NORTH AMKHICAN COLEOPTKRA. 33 



A. rectaiigllla Lee. — Form ohlonji, parallel, recalling Uloma rather than 

 Amara, piceous-hlack, sliininj;. Antcmise pale or slightly brownish. Head 

 stnooth, with long, hut feeble frontal impressions. Thorax scarcely a third wider 

 at base than long, apex feebly emariiinate, widest at middle, sides feebly arcuate 

 from the base and sliglitly narrowed at apex, hind angles rectangular, disc con- 

 vex, without lateral depression, basal fovea shallow, the outer slightly oblitiuc 

 and better marked, a few indistinct punctures along the basal region. Elytra 

 not wider at base than the base of the thorax, sides feebly arcuate, disc finely 

 and sharply striate, strise not punctured, intervals slightly convex. Body beneath 

 piceou.s-black, .smooth and shining, the epipleura- not paler. Legs entirely pice- 

 ous. Length ."iS-.SG inch,; 7 — 9 mm. 



The scutellar stria, is long and well detined, usually entire, very 

 rarely free at the posterior end. The series of ocellate punctures is 

 interrupted at niiddfe. In the male the middle and posterior tibite 

 are arcuate, tiie former more distinctly. 



The form of this insect is quite unlike the usual oval form of ('ell'i, 

 its parallel form recalling that of Uloma. The sides of the thorax 

 are regularly arcuate from the hind angles, while in gihba they are 

 oblique behind the middle. By measurement the thorax at base is 

 scarcely a third wider than long at middle. 



Occurs in Oregon and northern California. 



A. iiiipersi n. sp. — Oblong, not narrowed in front, piceous-black, shining, 

 sometimes with a faint feneous tin-.-e. Antennse usually pale, sometimes brown 

 externally. Head smooth, frontal impressions small, oblique. Thorax three- 

 fourths wider at base than long at middle, very little narrowed in front, widest 

 at middle in front, oblique posteriorly, the hind angles sharply rectangular, ba.sal 

 region finely punctate, except at middle, and with two fovea each side somewhat 

 variable in size, the outer always oblique, the inner more linear. Elytra a little 

 wider at base than the base of the thorax, the disc finely but sharply striate, 

 strife finely obsoletely punctate near the base, intervals flat, or very feebly eon- 

 vex. Body beneath piceous-blacik. smooth and shining, epipleurre paler. Legs 

 ))iceous. Length .30 — .36 inch.: 7.5—9 mm. 



The scutellar stria is long and inoderiitcly deeply impressed, usiuilly 

 free at its |)osterior end, sometimes entire. The .series of ocellate 

 punctures on the eighth interval is widely interrupted at middle. In 

 the male the middle tibiie are slightly arcuate, the posterior feebly 

 sinuate on the inner side. 



This species is closely related to recUuujula, but the latter has a 

 much longer thorax, and the bases of thorax and elytra are equtil in 

 width, so that the form is more parallel. 



Occurs in Colorado and New Mexico. 



A. gibbu Lee. — Oblong oval, distinctly n.irrowcr in front, brownish or nearly 

 piceous, shining, a feeble trace of bronze lustre, h-gs always i)ale. .\ntenna» pale 



TR.\.NS. \yi. KNT. soc. XIX. (5) M.\K(.H, 1892. 



