TllOGIDiE. TRACHYSCELIS. 213 



dentate without; posterior very robust, with dilated spoon-shaped spurs: 

 tarsi short, with minute claws. 



^Egialia is distinguished by having the antennse nine-jointed 

 only, the body considerably dilated, and nearly globular, behind ; 

 the mandibles bifid; the palpi slender, with the terminal joint of 

 the maxillary attenuated ; the antennae free, with the basal joint 

 cylindric and nearly naked : the only known species frequents the 

 vicinity of the coast. 



Sp. 1. globosa. Nigra nitida, clypeo granulato, thorace Icevissimo, elytris striatis, 



impunctatis. (Long. corp. 1^ — 2^ lin.) 

 Ap. globosus. Illiger.—Mg. globosa. Steph. Catal 114. No. 1178.— Sc. glo- 



bosus. Donovan, xiv.pl. 470. 



Shining black : clypeus semiorbiculate, with elevated rough eminences : thorax 

 very smooth, impunctate: elytra glossy black, with the suture piceous, rather 

 faintly striated, the striae impunctate: body beneath rusty-piceous ; legs the 

 same : antennse and mouth ferruginous. 



Variable in size and in colour ; some examples being more or less ferruginous, 

 or testaceous ; arising, most probably, from their state of maturity. 



Not uncommon on most of the coasts of Great Britain during: the 

 summer months. " Southend." — Rev. F. W. Hope. " Seashore, 

 South Shields, abundant." — G. Wailes, Esq. "Extremely common 

 on the sand-hills every where (near Swansea)." — L. W. Dillwyn, 

 Esq. " Sands between Leith and Musselburgh." — Dr. Leach. 

 " Yarmouth." — W. C. Hewitson, Esq. 



Genus CXCIX. — Trachyscelis, Latrexlle. 



Antennce scarcely longer than the head, the basal joint elongate; the third and 

 two following very small ; the remainder forming an abrupt, short, laminate- 

 perfoliate six-jointed club. Palpi thickened outwardly, with the terminal 

 joint largest, somewhat obtrigonal: labrum transverse; slightly exserted, 

 with the tip entire: head broad: thorax transverse : body very convex : legs 

 very stout : tibia obtrigonal, furnished above with very numerous spines : tarsi 

 with the first joint longer than the intermediate. 



This singular genus, whose location is less natural than could be 

 wished, is distinguished from all the other lamellicorn insects by 

 having the tarsi heteromerous, the four anterior ones being five- 

 jointed, and the two posterior four-jointed only : the structure of 

 the antennse is also different, as is also the form of the terminal 

 joint of the palpi: — the indigenous species inhabits sandy districts. 



