-EGIALOENITHID^. 183 



Geuus AGIALORIVIS, Lydekker (n. gon.). 



The humerus (fig. 41) is short and stout, with a long, prominent, 

 and augulated delto-pectoral crest, a deep coraco-humeral groove, a 

 large and flattened ectepicondylar process, a laterally compressed 

 head, no tricipital fossa, and the surface for the brachialis anticus 

 confused with the palmar depression. The ulna is longer than the 

 humerus, and has a well-marked surface for the insertion of the 

 brachialis anticus. The proximal phalangeal of the second digit of the 

 manus is indistinguishable from that of the Laridce. The anterior 

 sternal angle of the coracoid is inflected, and there is a perforation 

 at the base of the subclavicular process. 



The humerus indicates that the genus was exceedingly common 

 at the period of the Phosphorites ; and the other bones are referred 

 to the genus partly from these characters, and partly from the 

 probability of their belonging to this common form. 



-Sgialornis gallicus, Lydekker (n. sp.). 

 The type species. Length of humerus 0,026. 

 Hub. Europe (France). 



The followhuj sjiecimeiis luere obtained from the Phosphorites of Bach, 

 iiear Lalbenque (Lot), and were purchased in 1884. 



A. 60. Thirteen specimens of the humerus. The types ; one of 



(Fig.) those of the right side being represented on an enlarged 



scale in the accompanying woodcut. In addition to the 



J^t/ia/ornis gal/u-iis.—'Palmar aspect of the right humerus (A) and of the 

 proximal phalangeal of the index digit of the left manus (B); from the 

 Quercy Phosphorites. 5. Letters as in fig. 39, p. 177. 



