650 



ODONTORNITHES 



Geol. Soc. xxxii. p. 496) referred Hesperornis to the " Natatores." 

 In 1881, M. Dollo {Bull. sc. Dqmrt. du Nord, ser. 2, iv. p. 300) pro- 



Fig. 2. — Mandible of Hesperornis. (As before, after Marsh.) 



nounced it to be "une autruche carnivore aquatique." This notion 

 was popularized in 1884 by Prof. Wiedersheim {Biolog. Centralhl. 

 ii. p. 690), Avhile Prof. Dames in the same year {Palxontol. Ahhandl. 

 ii. pt. 3) took much the same view, as did also (though in a different 



Fig. 3. — Sternal Apparatus of Hesperornis. (As before, after Marsh.) 

 c coracoid ; /, furcula ; /i, humerus ; s, scapula ; st. sternum. 



fashion) an author in the Encydopxdia Britannica (ed. 9, xviii. pp. 

 43, 44), and Prof, von Zittel (Handb. Palxozool. Abth. I. iii. 

 pp. 826, 834). Almost simultaneously, however, Prof. Vetter 

 {Festschr. der Ges. Ms in Dresden, 1885, p. 109) explained Hesper- 



Fig. 4.— Pelvis of Hesperornis. (As before, after Marsh.) 

 a, acetabulum ; {/. ilium ; is. ischium ; p, pectineal process ; jj', os pubis. 



ornis as a Carinate Bird, exclusively adapted to aquatic life, and 

 having no affinity to the liatitx, though since he regarded these last 

 as reduced Carincdse its mutual relation to the Batitm was obvious, 

 and people began to confound them, speaking almost in M. Dollo's 



