1272249 1. Ephialtes Watsonii, 2. (Ephialtes) Sagittatus, litho by J.T. Bowen, 1850 (litho) by Stephens, Henry Louis (1821-86) (after); Free Library of Philadelphia; (add.info.: 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.