BY THOMAS G. SLOANE. 455 



H A K P A L I N I . 



Gnathapiianus riverine, n.sp. 



Rulnist, pjuallel ; prothorax subquadrate ; elytra striate, the 

 interstices lightly convex, third with six or seven punctures ; 

 mentum with median tooth feebly developed. 



Elytra blackish-green (often with a brassy tinge) ; head, 

 prothorax, undersurface and legs black. Head smooth, convex ; 

 front with a light punctiform impression on each side ; clypeal 

 suture lightly marked between the frontal impressions, eyes 

 convex. ^. Pi-othorax subquadrate (3-25 x 4 mm.), widest 

 about middle, hardly at all narrowed behind, wider across base 

 than apex, smooth, lightly convex ; sides lightly rounded, more 

 decidedly and roundly narrowed to anterior than to basal angles ; 

 anterior margin emarginate ; base subtruncate ; anterior angles 

 prominent, very obtuse ; basal angles broad, not marked ; border 

 narrow, wanting oidy on middle of anterior margin, reflexed on 

 sides ; posterior fovea? well marked, about half way between 

 median line and margin ; median line very lightly impressed. 

 Elytra very little wider tlian prothorax (7"75 x 4-5 nnn.), 

 subparallel on sides, lightly con^'ex ; base truncate ; apical curve 

 obsoletely sinuate on each side ; striae deep, simple ; striole at base 

 of second interstice strongly impressed, elongate ; interstices 

 convex, third with six or seven widely placed punctures along its 

 course from just behind striole of second interstice to near apex, 

 these punctures more closely placed on posterior half ; ninth 

 interstice punctate as usual in genus. 



9. With interstices of elytra hardly as convex as in ^, but n(jt 

 differing otherwise except sexually. 



Length 13, breadth 4-5 mm. 



Hah. — N..S.W., Urana District, (Sloane) ; Tamworth (Lea) ; 

 (I find it in considerable numbers, 20 miles N.E. from Urana 

 during the autumn and winter.) 



A distinct species. 



