CATALOGUE OF SHIELD REPTILES. 



APPENDIX. 



Page 3, add — 



Mr. John Leconte proposes a new arrangement of the 

 Order into four great families. He observes : " I owe this 

 arrangement in a great degree to the suggestions of my 

 son." 



Fam. I. Pedes penniformes. Sternum esse episternali 

 postice producto. 1. Chelonia. 2. Sphargis. 



Fam. II. Pedes compressi, ungulati. Sternum scuto 

 singulo (abdominali) alato, alarum marginibus non inflexis. 



A. Sternum osse episternali postice producto. l.Chelydra. 



2. Stma-ofi/pus. 3. Trionyx. 4. Emyda. 



B. Sternum plus minus uni- vel bivalve ; osse episternali 



maximo entosternali obsolete (in pullis rudimentali) 

 alis a scuto abdomiuah solum projectis. 1. Kino- 

 sternon. 



Fam. III. Pedes ungulati, plerumque compressi. Ster- 

 num scutis duobus alatis (pectorali abdominalique) alarum 

 marginibus, excepta Cistudinse fortiter inflexis scutis cau- 

 dalibus duobus distinctis. 



a. Sternum scutis 11 s. 12 tectum. Ungulus 5*5, 4 • 5, 

 4 • 4 vel 4 ■ 3. 1 . Emys. 2. Platysternon. 3. Tele- 

 ojrits. 4. Lutremys. 5. Cistudo. 



/3. Sternum scutis 13 tectum. 6. Chelys. 7 . Chelodina. 

 8. Sternofhcenis. 9. Pentonyx. 10. Plutemys. 11. 

 Podocnemis. 



Fam. IV. Terrestres. Corpus scutatum. Sternum ala- 

 tum, scuto laterah osseo, alarum marginibus fortiter in- 

 flexis. Pedes clavati, ungulati. Scutum caudale uunquam 

 divisum vel stria superiore perpendiculari fortiter impressa 

 quam in partes duas secari videtur. 1 . Testudo. 2. Pyxis. 

 3. Homopus. 4. Kinixys. — Proc. Acad. Nat. Set. Pkilad. 

 vii. 1854. 



1. Manouria fusca (p. 15), add — 



Teleopus luxatus, Leconte, Proc. Acad. Nat. Sci. Philad. 

 vii. 187, Oct. 1854. 



" Upper jaw with three rows of serrated teeth ; the 

 lower with two, the outer one the finest. Toes and claws 

 5 • 5 ; fore claws long and rather sharp ; hind feet clavate. 



Claws nearly globular, the innermost one vride and flat, the 

 edge rather sharp. 



" Inhabits Java ; and must from its shape be terrestrial 

 in its habits. 



" It possesses a strange mixture of the characters of this 

 family with those of the next." — Leconte, I. c. 187. 



Geoclemys Seba (p. 18). 



Dr. Kelaart believes that Geoclemys Seba (p. 18) is the 

 young of Emys trijuga (p. 20), the difference in the form of 

 the shell and the spotting on the head depending on the 

 age of the specimens. I have never seen the young E. tri- 

 juga, the adult G. Seba, nor any specimens in an inter- 

 mediate state of growth. I may observe that the fore feet 

 of Emys trijuga show its affinity to the genus Geoclemys, 

 though the skull is that of an aquatic Emys. 



16. Emys Holbrookii (p. 25), add — 



a. Adult (in spirits). North America ; Mississippi. Mr. 

 Brandt's Collection. 



The lower jaw rather flattened. 



To doubtful North American Emydes (p. 28), add — 



24*. Emys nigra. 



Emys nigra, Hallowell, Proc. Acad. Nat. Sci. Philad. vii. 

 96 (1854). 



" Shell oblong ovate, slightly compressed at the sides and 

 emarginate, but not distinctly serrated posteriorly ; latero- 

 posterior margins of carapace everted ; nuchal plate narrow, 

 truncate anteriorly, broader posteriorly ; 24 marginal plates, 

 the two posterior more or less quadrilateral, the two adjoin- 

 ing pentagonal. Colour blackish above, the upper part of 

 the head and neck presenting numerous very small yellow 

 spots upon a black ground ; anterior extremities with a 

 tinge of yellow ; under jaw and throat yellow, with dark- 

 coloured markings ; plastron yellow in the middle, with 

 large blotches of black and dark brown at the sides and 



