Peterson : Description of Stenomylus. 



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advanced in comparison with other Miocene camels, which are known, 

 and more nearly approaches that of the recent form. 



Foramina. — The condyloid foramina are, as in Lama huanaco, well 

 back and cannot be seen on a direct palate view. The posterior, 

 median, and anterior lacerated foramina occupy the same identical 

 position as those in the Lama. And, as in the latter genus, the foramen 

 ovale is immediately lateral to the foramen lacerum anterius and at the 

 antero-external angle of the tympanic bulla. The foramen rotundum 

 is also in the same relative position as that in the recent genus and 



Fig. I. Diagram of skull of Stenomylus gracilis indicating the position of the 

 foramina. Type No. 1610. f nat. size, cf, condylar foramen ; jlp, foramen lacerum 

 posterius ; Jim, foramen lacerum medium ; Jla, foramen lacerum anterius ; fo, foramen 

 ovale ; fr, foramen rotundum ; of, foramen opticum. 



cannot be seen on a direct palate view, as the base of the pterygoid 

 overhangs the exit (Fig. i is only a diagram indicating the different 

 foramina). The optic foramen is relatively somewhat large and is 

 placed closer to the foramen rotundum than is the case in Lama 

 huanaco. The surface of the bone in the region of the lachrymal 

 foramen is broken away, so that its position cannot be ascertained. 

 The palatine foramina are small and distributed along the palate close 

 to the alveolar border. The largest foramen is opposite p 4 , while in 



