G2 J. L. LECONTK, M. D. 



One % , Orcjion. Very distinct by the short obtuse process of the 

 hind angle of the prothorax. 



W. liiteit Lee, Joiirn. Acad. Nat. Sc. 2d, v. 33) ; pollens || Lee, Proo. Acad. 

 Nat. Sc. Phila., v. 3:59. 



This species which has been incorrectly placed as a. synonym of iS. 

 pallida Mann, is smaller and different by the anteunae being stouter, 

 and the process of the basal angle of the prothorax longer filiform 

 and bent jnst as in S. Jr/i(/rra. 



S. pallida Mann, differs essentially by the basal excavations of the 

 prothora.K being separated from the emargi nation by an elevated ob- 

 liipie line which runs to the hind angle so as to render it carinate ; 

 the angle in front of the emargination is obtuse and the jjrot-e.ss be- 

 hin 1 the einargination is very near but separate fronj the .small hind 

 angle, compressed, deflexed and curved ; sides broadly rounded. The 

 antennae are slender. 



S. liligera. — Elongtite, black, protliorax bri^Iit yellow, shining, very con- 

 vex, HiKjly sp.irsely [)unctiihite, strongly cliannelled, twice as wide as long, 

 apical margin roiuided. strongly rellexed, basal margin deeply excavated and 

 strongly retlexed: hind angles incised, anterior process not truncate, hind 

 jtrocess fili(brin, suddenly bent forward; elytra more strongly punctured ; an- 

 tenn.-B ( 'J) ) as long as tiie body, 2d joint small, 3d nearly as long as the 4lb. 

 Length 3.0 mm. 



One S , Santi Barbara, California. Narrower than S. percnmis 

 and quite different by the prothoraeic characters. A specimen from 

 Vancouver which <l refer to this species has the front and hind mar- 

 gins and djrsal spot of the prothorax black. 



l>ITEM»fUS Lee. 



I>. oUtusitS.— Robust, black, prothorax twice as wide as long, smooth, 

 sides rounded and sinuate, red, margins blackish, strongly reflexed ; elytra 

 rather finely scabrous, punctured; antennce feebly serrate, 2d joint short, 3d 

 equal to the following. Lengtli 4 mm. 



%. — Sides of the prothorax suddenl}' rounded, deeply incised near the base, 

 anterior process obtuse with a small cusp projecting backwards, posterior pro- 

 cess rounded at tip, base excavated each side, medial part forming a lobe more 

 suddenly limited than in D. bidentatus ; antennae two-thirds as long as the 

 body. 



9.. — Sides of prothorax less suddenly rounded, subangulated and feebly 

 sinuate near the base, which is not lobed, bind angles obtuse, rounded ; anten- 

 nsB one-half as long as the body. 



Los Angeles and Saucelito, California. liarger and more robust 

 than D. bidctifatua, and remarkably different by the sides of the tho- 

 rax being rounded and the anterior process obtuse. 



