1272250 Antrostomus Serico-Caudatus, litho by J.T. Bowen, 1850 (litho) by Stephens, Henry Louis (1821-86) (after); Free Library of Philadelphia; (add.info.: The silky-tailed nightjar (Antrostomus sericocaudatus) is a species of nightjar in the Caprimulgidae family. See also 1272249. These prints appeared in the 2nd series of the Jour. Of the Acad. Of Nat. Sci. of Phila. In the bound volumes, they were hand-colored. (A.E. Phillips, Academy Editor). The two prints are on one page. From Jour. Of the Acad. Of Nat. Sci. of Phila. 2nd Series. Vol. 2, Pl. 12-13. (c.1850) The left (Pl. 12) shows a Tawny-bellied Screech Owl (Ephialtes Watsonii) and a White-fronted Scops Owl (Ephialtes Sagittatus). The right (Pl. 13) shows a Silky-tailed Nightjar (Antrostomus Serico-caudatus). John Cassin (1813-1869) was an outstanding American ornithologist, head of the Academy of Natural Sciences of Philadelphia\'s bird department and associated with the J.T. Bowen lithographic establishment. These are his taxonomic names.); 穢 Free Library of Philadelphia ; Print and Picture Collection - Jackson Collection of American Lithographs.