]\iar. iSoy ] Fall : On American Species of Acm/EOdera. 25 



relation of mariposa to dohrni is alluded to under the latter species. 

 The only specimens known to me are the type, and single examples 

 in the collections of Messrs. Fuchs and Van Dyke. Length, 7-8.5 

 ram., .28-. 34 inch. 



Habitat : California (middle Sierras). 



A. dolorosa, sp. nov. 



Moderately depressed, black, erect hairs rather long, fine, fuscous, slightly inter- 

 mixed with pale, especially towards the sides of the elytra ; elytra marked with very 

 small yellow spots which tend to arrange themselves in four transverse lines. The 

 spots are always small, frequently nearly obsolete or in part wanting, and never co- 

 alescent into anything like a fascia. Head with fine vertical carina. Thorax twice 

 as wide as long, widest at or a little before the base, not or scarcely wider than the 

 elytra, lateral margin inferior posteriorly ; surface closely rather coarsely punctate. 

 Elytra gradually narrowed to apical third, strice distinct except on basal half of disk, 

 punctures rather coarse. Presternum very feebly sinuate in front ; abdomen sparsely 

 punctate, erect hairs rather sparse and pale in color ; last ventral with small apical 

 plate. Length, 7-8.5 mm., .28-. 34 inch. 



Habitat : Thirteen examples are before me, all taken in Los An- 

 geles County, Cal. 



Dolorosa closely resembles the rnore feebly maculate specimens of 

 angelica, but aside from prosternal difference, the general form is less 

 parallel and more depressed, the sculpture coarser, the last ventral 

 broader at apex, with the apical plate more broadly arcuate. The re- 

 semblance to small specimens of fenyesi is also quite close, but this 

 latter may always be distinguished by the strongly toothed front mar- 

 gin of the prosternum, and the more hairy ventral surface. 

 A. postica, sp. nov. 



Moderately robust, subcylindrical, scarcely depressed, coppery bronze, elytra each 

 with two subapical marginal red spots. Erect hairs fuscous, mixed with grayish on 

 the head, thorax, and towards the sides of the elytra. Head with vertical carina. 

 Thorax not wider than the elytra, twice as wide as long, parallel in basal half, thence 

 moderately rounded and narrowed to apex ; lateral margin visible from above only in 

 front ; disk rather sparsely, sides densely punctate. Elytra parallel to apical third, 

 striae impressed only at sides and apex, punctures rather fine, intervals flat, uniseri- 

 ately punctate. Front margin of prosternum nearly straight ; abdomen finely sparsely 

 punctate, last ventral with ill-defined apical crest.' Length, 8 mm., .32 inch. 



Habitat : California (Los Angeles Co.). 



A single specimen collected by Mr. Coquillett and now in the 

 National Museum collection. 

 X. horni, sp. nov. 



Moderately depressed, black, prothorax and under surface slightly bronzed 

 sparsely clothed above with fine dark erect hairs, beneath with pale hairs ; elytra with 



