No.i.] COUES'S ORXITH, BIBLIOGRAPHY — CAPRIMULGIDiE. 701 



1850. Cassix, J. Descriptions of new species of Birds of tlio Family Capriinulgidie. 



< Ann. Maij. Nat. Hist., 2d ser, v, 1850, pp. 310-31:?. 

 From Proc. Phila. Acad., iv, 1849, pp. 236-239. 



1851. Cassin, J. Catalogue | of the | Caprimulgidaj | in the collection of | the Acad- 



emy of Natiu'al Sciences ( of Philadelphia. Published ivith Proc. Acad. Kat. Sci. 

 Phila., V, Nov. 1, 1851, not paged. Also sejiarate, 8vo, one signature (foil. 8). 

 Synonymatic. 



1851. Cassix, J. Notes of an examination of the Birds composing the family Capri- 



mulgidte, in the Collection of the Academy of Natural Sciences of Philadel- 

 phia. <] Proc. Acad. Xat. Sci. Phila. , v, 1851, j)p. 175-190. 



Stenopsis, p. 179; Luroealis, p. 189, gg. nn. The 'notes' are a critical running commentary 

 on all the New World forms, with mention of all the species which had come under the writ- 

 er's observation. An early, if not the first notice of the special subject at all to be called 

 critical. 



1852. Cassix, J. Monograph of the Birds composing the genera Hydropsalis, Wagler, 



and Antrostomns, Nnttall. <^Journ. Acad. Nat. Sci. Phila., ii, pt. ii, Jan. 1852, 

 art. xiv, pp. 113-124, pU. xiii, xiv. 



Hydropsalis, 0+ 1 spp. PI. xiv gives sections of tail-feathers of H. limhatut, H. lyra, H. 

 seijmentatus. H. psalurus. Antrostomus, 6 + 2 spp. PI. xiii, A. gerico-caudatus. 



1854. Bkewer, T. M. [Remark on exhibition of an egg of the Chuck-will's-widow 



(Antrostomus carolincnsis).] <^ Proc. Bosl. Soc. Nat. Hist., v, 1854, p. 56. 

 1858. BOLLE, K. Drei Ziegenmelker [Caprimulgidie] Nordamerikas. <[ Naumannia, 



viii, 18.58, pp. 150-163. 

 Aus dem Englischeu des Audubon — Caprimulgus [Antrostomui] carolinensis, O. [A.] vocif- 



erus. C. [Ohordeiles] virginianus. 

 1860. Hadfield, H. Note on the Piramidigs of Jamaica (Chordeiles). <^Zoologi8t, 



xviii, 1860, p. 6976. 



1860. Philippi, R. A., and Laxdbeck, L. Beschreibung zweier neuen Chilenischen 



Vogel aus den Geschlechtern Procellaria und Caprimiilgns. <^Arch.f. Naturg., 

 1860, (1), pp. 279-284, 

 Caprimulgus andinus, p. 270 ; Tha!assidroma segethi, p. 282. 



1861. Gould, J. Description of a New Species of the Family Caprimulgidne [Chor- 



deiles f pusillus]. ■ < P. Z. S. , xxix, 1861, p. 182. 

 1861. Gould, J. Description of a New Species of the Family Caprimulgidai. <^ Ann. 



Mag. Nat. Hist., 3d ser., viii, 1861, p. 262. 

 From P.Z. S., April 23, 1861, p. 182. 

 1861. Philippi, R. A., and Laxdbeck, L. Descripcion de una nueva especie de p^jaros 



del jenero Chotacabra o Caprimulgus [andinus, p. 31]. <[ Anales Univ. Chile, 



xviii, Enero 1861, i^p. 29-33. 



1865. Pelzelx, a. v. Ueber zwei neue Cain-iniulgiden aus Brasilien. <^ Verhandl. d. 



k.-k. zool.-bot. Ges. zu JFien, xv, 1865, Aihandl., 'pji. 985-988. 

 Hydropsalis ypanemce (Natt.) und H. pallescens (Natt.). 



1866. Pelzelx, A. V. Zwei neue Caprimulgiden aus Brasilien. <^././. O., xiv, 1866, pp. 



46-49. 



Aus Yerh. k.-k. Zool.-bot. Ges. TFteri, xv, 1865, A&/irtnd;., pp. 985-988. Hydropsalis ypanemoe, 

 H. pallescens. 



1866. Sclater, p. L. Notes on the American Caprimulgidai. <^ P. Z. S., xxxiv, 1866, 

 pj). 123-145, pll. xiii, xiv, woodcc. 



This is the most important paper on the special subject, being a monographic sketch of the 

 group, with reference to classilication as based upon anatomical structure, to geographical 

 distribution, and to the determination of the genera and species. After referring to the 

 leading authorities upon the subject, the writer remarks upon the whole family and its geo- 

 graphical distribution, and proposes to divide it into two sections, readily distiuguished by 

 the structure of the feet. In one of the these, Caprimulgince proper, the outer digit has only 

 four phalanges, and the claw of tlie third or middle digit is pectinated ; while in the other 

 the same claw is not peculiar, and the fourth digit has the usual number of phalanges, five. 

 The sternum also offers important characters, aa was shown by Blanchard. {Ann. du ifut. 



