OF PIIILADELPUIA. 311 



distinct impressed transverse line at base : elytra opaque, rather 

 hairy, with minute transversely-confluent punctures. 



Lenjrth less than a quarter of an inch. 



Found near Fort Osajie. 



[This and the four following species belong to Ptdilus. This 

 one is described as Pyrochroa inonuita Uandall, Ped. imiis Ncw- 

 mau, and Ped. nigricans Zicgler. — Leg.] 



6. A. COLLARIS. — Black ; thorax rufous ; two basal joints of 

 the antennae at tip dull rufous; mouth pale. 



Inhabits Missouri. 



Body black, impunctured, a little hairy : antennae a little ser- 

 rate, two basal joints dull rufous at tips : mouth pale, palpi dusky : 

 thorax transversely oval-orbicular, rufous, polished, a transverse 

 impressed basal line : elytra hairy, with small, numerous, irregular 

 punctures. 



Length one-fifth of an inch. [247] 



Distinguished from the preceding by the color of the thorax. 



[Afterwards described as ]\(f. rujithorax Newman, and P. 

 maryiiiiroUis (var.) Zieglor. — Lkc] 



7. A. TERMiNALis. — Black, punctured; thorax rufous; elytra 

 yellowish-white at tip. 



Inhabits Missouri. 



Body black, punctured, with short hair: head p(tlished, im- 

 punctured : antennae black-brown : labrum and mouth yellowish- 

 white : maxillary palpi dusky at tip : thorax rufous, transversely 

 oval, impunctured, a transverse impressed basal line : elytra with 

 tran.sversely confluent punctures, a yellowish-white terminal spot: 

 pectus rufous: nails one-toothed beneath. 



Length more than one-fifth of an inch. 



Found in Missouri and Arkansaw. 



[Probably the male of Ped. coUaris. — Lec] 



8. A. LABIATUS. — Black, exterior margin of the thorax, ely- 

 peus, labrum, and basal joints of the feet rufous. 



Inhabits Missouri Territory. 



Body black, with minute punctures : head obsoletely piceous 

 on the vertex, a little indented above the antennaj : antennae fili- 

 form, somewhat serrate, two first joints rufous: clypeus, labrum, 

 and mouth, rufous : mandibles black : thorax punctures sparse, 

 1826.] 



