NORTH AMERICAN HYMENOPTERA. 325 



Bibliography and Synonymy. 



PEMPHREDON Latr. 



Pemphredon Latr., Prec. des caracteres, 128, 1796; Hist. Nat. des lus. xiii, 325, 

 1805. 



Cemonus Jiir., Nour. Meth. des Class. Hyni. i, 214, pi. 11, 1807. 



Cerotophorus Shuck, Foss. Hym. 198. 1837. 



Diphlebus Westw., lutr. Class. Ins. (synopsis of genera), p. 81. 1840. 



Chevrieria Kohl., Schweiz., Eut. Gesell. vi, 658, 1883. 

 P. concolor Say. 



P. concolor Say, Long's 2d Exped. App. p. 339, 1834 : Packard, Proc. Ent. Soc. 

 Phila. vi. 391, 1867, J . 



Cemonus concolor Harr., Catal. Ins. Mass. p. 558, 1835. 



a morio Cress., Proc. Ent. Soc. Phil, iv, 486, 1865, 66, 9 . 

 P. annularis n. sp. 

 P. montanus Dhlb. 



P. montamts Dhlb., Hym. Eur. i, pp. 262 and 508, % 9, 1845; Costa, Ann. Mus. 

 Zool. Napoli, vi (1866), 38, 'J, 9 ; Andre, Spec. Hym. iii, 197, % 9, 1888. 

 P. concolor Prov. 



P. concolor Prov., Faune Eut. Can. 646, 9, 1883. 

 P. Rileyi n. sp. 

 P. confertim n. sp. 

 P. nearcticus Kohl. 



P. nearcticus Kohl., Ann. des k. k. Naturh. Hofmuseuni, Wien, v. p. 55, 9 "^ > 

 1890. 

 P. inornatus Say, Long's 2d Exped. 339, 1834 ; Lee, Conipl. Writings, i, 229, 1854. 



Cemonus inornatus Pack., Proc. Ent. Soc. Phila. vi, 389, 9 % ■ 1867. 

 P. bipartior n. sp. 

 P. tenax u. sp. 

 P. (?j marginatus Say. 



P. marginatus Say, Bost. Journ. Nat. Hist, i, 379; Lee, Conipl. Writings, ii, 

 760, 1859. 



DIODONTUS Curt. 



Diodoyitus Cnrt., Brit. Ent. xi, 496, 1834; Shuck, Foss. Hym. 184. 1837. 

 D. occidentalis n. sp. 

 D. rugosus n. sp. 

 D. flavitarsis n. sp. 

 D. americanus Pack. 



D. americanus Pack., Proc. Ent. Soc. Phila., vi, 393, 9, 1867. 

 D. Gillettei n. sp. 

 D. nigritus u. sp. 



AMMOPLANUS Gir. 

 Ammoplanns Giraud, Ann. Soc. Ent. Fr. Ser. 4, t, ix, 469, pi. xii, fig. 1. 

 Hoplocrabrun Destefani, Natural. Siciliano, vi, p. 60, tav. ii, figs. 1-6, 1886 

 (teste Kohl). 

 A. (?) columbianus Kohl. 



A.(?) columbianus Kohl. Ann. k. k. Naturh. Hofni. (Wien), v, p, 61, 1890, 9. 



TRANS. AM. ENT. SOC. XIX. DECEMBER, 1892. 



