CHECKLIST OF THE AMPHIBIA OF MEXICO 17 



3. Skin of head smooth or with only a faint trace of pitting; the upper ex- 



tension of hyoid (epibranchial) reaches level of arm insertion; usually a 

 single tooth piercing lip; body and tail more or less compressed. dubitus (p. 17) 

 Skin of head usually more or less pitted; upper extension of hyoid (epi- 

 branchial) usually extending to at least posterior level of arm or farther; 

 body not compressed, but rounded or somewhat flattened; tail more or 

 less cylindrical at base 4 



4. Larger; maximum snout-to-vent length 32 mm.; head and body strongly 



pitted; three premaxillary teeth pierce lip; nostril larger; about 35 

 caudal grooves in full-grown specimen; found above ground under bark 



of rotting logs narisovalis (p, 18) 



Smaller; maximum snout-to-vent length about 26 mm.; head and body 

 usually dimly (rarely distinctly) pitted; usually one, rarely two, pre- 

 maxillary teeth pierce lip; nostril proportionally smaller; about 40 

 caudal grooves; dorsum lighter; found under rocks or in cavities in 

 clay, animal burrows, etc ..troglodytes (p. 18) 



THORIUS PULMONARIS Taylor 



Thorius pulmonaris Taylok, Univ. Kansas Sci. Bull., vol. 26, 1939 (1940), pp. 

 411-414, text figs, a, 4. 



Type.— EUT-UMS No. 16684. 



Type locality. — Cerro San Felipe, about 12 kilometers northeast of 

 Oaxaca, Oaxaca, Mexico. 



Range. — Known only from the vicinity of the type locality; Cerro 

 San Luis. 



THORIUS PENNATULUS Cope 



Thorius pennatribus [Cope], Amer. Nat., 1869, p. 222 (typographical error for 



T. pennatulus [nomen nudum], see Cope, type description). 

 Thorius pennatvhis Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 21, 1869, pp. 



111-112.— Taylor, Univ. Kansas Sci. BuU., vol. 27, 1941, pp. 105-107, pi. 3, 



fig. 5. 

 Spelerpes minimus Wiedersheim (Spengel?), Morph. Jahrb., vol. 3, 1877, p. 



544 ("Vera Cruz"; probably no types in existence). 



r?/;)e.— Origmally U. S. N. M. No. 6341, now lost. Neotype, 

 U. S. N. M. No. 111017, Cuautlapan (near Orizaba),Veracruz. 



Type locality. — "Orizava," Veracruz, Mexico. 



Range.— Known from low mountains (3,000 feet more or less) in the 

 region about and below Orizaba in Veracruz. Recorded from Orizaba 

 and Cuautlapan, Veracruz. 



THORIUS DUBITUS Taylor 



Thorius pennatulus Taylor (nee Cope), Univ. Kansas Sci. Bull., vol. 26, 1940, 



pp. 414-416 (part), pi. 47, fig. B. 

 Thoriiis dubitus Taylor, Univ. Kansas Sci. BuU., vol. 27, 1941, pp. 108-110, 



pi. 3, fig. 3. 



Type.— EUT^KMS No. 17751. 



Type locality.— Two miles south of Acultzingo, Veracruz, Mexico. 



