4- MANDIBULATA. — COLEOPTERA. 



Si- Agaricina. Linnt.—Sc. Agaricinum. Steph, Catal. 71. No. 774. 



Black, shining, very smooth, antenna?, apex of the elytra and legs pale-brown 

 or rufescent; elytra with a single stria near the suture, not produced an- 

 teriorly; apex of the body rufo-piceous. 



Some specimens are of a paler hue than others. 



Frequently taken among rotten fungi in Battersea-fields and iu 

 other places near London. " Wandsworth Common." — Mr. Wa- 

 terlwuse. " Boletus of the Ash, Netley." — Rev. F. W. Hope. 



Sp. 2. Boleti. Piceum Iceve glabrum, antennis pallidis, pedibus rufis. (Long, 

 corp. f — $ lin.) 



Sc. Boleti. Panzer.— Steph. Catal. 72. No. 775. 



Head, thorax, and elytra piceous, minutely punctured ; the latter paler at the 

 apex, with a single sutural stria: body beneath piceous; legs rufous; an- 

 tenna 3 pale. 



I very much doubt whether this be distinct from the last described, or that 

 more than one species of the genus is found in Britain ; the dissimilarity in 

 the colour of the antenna? (which may arise from immaturity), and the paler 

 general hue, being the chief points of distinction between the two. 



Taken near London, and in other parts of the country. " With 

 the preceding species." — Rev. F. W. Hope. 



Genus CXVIII. — Myl^chus, Latreille. 



Palpi, maxillary with the basal joint subulate ; labial with the terminal joint 

 obtuse. Antennae incurved, rather shorter than the thorax, the two basal 

 joints distinctly stouter than the following, cylindric; the third a little elon- 

 gate, obconic, the three following least, the fourth being cylindric, the fifth 

 and sixth somewhat transverse; the remainder forming a five-jointed club, 

 with the articulations transverse, the eighth, ninth, and tenth, being nearly 

 equal, and the eleventh largest, with its apex rounded: thorax subtrapezi- 

 form: tarsi in the male with the three first joints dilated; posterior femora 

 of the male with a small triangular acute tooth beneath. 



The subincurved antennae, with the two basal joints manifestly 

 thicker than the three next, the eighth not in the slightest degree 

 less than the other joints of the club, and the last obtuse at the 

 apex, are the chief points of distinction between Mylsechus and 

 the three following genera. 



Sp. 1. brunneus. Oblongo-ovatus, castaneo-brunneus subtilitcr vageque punctu- 



latus, breviter pubescens. (Long. corp. 1 lin.) 

 My. brunneus. Latreille.— Steph. Catal. 72. No. 776. 



