NORTH AMEKICAN (OLKOI'TEIIA. 1 T)? 



Notes on the species of'AKOMAI^A inliubitiiig the 

 United States. 



By George H. Horn, M.D. 



The species of" Aiujiaahi uecurriiiu- within our t'auiial hmit.s may be 

 divided into three series, which have been considered genera by some 

 authors. 



Metasternuin not protuberant, the niiddle coxse luirrowly separated. 



Tarsal claws in part cleft. Anomala. 



Tarsal claws all simple Rhombonyx. 



Metasternnni j)r(>tuberant. middle coxaj rather widely separated Spilota 



Sub-genus Anomai.a. 



This division is the most numerously represented in our fauna. The 

 species are separated in the following manner : 



Fmnt claw of the anterior and niiddle tarsus very distinctly cleft at tip 2. 



Front claw of tlie anterior tarsus scarcely cleft, the small division being much 



within the tip parvnia. 



2. — Claw joint of anterior tarsi distinctly toothed beneath ?>. 



Claw joint of anterior tarsi not toothed 5. 



3. — Clypeus concave, the margin rather widely reflexed ; thorax always uniformly 



reddish yellow in color flavipennis. 



Clypeus Hat, margin narrowly reflexed; thorax either bicolored or entirely 



piceous 5- 



4. — Sides of clypeus nearly parallel ; thorax rather finely punctured. 



Thorax uniform in color, piceous with bronze surface lustre binotata. 



Thorax testaceous, with a triangular spot of varible size placed with its basae 



at the apical margin centralis. 



Sides of clypeus divergent posteriorly, the clypeus nearly semicircular, thorax 



coarsely punctured niinuta. 



5. —Elytra variable in color, sometimes entirely testaceous, but when marked with 



piceous the spots are arranged in transverse bands undulata. 



Elytra variable, sometimes entirely piceous; when bi-colored the piceous 

 spaces indicate longitudinal vittfe; intercostal intervals very irregularly 

 punctured lurida. 



A. parvula Burm. — Form oblong, testaceous: vertex and two thoracic spots 

 piceous. Clypeus transverse; sides oblique, margin narrowly reflexed, surface 

 punctate. Thorax transverse, narrower in front; sides regularly arcuate, base dis- 

 tinctly margined; surface very sparsely j)unetate. Elytra with striae of coarse 

 })unctures feebly impressed, the intervals scarcely elevated and nearly equal. 

 Pygidium sparsely punctate. Body beneath nearly smooth. Length .30 iucb ; 

 7.6 mm. 



