756 BULLETIN UNITED STATES GEOLOCxICAL SURVEY. [TolV. 



1626. Lesson, [R. ] r. Quelques Obsorvatious siir les Falco chrysaetos ct fulviis, iiui 

 prouveut ridcntit^ de ces deux especes ; jiar P. -J. Selby. . . . <^Ferua8. 

 BuU., 2« sect., vi, 1825, pp.96, 97. 

 Extrait des Mem. Wern. Soc, iv, jjt. ii, 1823, pp. 428-433, q. v. 



1S25. Lessox, [R. ] P. Reiiiarqvies sur diverse.s opinious finises sur la distinction sp6ci- 

 lique, ou sur I'ideutite des Aigles commuu et dor6 ; par James Wilson. . . . 



< Feruss. Bull., 2« sect., vi, 1825, p. 97. 



Extrait des Mem. Wern. Soc, iv, pt. ii, 1823, pp. 434-448, q. v. 

 1825. Lesson, E. P. Esquisses ornitliologiques, ou observations sui* les rapports qui 

 existeut daus un des groupes les plus nombreux en espJ^ces d'oiseaux ; par N.- 

 A. Vigors, juu. . . . <^Feniss. B till., 2<' sect., vi, 1825, pp. 406-408. 



^•s.iriiit dxi ZoologicalJournal, i, Oct., 1824, pp. 308-446; cette partie des "Esquisses" ren- 

 fermantla classification "qiiinaire" des Falconid6s. 



1825. Vigors, N. A. On a new genus of Falconida^ [Gampsonyx swaiusonii, sj).n.,p. 

 69]. <^Zool. Journ., ii,No. 5, Api"., 1825, ijp. 65-70. 



A subhead, being part of the 2d instalment of "Sketches in Ornithology; or," etc. Cf. 

 Feruss. Bull., 2= sect., vii, 1826, p. 106 ; Isis, 1830, pp. 839, 840. 



1825. Vigors, N. A. On a new genus of Falconidie [Nauclerus riocourii, p. 386, sp. n. ]. 



<^Zool.Joi(r>i., ii, No. 7, Oct., 1825, pji. 38.5-387. 



A subhead, being part of the fourth instalment (pp. 368-400) of the series of papers entitled 

 " Sketches on Ornithology ; or," etc. Cf. Feruss. Bull., ix, 1826, p. 91 ; Isis, 1830, pp. 1042, 1043. 



1826. Lesson, R. P. Esquisses ornitbologiques, etc., sur un genre nouveau des Fal- 



conidie; par M. N. A. Vigors. . . . < FcVmss. iJit/?., 2« sect., vii, 1826, p. 106. 

 Oampsonix (sic) swainsonii. — Zool. Journ., H, JHo. 5, Avril, 1825, p. 65. 



1826. Lesson. [R. P. ] Sur un nouveau genre de la famille des Faucons; i)ar Vig- 

 ors. . . . < FeVHS.«. i'M^., 2^ sect., ix, 1826,p. 91. 

 Nauclerus riocourii. — Extrait du Zool. Journ., ii, 1825, pp. 385-387. 



1829. Audubon, J. J. Notes on the Bird of Washington (Falco washingtoniana), or 

 Great American Sea Eagle (fig. 53). <^ Loudoii's Mag. Nat. Hist., i, 1829, jip. 

 115-120. 



1829. Johnson, J. Vision of Birds of Prey. < Loudon's Mag. Nat. Hist. , ii, 1829, p. 473. 



From Medico-Ghirurgical Review. 



1829, "T. F.'' Au Arrangement of the dift'erent Species of Falcons found in Great 



Britain. < Loudon's Mag. Nat. Hist., i, 1829, pp. 217-221, figg. 85-90. 

 14 spp., under 6 sections. 



1830. Bennett, [E.T.] [Polyborus ? hypoleucus, sp.n.] <P. Z. S., Dec. 14, 1830, 



p. 13. 

 1830. Brehm, C.L. Die grossen Adler luit befiederteu Fussen von Brehm. <^Oken's 



Ms, Bd. xxiii, 1830, pp. 9(5-106. 

 Aquila fulva, A. melanaetos, A. chrysaetos "Brehm". 

 1830. Vigors, N. A. Gampsonyx [swaiusonii], eine neue Sippe der Falconiden. 



< Oken's Lsis, Bd. xxiii, 1830, pp. 839, 840. 

 Aus d. Zool. Journ., ii, 1825, p. 65. 



1830. Vigors, N. A. Nauclerus [riocourii], neue Sippe der Falconiden. <^Oken's Isis, 



Bd. xxiii, 1830, pp. 1042, 1043. 

 TTebers. d. Zool. Journ., ii, 1825, p. 385. 



1831. Anon. The Bald E-agle [Haliaetus leucocephalus]. < D. J. Browne's The 



Naturalist, i, No. xii, Dec, 1831, pp. 359-367. 

 Popular account, chiefly compiled from "Wilson. 

 1831. Audubon, J. J. An account of the habits of the American Goshawk (Falco 

 palumbarins, Wils.). < Edinh. Journ. Nat. Geogr. Sci., iii, 1831, pp. 145-147. 

 Not seen. 

 1831. Bennett, [E. T.] [Remarks on two specimens of Polyborus hyijoleucus which 

 had been living in the Society's Garden.] < Philos. Mag., ix, 1831, pp. 63, 64. 

 From P. Z. S., Dec. 14, 1830, p. 13. 



