. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. THE BIOLOGY OF THE RED-BACKED SALAMANDER. 343 Miss Towle found that Plethodon cinereus had the regenerative power also in the limbs. Of Plethodon oregonensis, Miss Hubbard says it practices "autotomy only as a last desperate resource, and but in one region (directly behind the anus)." But when in two or three instances, the tail of a red-back has been held by forceps, the tail has come off very easily and in no particular region. Those found wild with incomplete tails appeared to have been broken in no particular j
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. THE BIOLOGY OF THE RED-BACKED SALAMANDER. 343 Miss Towle found that Plethodon cinereus had the regenerative power also in the limbs. Of Plethodon oregonensis, Miss Hubbard says it practices "autotomy only as a last desperate resource, and but in one region (directly behind the anus)." But when in two or three instances, the tail of a red-back has been held by forceps, the tail has come off very easily and in no particular region. Those found wild with incomplete tails appeared to have been broken in no particular joint. This salamander has not been observed thus far to snap or bite for protection. INTELLIGENCE. The red-backs are easily tamed, and will learn to eat food when offered on a splint. They object to being handled even after they have been in captivity a long time, probably because of the unpleasant warmth and dryness of the Cluster of eggs attached to a stone. (Two thirds natural size.) (Photographed by Dr. Miller.) They appear to be very quick of hearing. Abbott, among other statements about the salamanders, mentions "their quickness of ; When undisturbed in their haunts, a whistle, clap of the hands, or a speaking voice sends them away. Abbott is of the impression that the salamanders give evidence of greater intelligence than the toads or frogs. His efforts to prove them possessed of cunning were not successful. REPRODUCTIVE HABITS. Baird writes of the genus Plethodon, "The eggs are deposited in packages or aggregations, in moist situations, under stones. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl
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