1136 COLEOPTERA 



Coxal lamina well developed, the trochanteral portion larger than 

 in Thoramus, but with the femoral portion smaller. Tarsi mode- 

 rately slender, basal joint of the posterior as long as the other four 

 taken together, penultimate very short above, distinctly lamellate 

 underneath. 



This genus is allied to Monocrepidius. 



2017. S. brunnea, n.s. Subparallel, slightly glossy, densely 

 clothed with fine, short, yellowish hairs ; reddish-brown, apex and 

 hind angles of thorax paler; legs testaceous, antennae rufo-testa- 

 ceous ; underside closely and finely punctate and pubescent, rufo- 

 castaneous. 



Head closely and moderately coarsely punctured. Antenna 

 rather slender, their tenth joint reaching backwards to the 

 thoracic angles ; third joint slightly longer than second, both 

 short, and, together, about one-third shorter than the fourth ; 

 joints 4-10 slightly serrate, eleventh with an ill-defined false ter- 

 minal joint. Thorax slightly longer than broad, convex, gently 

 narrowed in front of the middle, nearly straight behind ; posterior 

 angles stout, ridged above, directed backwards; its punctuation 

 moderately close, but rather finer than that of the head. Scutellum 

 densely and finely punctate. Elytra a little wider behind than at 

 the base, apices obliquely rounded and somewhat raised ; they are 

 distinctly and regularly striate throughout, the striae with rather 

 elongate but not closely-placed punctures ; interstices with numerous 

 fine punctures, appearing rugulose. 



In general appearance somewhat similar to Ex&olus rufescens, 

 but at once differentiated by possessing distinct lateral thoracic 

 margins. 



Length, 4 ; breadth, 1J lines. 



Howick. One individual only, probably a female. 



GENUS OP DOUBTFUL POSITION. 



Byrrocryptus. 



Nov. gen. 



Body elongate-oval, moderately convex. Antenna about as long 

 as the body, 11-articulate, joints 3-10 inwardly serrate ; they are 

 implanted on the forehead just before the front and inner margin of 

 the eyes ; there are no distinct fossse. Eyes rotundate, very pro- 

 minent, quite lateral, free, finely facetted. Labrum large, pro- 

 minent, separated from the forehead by a short membranous space. 

 Mandibles but little exposed, bifid at apex. Palpi short, with securi- 

 form terminal joints, that of the labial broader than the maxillary. 

 Head small, exserted, without evident genal lines. Thorax much 

 nariowed and depressed towards the front, bisinuate at base, finely 

 margined laterally. Elytra a little broader than the thorax, nearly 

 four times its length. Legs elongate, simple ; tibiae bispinose at the 

 extremity; torsi elongate, filiform, joints 1-4 decreasing, fourth 



