354 Illinois State Laboratory of Natural History. 



12 (11). Posterior le^s and the pelvic bones lacking. Jaws 

 with horny plates instead of teeth. Teeth on 

 the roof of the mouth in two large patches. 



SlEENID^. 



Family PLEURODELID^. 



Branchial openings closed in adults, no tufts. Fingers 

 four; toes five. Palatine teeth in two longitudinal series borne 

 posteriorly on processes of the palatine bones, which project 

 backward beneath the parasphenoid. Eyelids present. Teeth 

 on maxillaries and premaxillaries. No parasphenoid teeth. 

 Tongue free at the sides. Parietals not embracing frontals. 

 Pterygoids and prefrontals present. Occipital condyles sessile. 

 Carpal and tarsal bones ossified. Ribs small. Vertebras 

 opisthocoeliau. 



DiEMYOTYLUS, RafiNESQUE. 



Rafinesque, Ann. Nat., 1820. 



Cope, Proc. Acad. Nat. Sci. Phila., 1859, XI., p 12fi. 



Smith (Notophthalmus), Tailed Amphibians, 1877, p. 103. 



Tongue small, free at the sides. Palatine teeth in two 

 longitudinal series which diverge slightly posteriorly. Pro- 

 cesses from the frontals and tympanic bones forming an arch 

 behind the orbit. The first and fifth toes rudimentary. Tail 

 strongly compressed. Skin above the eyes and on the jaws 

 with large mucous pores. 



Two species referable to this genus occur in the United 

 States. The following is the only one which occurs in the 

 Eastern and Middle States. It is the closest ally of the 

 European tritons which our fauna furnishes us. 



Diemyctylus miniatus, Raf. Newt, Eft, Evet, Red 

 Eft, Spotted Triton. 



Form miniatus. 



Trlturus miniatus, Raf. Ann. Nat., 1820. 



Notophthalmus miniatus, Baird, Jour. Acad. Nat. iSci. Phila., 2d 



Ser., 1849, I., p. 284. 

 Sdlamanclra symmetrica, De Kay, Nat. Hist. N. Y., I., Zool. III., 



Rept. and Amph., 1842, p. 73, pi. 15, fig. 33. 



