H. C. FALL. 115 



apical third, thence convergent and nearly straight to the hind angles, 

 which are very obtuse but somewhat defined ; surface sculpture as 

 uaual. Elytra not quite one-half longer, and at base just visibly wider 

 than the prothorax, slightly wider behind, rather coarsely punctate. 

 Abdomen sparsely punctate. Length 2.4-3. mm. 



Male. — Sixth ventral segment not distinctly modified, the punctures 

 but little finer and closer than on the preceding segment ; seventh seg- 

 ment with a broad very short rounded lobe-like prominence at middle. 



Female.— Head a little smaller than in the male, sixth ventral with 

 the usual long and narrowly rounded median lobe. 



Southern California — Pomona (type), Pasadena, Ojai. 

 Differs from the other members of this group by the simple 

 sixth ventral of the male and the trimaculate elytra. 



A. minieticus n. sp. 



Almost precisely similar in appearance to the preceding 

 except that the elytra are uniformly flavate, and the size 

 averages a little smaller. The sixth ventral of the male is 

 flattened and rather densely punctate and pubescent at mid- 

 dle as in linearis, but the seventh is not in the least produced 

 as it is in the latter species, which is also rather larger and 

 normally darker in color. Length 2.-2.6 mm. 



Pomona, California — six examples. 



A. princeps Csy. 



A male specimen in my collection from Tulare County, 

 California, possesses exactly the remarkable sexual char- 

 acters of this species as described by Casey ; it is, however, 

 entirely blackish, the elytra just perceptibly paler piceo- 

 castaneous. The type is described as pale flavate, and is 

 probably immature. 



DELEASTER Er. 

 D. trimaculatus n. sp. 



Similar to concolor in size and other characters, except as 

 follows : Head blackish, prothorax and abdomen posteriorly 

 more or less darker than the elytra, the latter with a scutellar 

 spot and the apex — more broadly toward the sides — piceous. 

 Antennae more elongate, the outer joints longer, the tenth 

 one-half wider than long ; elytra slightly wider than long, 

 very finely rather closely punctate, alutaceous and dull. 



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



