440 Coleopterological Notices, V. 



gradually and distinctly incrassate toward apex. Prothorax fully one-lialf 

 wider than long, widest at the middle where the sides are very strongly 

 rounded, thence very rapidly convergent and broadly sinuate to the neck, 

 less convergent and just visibly sinuate to the base, which is about twice as 

 wide as the apex ; median fovese very feeble, separated by rather more than 

 one-fourth the width ; impression at basal fourth broadly, evenly arcuate, 

 minutely foveate in the middle and at each end ; lateral impressions large, 

 disconnected. Elytra confusedly sparsely and very feebly punctulate, rather 

 longer than wide, fully twice as long as the prothorax and two-thirds wider; 

 sides very feebly, gradually divergent from base to apex and just visibly 

 arcuate; discal stria deeply, coarsely impressed in basal half. Abdomen fully 

 as wide as the elytra but barely as long ; border strongly inclined, one-fifth 

 as wide as the disk ; first exposed dorsal one-half as long as the second, with 

 the usual fine pubescent line ; two to four gradually increasing in length. 

 Legs moderate, slender. Length 1.6-2.1 mm. ; width 0.6-0.7 mm. 



California (San Francisco and Sta. Cruz). 



The male has the abdomen more deflexed at apex, the venter 

 broadly, indefinitely impressed near the tip, but not otherwise at 

 all modified ; the anal segment has a cuneiform, anteriorly pointed 

 and submedian part, nearer the left than the right side and gradu- 

 ally flexed to the right anteriorly. This median part is probably 

 homologous with the flat enclosed pygidium of certain Euplectini, 

 but in the latter group it is bilaterally symmetrical. The female 

 has the transverse apex of the sixth ventral modified in a feeble but 

 complicated and indescribable manner, the anal segment behind it 

 broadly angulate and slightly but acutely produced at tip. 



Not closely allied to any other species, the largest of the genus, 

 about equal to Rafonus tolulse. It is represented before me by a 

 large and homogeneous series. 



S. parTiceps Makl.— Bull. Mosc, 1852, ii, p. 372 (Euplectus) ; Brendel : 

 Bull. Univ. Iowa, 1890, p. 79 (Faronus) ; Raffray ; Rev. d'Ent., 1893, p. 30 

 (Sagola). 



Rather broad, deep rufo-testaceous, polished, impunctate and 

 sparsely pubescent throughout. Head small, transverse, fully 

 three-fourths as wide as the prothorax, with the usual sculpture ; 

 tempora nearly straight behind the eye but distinctly convergent, 

 then more strongly rounded to the neck, the latter but slightly 

 wider than the apical margin. Prothorax rather large, about one- 

 fourth wider than long, widest and strongly rounded distinctly 

 before the middle, the sides convergent and deeply sinuate thence 

 to the base, the latter two-thirds wider than the apex ; sculpture 



