H. C. FALL. 117 



humeral umbone on the other ; punctuation well defined and rather 

 close, moderately coarse at apex, becoming finer basally. Mesepimera 

 reaching two-fifths to coxae ; metasternum punctate at middle, smooth 

 at sides ; abdomen finely alutaceous apically, less evidently so and 

 finely punctulate basally. Post-coxal plate of first ventral barely extend- 

 ing one-fourth the length of the segment. Legs very slender, basal 

 joint of hind tarsus fully as long as the next two. Length 2.7 mm. to 

 the end of the somewhat extended abdomen ; width 1.4 mm. 



Bismarck, N. Dak. (Wickham). 



Closely related to p2inctulata by its unusually closely punc- 

 tured elytra, but the latter species is rather more slender, 

 black, the apical bead of the elytra only paler, the mesepi- 

 mera extending three-fifths to coxae, the metasternum more 

 punctate at sides. 



S. semiopaca n. sp. 



Moderately broadly oval, piceous black, head, antennae, legs and ab- 

 domen in great part rufous. Prothorax black, highly polished and im- 

 punctate ; elytra diffusedly pale at base, the apex more distinctly nar- 

 rowly so; surface minutely alutaceous and dull, with sparse minute 

 punctures from which rise very fine hairs. Antennae about as long as 

 the head and prothorax, third joint slightly longer than wide, fourth and 

 fifth subequal, each nearly three times as long as the third and fully 

 four times as long as wide ; sixth slightly longer than the fifth, but not 

 quite as long as the seventh. Prothorax one-half wider than long, hind 

 angles moderately produced. Scutellum small, equilateral. Elytra 

 not quite as long as wide, basal stria wanting, the sutural stria merely 

 turned outward a little at base. Beneath nearly impunctate, a few 

 very minute punctures on the first ventral segment. Mesepimera 

 extending two-fifths to the coxae ; post coxal plate of first ventral very 

 short, extending less than one-third the length of the segment. Legs 

 slender, basal joint of hind tarsus just visibly longer than the next two 

 together. Length, 2.2 mm. ; width, 1.4 mm. 



Texas (Luling). A single example taken by the writer. 

 The minutely sculptured and dull elytra at once distinguish 

 this species from any previously described. 



S. ornata n. sp. 



Black, elytra each with an antemedian subtriangular discal spot 

 rufous, and the apical third or fourth paler; legs, antennae, abdominal 

 apex and middle of ventral surface pale. Antennae about as long as 

 the head and thorax, third joint triangular, as wide as long; fourth 

 twice as long as the third or slightly more, fifth and sixth subequal in 



TRANS. AM. ENT. SOC . , XXXVI. JUNE, 1910. 



