AMERICAN COLEOPTERA. 159 



than usual in the present tribe and without the usual excavation 

 on the outer side. 



One species occurs in our fauna. 



P. flavipes Lee— A small species with a general resemblance to some of the 

 varieties of Lebia analis. The thorax is short the sides strongly angulate, the base 

 narrowed. The elytra are very vaguely striate without punctures, the surface 

 finely alutaceous. The legs are always testaceous, the under surface of the body 

 piceous, except the prothorax. Length .14— .18 inch; 3.5 — 4.5 mm. 



Male. — The anterior tarsus is feebly dilated, the first joint somewhat spinous be- 

 neath, the second and third with a few squamules biseriately placed. The middle 

 tarsus is not at all dilated. The anal segment has one seta each side. 



Female. — Tarsi slender. Anal segment bisetose each side. 



This species varies greatly in color and forms three varieties. 



Var. flavipes Lee. — Entirely piceous. Legs testaceous. 



Var. bicolor Lee. — Head and thorax above and beneath pale reddish-yellow. 

 Legs testaceous. 



Var. .—Head piceous, thorax reddish-yellow, elytra piceous. Legs 



testaceous. 



Although very rare the spacies has a wide distribution, occuring in 

 the Gulf States, extending northward to Illinois and Kansas and west- 

 ward to Arizona. 



ONOTA Chaud. 



Mentum emarginate, without tooth, the epilobes slightly prominent; ligula 

 corneous, truncate in front, apex a little narrowed and bisetose ; paraglossre 

 membranous prolonged beyond the ligula and extending narrowly across its 

 apex; palpi moderate, terminal joint elongate-ovate. Labrum in front feebly 

 emarginate, sexsetose, base narrower. Mandibles expanded, laminiform, without 

 scrobe. Maxillary palpi moderate, terminal joint as in the labial. Antennas with 

 the first three joints and the base of the fourth glabrous. Head gradually nar- 

 rowed behind the eyes to the neck. Thorax angulate at the sides, base truncate 

 at middle, on each side slightly oblique. Elytra with two dorsal punctures, 

 situated on the third interval close to the second stria. Tarsi flattened and sub- 

 sulcate above, fourth joint bilobed. First joint of posterior tarsi as long as the 

 three following. Ungues pectinate. 



This genus is placed by Chaudoir in his Callidides, which seems as 

 convenient a position as any, taking the ligula as a key to classification. 

 This organ has had an exaggerated importance given it by many late 

 authors, and even with our limited number of genera I have found it 

 impossible to separate the truncatipenne series in smaller groups. In my 

 table of the genera of the tribe Lebiini, (Trans. Amer. Ent. Soc. ix, 

 p. 156), I have placed Eucserus, Pent agon tea, ( Rhombodera) and Onota. 

 in close approximation, indicating thereby a relationship between them, 

 while it must at the same time be admitted that each has other rela- 

 tionship about as well marked — Pentagonica with Lebia, Onota with 

 Calf a/a, and Eueserus with Ega. 



