AMERICAN COLEOPTERA. 13 



Thorax unicolored or with merely a very small spot at sides 1. 



Thorax broadly margined with yellow 5. 



1. — Lateral margin of thorax scarcely visible from above. 



Elytra variegated over the entire surface acuta. 



Elytra with three reddish spots at the sides behind the middle. ..Dohriii.* 

 Lateral margin visible in its entire extent from above, thorax distinctly 



wider than the elytra 2. 



2. — Apical margin of last ventral single, no trace of carina coniiexa. 



Apical margin of last ventral double .3. 



3. — Tooth of anterior claws acute nearly as long as the claw; elytra tipped 



with red stellaris. 



Tooth of anterior claws with free edge rectangular; elytra not ornate 



with red 4. 



4. — Surface bluish; thorax distinctly wider than the elytra oriiata. 



Surface cupreous; thorax very little wider than the elytra. ..flavosticta. 



5. — Thorax wider than the elytra, margin very evident decipiens. 



Thorax not wider than the elytra, margin feeble 6. 



6. — Thoracic margin inferior posteriorly; disc coarsely and densely punc- 

 tured variegata. 



Thoracic margin lateral but narrow; disc sparsely punctured miina. 



A. acuta, Lee. — (PI. I, fig. 14.) This species resembles connexa in form, 

 and marking? but is usually smaller and with other differences as follows; 

 Thorax not wider at base than the elytra, margin narrow and scarcely visible 

 from above and somewhat inferior posteriorly. Last ventral segment rarely 

 with feeble sub-apical carina. Length .30 — .38 inch; 7.5 — 9.5 mm. 



I have great doubts concerning the validity of this species. I have 

 many specimens of connexa and acuta and am able thus far to sepa- 

 rate them in my cabinet but the characters as seen above are feeble 

 and may readily escape observation. I leave the species in its present 

 condition with the hope that some future student may find characters 

 which now escape my observation. 



Occurs with the preceding species. California and Utah. 



A. connexa, Lee. — (PI. I, fig. 13.) Form depressed, color piceous with 

 distinct seneous tinge, surface with erect black hairs sparsely placed, elytra 

 ornamented with yellow forming a lateral and subsutural stripe extending to 

 middle and very much contorted, united at their apices and posteriorly two 

 irregular transverse bands interrupted at suture and an apical .spot. Head 

 coarsely and densely punctured, front convex, vertex feebly carinate. Thorax 

 twice as wide as long, apex emarginate base truncate, sides rather broadly 

 arcuate and wider posteriorly, hind angles broadly rounded, margin moder- 

 ately wide, visible from above in its entire extent; disc with moderately deep 

 triangular median impression, and a lateral fovea at base surface coarsely 

 punctured, more densely at the sides than at middle. Elytra narrower at base 

 than the thorax, umbone moderate, sides gradually narrowed to apex, more 

 rapidly at apical third and rather strongly serrate; disc depressed, striate, 



* This species in a cabinet arrangement may be placed &iier flavosticta, other- 

 wise it interrupts a very natural sequence of elytral markings. 



