Cope.J 17o [Aug. 17, 



ber of vertebrae, supposed to belong to the same individual by my assis- 

 tant, Russell Hill, who discovered it. 



The proximal extremity of the maxillary bone is depressed, both the ex- 

 ternal and internal aspects presenting prominent ribs. The inner rib soon 

 disappears, and the alveolar border becomes interior in position, the teeth 

 then assuming a more pleurodont character. The external rib continues, 

 and rises so as to form the superior border of the jaw, but continues to 

 have an oblique direction outwards. It is separated by a longitudinal con- 

 cavity from the portion that bears the alveoli. The teeth are subcylindric 

 in section, and the crowns are acute and incurved. The proximal end of 

 the maxillary forms a condyle for transverse movement, which is divided 

 by a transverse groove. Above this groove the extremity is fissured. 



The vertebral centra are somewhat hour-glass shaped, and present a 

 deep longitudinal fossa on each side of the base of each neural and haemal 

 arch, which is divided by a vertical rod on partition of bone, which 

 strengthens the arch. The arrangement is that seen in the genus Empo, 

 The sides of the centra are marked with rather regular linear grooves, 

 which disappear at the contraction. 



Measurements. M. 



Length of maxillary bone preserved 066 



Distal depth Oil 



" width 005 



Proximal depth 005 



width 006 



Eight teeth in. 020 



( longitudinal 010 



Diameter of caudal centrum -< transverse 009 





vertical 010 



( longitudinal 009 



Diameter of anterior centrum -\ transverse 011 



vertical 009 





In the 0. shear •erii the dental alveoli are transverse to the long axis of the 

 maxillary bone, while here they are longitudinal or round ; the bone is 

 more laminiform in the O. tortus. 



Anogmius favirostkis sp. nov. 



The characters of the genus Anogmius Cope having up to the present 

 time rested upon but one species {A. aratus), it is satisfactory to be able 

 to confirm them by the study of new material. This, which was obtained in 

 Kansas by Mr. Sternberg, consists of the almost entire superior part of the 

 skulls of two individuals, one of them with thirteen vertebrae. 



The vertebrae, which undoubtedly belong to the skull, have no lateral 

 grooves, but the superior and inferior pairs of fossae are present. The 

 inferior fossae are separated by a plane interval on the anterior cen- 

 tra, which rapidly narrows posteriorly. The centra are not elongate nor 





