of the Royal Physical Society. 311 



interstices combine together shortly before reaching the apex ; a 

 few very minute papillae at the base degenerate into a slightly 

 rugose surface along the margin, and a row of punctures occurs 

 on the marginal space and at the base ; the margin distinct and 

 equal all round, not being expanded; the humeral tooth distinct. 

 Under side polished and shining ; division of head behind men- 

 turn marked ; punctures on segments of abdomen same as in 

 preceding species ; anterior tibiae furnished with two long teeth, 

 one short one behind, and a small one behind it, — so that they 

 may be said either to be bidentate and bidenticulate behind, or 

 tridentate and unidenticulate behind, it being doubtful whether 

 the third tooth should go with the large teeth or the small one ; 

 intermediate tibiae with one prominent projecting tooth, and a 

 number of smaller and decreasing ones ; posterior tibiae without 

 teeth. 



5. S. Clivinoides, mihi. 



Niger, nitidus ; antennis pedibusque nigro-piceis ; capite f route 

 bifoveolato, foveis longitudinaliter rugosis, postice una et altera 

 parte rugoso et punctato, vertice laevi ; thorace lateribus fere 

 parallelis; elytris parallelis, longitudine dimidii corporis, 

 striato-punctatis, ad basin forte et lateribus leviter papilloso- 

 rugosis, striis apice paulo laevioribus; tibiis anticis tridentatis, 

 postice unidenticulatis. 



Long. 6i-5f lin., lat. If lin. 



Small ; black, shining. Head quadridentate in front, the two 

 outer teeth longest ; two deep longitudinal foveae on each side of 

 front, exactly behind margins of labrum ; the foveae are longitu- 

 dinally rugose ; from each a sinuate furrow runs backwards and 

 outwards, and two or three others on each side start from it or 

 near it about the middle, faintly at first, but becoming wider 

 and deeper as they go backwards, and stopping about the same 

 distance from the front as the back part of the eye does ; where 

 they stop there are some smaller lines or furrows, and two or 

 three irregularly-shaped punctures, which extend faintly across 

 the head, except at the middle, which is smooth, as is also 

 the space behind ; the eyes are rather flat, and are somewhat 

 encroached on behind by the integument, but there is no swell- 

 ing behind them ; antennae pitchy black ; mandibles moderate, 

 shorter than head, bicarinate, with oblique wrinkles or subcarinae 

 within the interior ridges ; labrum with a slight rounded pro- 

 jection on each side and in the middle, and a puncture in each ; 

 mentum obliquely rugose. Thorax rather broader than long, 

 impunctate; sides nearly parallel, narrowly margined; angles 

 rounded ; tooth or fold on the sides very small ; dorsal line 



