ENGID^E. TRIBOLIUM. 97 



Found occasionally within the metropolitan district beneath the 

 bark of trees : also in Devonshire, Somersetshire, Norfolk, Suffolk, 

 the New Forest, &c. " Not uncommon under the bark of decaying 

 trees (near Swansea)." — L. W. Dillwyn, Esq. " Windsor." — 

 Mr. Westwood. 



Sp. 2. pilicorne. Oblongum, piceum, antennarum apice pallido piloso. (Long. corp. 



li lin.) 

 Ca. pilicornis. Marsham.—Ce. pilicorne. Steph. Catal. 90. No. 968. 



Oblong, depressed, piceous, head and thorax punctured, the latter rather broad : 

 elytra striated, the striae somewhat obsolete : legs rufous : antennae ferruginous, 

 with the apex pale and slightly pilose. 



Probably a variety of the foregoing, from which it chiefly differs in being rather 

 more elongate, of a paler hue, with the apex of the antennae distinctly paler, 

 and very considerably pilose:— probably the Ce. deplanatum of Gyllenhal. 



Found beneath the bark of the oak, within the metropolitan 

 district. 



Sp. 3. picipes. Nigrum, nitidum, antennis pedibusque piceis, elytris substriatis. 



(Long. corp. 1 — 1^ lin.) 

 Ips picipes. Olivier.? — Steph. Catal. 91. No. 969. 



Black, shining : head punctured : thorax smooth, obscurely punctulate : elytra 

 obsoletely striated : antennae and legs pitchy and dull ferruginous. 



Genus CLVII. — Tribolium, MacLeay. 



Antenna 1 with the eight basal joints nearly equal, subglobose; scarcely incras- 

 sated towards the apex, the three terminal ones forming a loose perfoliated 

 club, the two first joints of which are somewhat bowl-shaped, the terminal 

 one transverse, oval. Thorax transverse-quadrate, slightly margined : body 

 sublinear, rather depressed: tarsi pentamerous, the fourth joint being 

 minute. 



fSp. 1. castaneum. Ferrugineum, capite thoraceque suhtilissime punctatis ; 



elytris punctato-striatis. (Long. corp. 2 lin.) 

 Tri. castaneum. Mac Leay.— Steph. Catal. 90, 409. No. 971* note. 



Ferruginous, with the head and thorax finely punctured, the elytra punctate- 

 striate : body beneath dull piceous : antennae with the apex pale : legs rufous. 



Mac Leay, in the Annulosa Javanica, says, " Tribolium castaneum is often to be 

 found in collections as an English insect, but is only, as I suspect, a visiter 

 of our island." Which last remark is probably correct, as the insect is a 

 native of India and Java. 



