1894. 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



581 



Quadrato-jugal rudimentary and triangular; connected with the 

 quadrate only. Zygomatic arch absent. Scapula as in T. major. No 

 webs between the digits, and only three claws on the hind foot. 

 Phalanges in the forefoot, 2-3-3-l.'-l*; hind foot, 2-3-3-2-1. Maxill* 

 slightly notched. Cervicals and their processes relatively short. 



Carapace moderately oval, keeled, and slightly compressed. Ratio 

 of width of carapace to length in adults about 10 to 13. First pleural 

 plate similar to T. bauri. Ground color dark-brown or olive-yellow, 

 much mottled with yellow. 



Plastron oval. Ground color yellow, much mottled with brown. 



The Louisiana form seems to be a dwarf variety of this species and 

 is peculiar to Louisiana. They were first noticed by Agassiz who 

 states: "Had I not noticed a few larger specimens from the Osage 

 iiiver and from Georgia, I should not hesitate to consider them as a 

 distinct species." They are characterized by their relatively small size, 

 peculiar markings, and rather full development of the quadrato-jugal. 

 Some times the (juadrato-Jugal is sufficiently developed to come into 

 contact, if not uniting, with the jugal. These individuals are readily 

 distinguished by their small size, three toes, and general color. In color 

 they vary from pale yellow or dusky to dark brown, marked by small 

 radially distributed yellow spots, often only few in number. The fact 

 that they grade into larger forms of other localities prevents them from 

 being ranked as a separate species. 



Mississippi, Louisiana, Arkansas, Indian Territory, soutliei-n Mis- 

 souri and Kansas, and Texas. 



List of specimens. 



Collector. 



Collection. 



Locality. 



G. Kohn 

 ....do... 



...do 



....do 



...do 



Dr. O. P. Hay . 

 Jnliu.s Hurter 



....do 



Dr. Kennerly . 



Dr. E. Palmer.. 



No. 53, U. S. N. M 



No. 7345, U. S. N. M 



No. 303 (7174), Mus. Pliila. 



Acad. Sci. 

 No. 304 (7177), Mus. Phila. 



No. 305 (7192), Mus. Phila. 

 Acad. Sci. 



New Orleans, La. 



do. 



do. 

 Mandeville, La. 



do. 



do. 

 Shubuta, Miss. 

 St. Louis, Mo. 



do. 

 Fort Inge to San An- 

 tonio, Tex. 

 Wailes, Miss. 

 Mill Creek, Cliicka- 

 saw Nation, Ind. T. 

 Fort Arbuckle, Ind. 



T. 

 Fort Gibson, Ind. T. 



TERRAPENE ORNATA (A g a s s i z). 



185'!.— Cistudo ornata, Agassiz, Contributions to the Natural History of the United 

 States, I, p. 445, PI. in, figs. 12, 13 (type in Mus. Comp. Zool., Cambridge, 

 Mass.; locality of type, Upper Missouri, Iowa).— Cope, Bull. U. S. Nat. 

 Mus. 1, 1875, p. 53; Bull. U. S. Nat. Mus. 17, 1880, p. 13.— True in Yarrow, 

 Bull. U. S. Nat. Mus. 24, 1883, p. 37.— Garman, Bull. Essex lust., xvi, 1884, 

 p. 10. — BouLENGER, Catalogue of Chelouians in the British Museum, 1889, 

 p. 118.— H. Garman, Bull. 111. State Lab. Nat. Hist., iii, 1892, p. 220. 



\mi.—Terrapene ornata, Baur, Science, xvii, 1891, p. 191; Amer. Natural., 1893, p. 678. 



