2805. 



Black, shining, smooth : head minvite, //■m?z^^u/ar-orbiculate, glabrous ; mouth 

 pale: eyes large: thorax subemarginate in front, transverse, and widened 

 behind : elytra scarcely longer or broader than the thorax, very finely punc- 

 tured, and faintly emarginated at the apex towards the outer angle : abdomen 

 twice as long as the elytra : legs and antennce ferruginous, the latter subfili- 

 form : palpi elongate, rufous, with the apex fuscescent. 



Taken " in Yorkshire by Mr. Simpson.'''— Kirby MSS. 



Genus CCCCXCVII. — Tachyporus, Gravenhorst. 



Antennae moderate, 11-jointed, increasing to the apex, the basal joint longest, 

 obconic, the three following oblong, slender, the remainder shorter, stouter, 

 the terminal one being the largest, ovate-acuminate. Palpi moderate, with 

 the terminal joint minute, subulate, the penultimate one incrassate and 

 swollen : head small, retracted within the thorax, which is ample, emargi- 

 nate in front, and truncate behind, the base as wide as that of the elytra, 

 the latter moderate: body short, obtuse in front: abdomen conic-obtuse, 

 setose behind: legs slender: i/ifce spinose. 



From Bolitobius the insects of the present genus may be known 



