1854.] 187 



3. Teleopus* Lee. Terrestris. Sterno solido, sutura laterali ossea, alis 

 scutellis addititiis duobus ; scutellis bracbialibus luxatis et quasi inter marginem 

 pectoralis inferiorem el; abdominalis superiorerri propulsis, unguibus 5-5. Transi- 

 tum facit ad familiam quartam. 



4. Lutremys Gray. Terrestris. Sterno diviso antice mobili, sutura laterali 

 ligamentosa, alarum marginibus inflexis. Clstudo Auct. 



5. fCisruDo Fleming. Sterno diviso antice et postice mobili sutura laterali 

 ligamentosa, alis nullis unguibus 4-5 vel 4-3. Terrapene Merr., &c, Pyxidemys 

 Fitz., Onychotria Gray, Emys Schw. 



0. Sternum scutis 13 tectum. 



6. Chelys Dum. Labiis carneis. Matamata Merr. 



7. Chelodina. Labiis sicut, in omnibus sequentibus, corneis. Alis scutellis 

 addititiis nullis, scuto gulari intermedio luxato et inter scuta brachialia et pec- 

 toralia, infraque eularia duo reliqua posito ; unguibus 4-4. Clielidonia Bon. 

 Hydromedusa Wagl., Emys Schw., Hydraspis Bell et Gray. 



8. SterxNoth^rus Bell. Sterno diviso antice mobili. Alis scutellis additi- 

 tiis nullis, scuto nuchali nullo, marginalibus 24. Emys Schw., Terrapene Merr., 

 Pelusios Wagl. 



9. Pentonyx Dum. Sterno solido, alis scutello addititio posteriore : scuto 

 nuchali nullo, marginalibus 24 ; unguibus 5-5. Emys Schw., Pelomedusa Wagl., 

 Hydrastis Gray. 



10. Platemys. Alis scutello addititio parvo anteriore. Testa scuto nuchali, 

 marginalibus ideo 25. Rhinemys Wagl., Phrynops eiusdem, Emys Schw., Hy- 

 dras pis Gray. 



11. Podocnemis Wagl. Alis sine scutello addititio. Testa scuto nuchali 

 magno lato. Peltueephalus Dum., Emys Spix, Hydraspis Gray. 



* Teleopus luxatus. Shell very dark brown, almost black, somewhat flattened 

 along the vertebral line, declivous behind, a little expanded in front, nearly per- 

 pendicular on the sides. First vertebral plate six-sided, of the form of a heraldic 

 shield, with the point truncate, the posterior side recurved, 2d, 3d and 4th six- 

 sided, the lateral faces half the length of the anterior or posterior sides; 5th four- 

 sided, the anterior face recurved, the posterior incurved, very wide with four 

 facets. First lateral three-sided, the anterior side with four facets : the rest 

 four-sided, superior and inferior sides angled, the inferior side of the third with 

 three facets, the superior side of the fourth oblique backwards, the inferior 

 curved. Marginals, nuchal oblong rectangular, the rest nearly square, the 2d, 

 6th, 7th, 9th and llth superiorly angled. Caudals two. Sternum emarginate at 

 both ends, posteriorly more deeply and widely ; gulars triangular, blunt and some- 

 what rounded at the point ; pectorals irregularly four-sided, the posterior lateral 

 angle cut off and emarginate by the displaced brachial ; this last is of an oblong 

 shape, the superior face emarginate, the inferior straight, and the two lateral 

 rounded ; abdominals very wide, irregularly eight-sided, the posterior exterior 

 side short and emarginate ; supplementary scutellae small ; femorals four-sided, 

 the exterior lateral face oblique inwardly ; anals right angled triangular, the 

 hypothenuse curved. Upper jaw with three rows of serrate teeth, the lower 

 with two, the outer ones the finest. Toes and claws 5-5, fore claws long and 

 rather sharp ; hind feet clavate, claws nearly globular, the innermost one wide 

 and flat, the edge rather sharp. Length 17 in., width 11.5, height 6.5. 



Inhabits Java; 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. 



f Etiamsi in hujus generis animalibus adultis alia sterni iunctura cum testa non 

 apparet praeter ligamentosa sine alis, tamen pullorum sternum evidentur alis est 

 instructum, quae testa scutellis quatuor seiunguntur. Nares subtubulosee sunt, 

 aliis rebus ad Emydes respiciunt. Cistudo clausa omnino et praecipue terrestris. 

 Dubito revera num natare potest. Pulli in aqua iacti semper merguntur. Haec 

 natura terrestris cum cute squammosa apte ad Testudines iungit. 



