of the Royal Physical Society. 301 



the middle of the compressed sides, both above and below, nearly 

 to the end of the last joint ; some of the joints with one or two 

 punctures on the polished space ; clypeus marked off from the 

 head by a straight impunctate line, which ends at each side in a 

 deep puncture or fovea, from which a shorter and fainter line 

 runs obliquely outwards and forwards to the exterior base of the 

 mandibles; from each of these two fovea? an impunctate line 

 runs straight backwards and very slightly outwards, ending in 

 another deep elongate puncture or fovea on each side of the front 

 between the eyes, so that the marking on the front consists of 

 three lines forming three sides of a square, each corner being 

 marked by a deep puncture, the fourth or posterior side of the 

 square being open or without any line ; besides these punctures, 

 there are two others on the inner edge of each eye, one at the 

 middle, which partly interrupts a longitudinal groove running 

 along the side of the eye and head, and the other behind, 

 where the groove terminates at the posterior inner angle of the 

 eye ; there is no tumour behind the eye, but its posterior mar- 

 gin is slightly encroached on by the black chitinous substance 

 of the head, but without the contour of the eye being altered. 

 Thorax subquadrate, slightly cordiform, impunctate, shining, 

 much wider than the head, narrower than the elytra, emar- 

 ginate, becoming narrower behind; anterior angles projecting 

 and rounded ; sides gently rounded and margined, the margins 

 extending round the anterior angles, and then gradually be- 

 coming wider and disappearing before the middle ; the base not 

 margined; a channel runs along the sides inside the lateral 

 margin, in which six or eight large impressions are placed widely 

 apart ; the base is transversely produced in the middle, as in 

 Lebia ; at the sides it is straight, and the posterior angles are 

 nearly right-angled ; dorsal stria faint and interrupted until to- 

 wards the base, where it becomes deeply impressed ; a very deep 

 fovea on each side of it, nearer the sides than it, with a longitudinal 

 impunctate groove in the bottom of the fovea ; prosternum with 

 a faint longitudinal depression, impunctate. Scutellum small 

 and impunctate. Elytra elongate, parallel, margined, punctate- 

 striate, the striae deepest towards the apex and margin, the punc- 

 tures in the striae small, and not very close to each other ; the 

 stria? are seven in number, and there is no abbreviated stria 

 near the scutellum ; interstices flat and impunctate, except the 

 marginal interstice, which is impressed with a row of large, 

 round, circular depressions, each with a point in the centre; 

 the elytra are somewhat flat on the disk, and they suddenly 

 and rapidly descend at the sides and the apex, which is not 

 truncate, but sinuate; the first and second stria? join together 



