722 AMPHIBIA—SALAMANDRID&. 
AMBLYSTOMA MICROSTOMUM Cope. 
Small-Mouthed Salamander. 
Triton porphyriticus, (?) HOLBROOK. 
Color in alcohol brownish black, paler beneath ; plumbeous spots of indefinite outline 
scattered thickly and irregularly over the sides, sometimes wanting, at others licheni- 
form ; tail round or nearly so at the base, but becoming ensiform towards the end ; body 
slender ; length about thirteen times its greatest diameter ; head narrower than and not 
separable from the body ; projection of upper jaw not as great as that of the lower; 
dorsal furrow present, but not deeply indented; mucous pores of the head not different from 
those of the body ; lingual longitudinal furrow present; length at loss of brarichix, 2 
2-5 inches ; length, 4 inches; tail, 14 inches; body, 24 inches; head to cervical fold, .45 
inch; diameter of head, .31 inch. 
Habitat, Illinois, Missouri, Arkansas, and Ohio to Louisiana. 
This species very closely resembles Plethodon glutinosus, but is distin- 
guished from it by the arrangement of the teeth in a transverse unin- 
terrupted row, arched in front instead of being separated by a wide in. 
terval, and also by the tail being very much compressed laterally ; while. 
in P. glutinosus it is cylindrical, or only slightly compressed. Triton 
porphyriticus of DeKay is probably Plethedon glutinosus. 
AMBLYSTOMA XIPHIAS Cope. 
Long-Tailed Salamander. 
Color yellowish olive, brighter yellow beneath; sides and back with brown anasto- 
mosing or reticulating bands; head small; cheeks swollen; eyes rather small, but 
distinct; mandible projecting; outer nares nearer together than the inner; tongue 
large; vomerine teeth V-form, at an obtuse angle, interrupted along the median line 
Genus HEMIDACTYLIUM. Tschudi. 
Desmodactylus, DUMERIL and BIBRON. 
Vomerine teeth in two rows, one on each side behind the inner nares, sphenoidals 
also in two groups, separated from the former and each other; tongue oval, adherent 
in front; parietal bones osseus; premaxillaries two; fontanelle wanting; toes rudi- 
mentary, palmate at base, four in front and four behind. 
HEMIDACTYLIUM scuTATUM Schlegel. 
Four-toed Salamander. 
Salamandra fusca, GREEN, Jour. A. N. Science, Phil., 1818, page 357, not of Rafinesque. 
Salamandra scututa, SCHLEGEL. 
Salamandra melanostica, GIBBES. 
Desmodactylus melanosticus, DUMERIL and BIBRON. 
Hemidactylium scutatum, TSCHUDI, BAIRD, COPE, JORDAN. 
