Hurter — Herpetology of Missouri. 73 



Color. — Brownish grey or blackish, paler beneath, with numerous 

 grayish white spots on the sides and sometimes also on the belly.- 

 Some with lichen-like spots on the sides. 



Size. — Total length 170 mm.; from tip of snout to posterior end of 

 anal slit 82 mm.; tail beyond the latter point 88 mm. 



This species bears a close resemblance to Plethodon glutinosus, 

 from which the generic peculiarities, the longer digits, etc., readily 

 distinguish it. The bluish spots too are much less sharply defined 

 and duller, less silvery, and do not occur on the back in nearly as 

 great numbers as in P. glutinosus. From A. jejfersonianum it can 

 readily be distinguished by the projecting lower jaw; much smaller 

 and more arched head, greater number of costal furrows, more evi- 

 dent spots on the sides, etc., beside the important peculiarities of 

 tongue and teeth. (Cope.) 



Habitat, — This species is recorded from Ohio to South 

 Carolina, west to eastern Kansas and Louisiana. It has 

 also been brought from Hudson Bay. In Missouri it is 

 sometimes very common in suitable localities. I can 

 record it from the following counties : — St. Louis, Jeffer- 

 son, Butler, St. Charles, Stoddard, and Montgomery, in 

 Missouri, and St. Clair in Illinois. 



Habits. — The Small-mouthed Salamander spends the 

 winter months in and about stagnant pools and sloughs. 

 In February it may be seen under the thin ice crusts. 

 March 20th I caught a number of them in a slough under 

 logs, where they seemed to come out of crayfish holes, 

 and tried to escape into them again. They feed on earth- 

 worms. 0. P. Hay in his report on the Batrachians of 

 Indiana gives a fine life history of this species. 



Dates of capture. — March 17, 25 ; April 8, 15, 28 ; May 

 24; October 26. 



6. Ambystoma tigrinum Green. Tiger Salamander. 



Amhlystoyna tigrinum, Salamandra tigrina, Salamandra lurida, Triton 

 tigrinus, Triton ingens, Salamandra ingens, Ambystoma ingens, 

 Amhystoma episcopus, Am'bystoma maculatum, Amhystoma pro- 

 serpine, Ambystoma mavortia, Ambystoma mavortium, Ambystoma 

 calif orniense, Ambystoma fasciatum, Ambystoma nebulosum, 

 Camarataxis maculata, Amblystoma obscurum, Siredon lichenoides, 

 Siredon gracilis, Desmiostoma maculatum, Siredon pisciformis, 

 Siredon tigrinus, Axolotl. 



