Amphibia of Jefferson County, Mo. 187 
Ambystoma tigrinum (GrEEN)—Tiger salamanders, although 
well distributed 4 in Jefferson County, are not commonly taken. They 
may occasionally be found sharing the same cover with both 4 
maculatum in the uplands and A. texanum in the lowlands. Adults 
are occasionally unearthed in plowing. Due to its habit of wander- 
ing and falling into pits around dwellings, this is perhaps our best 
own salamander. We have collected them at Kimmswick, Danby, 
Sulphur Springs, near Barnhart and Pevely. 
Plethodon cinereus (GREEN)—From point of numbers the red- 
backed salamander is perhaps the most common in this county, 
mens show a total length varying from 64 to 99 mm. Three have 
injured tails which are partially regenerated. These average 68.4 
mm. in length, with an average of 2.73 mm. for the regenerated 
tip. The seven perfect specimens have an average total length of 
county. Large numbers can be found near Festus and specimens 
have been ray near Kimmswick and Goldman where they are 
fairly abundan 
Plethodon Aeon (GREEN) —The slimy salamander is 
moderately common and we have taken it at peers en 
pe Festus, Barnhart, and Antonio. It occ most frequently 
e base of rocky glades and wooded, bv "pillsides in fairly 
au soil with southern exposure. In the summer months it is often 
found with the preceding species and it has been observed in caves. 
Specimens taken at Goldman in November, 1930, prior to the winter. 
hi : 
an t 
are utilized as storehouses for foo ed during the period of 
ibernation. They seem to have little resistance when subjected 
to extremely wet ata e specimen, washed in a cold sprin: 
stream, died a few hours later; the temperature of the water may 
have been a contributing factor in the death. Another instance re- 
sulted in a similar fate: two specimens parse with young Amby- 
stoma texanum were shaltebed beneath a piece of moss which was 
moistened to a state of sogginess. Upon investigation later it was 
found that the slimy salamanders were drowned, while the Am- 
bystoma young seanied to have suffered no ill effects. 
Eurycea longicauda (GREEN)—The long-tailed salamander is 
Lcaty common in shaded locations beneath rocks and logs in and 
