590 E. B. BRANSON 



clavicle is very much rounded, instead of being decidedly angular, as it is in 

 Meloposaurus diagnosticus. 



The episternum is 43 cm long and ^o cm wide. 



The mandible is coarsely sculptured on the external face, and bears indica- 

 tions of two large teeth at the very front of the ramus, and behind these fifteen 

 small teeth. These seem to have been largely attached to the external wall of 

 the alveolus in a manner somewhat suggestive of the pleurodont dentition of an 

 iguana. 



Specimen from Trias five miles east of Tanners Crossing, Little 

 Colorado River, Arizona. 



This specimen is probably an Anaschisma, but only the finding 

 of such interclavicles with a skull of Anaschisma will settle that point 

 definitely. 



Dictyocephalus Leidy 



(No name) Emmons, 1856 (Geological Report of the Midland Counties of North 



Carolina, p. 347). 

 Dictyocephalus Leidy, 1856 ("Notice of Extinct Vertebrated Animals Discovered 



by Professor E. Emmons," Proceedings of the Academy of Natural Sciences 



of Philadelphia, p. 256; also American Journal of Science, 1857, Vol. XXIII, 



p. 272). 

 Dictyocephalus Emmons, 1857 (American Geology, Part VI, p. 59, Figs. 31 and 



3 2 )- 



Dictyocephalus Emmons, i860 (Manual of Geology, 2d ed., p. 184, Fig. 182). 



Dictyocephalus Cope, 1868 ("Synopsis of Extinct Batrachia of North America," 

 Proceedings of the Academy of Natural Sciences of Philadelphia, p. 221). 



Dictyocephalus Miall, 1875 ("On the Structure and Classification of the Laby- 

 rinthodonts," Report of the British Association for the Advancement of Science, 

 p. 185). 



Dictyocephalus Cope, 1875 ("Synopsis of the Vertebrata Whose Remains Have 

 Been Preserved in the Formations of North Carolina," Report of the Geo- 

 logical Survey of North Carolina, Appendix, B p. 32). 



Dictyocephalus Fritsch, 1879 (Fauna der Gaskohle und der Kalksteine der Perm- 

 formation Bohmens, Vol. I, p. 61). 



Dictyocephalus Zittel, 1890 (Handbuch der Palaeontologie, Vol. Ill, p. 408). 



Dictyocephalus von Huene (Uebersicht iiber der Reptilien der Trias, p. 68). 



Founded on the upper portion of a cranium discovered by Pro- 

 fessor Emmons in the coal fields of Chatham County, North Carolina. 

 Plates of the cranium covered with reticular ridges in a general 

 radiant manner. Parietals comparatively short, broader in front 

 than behind; parietal foramen near the center of the bones. Occipi- 



