Image from page 278 of "Introduction to zoology; a guide to the study of animals, for the use of secondary schools;" (1900) (14781918621)

Identifier: introductiontozo00dave
Title: Introduction to zoology; a guide to the study of animals, for the use of secondary schools;
Year: 1900 (1900s)
Authors: Davenport, Charles Benedict, 1866-1944 Davenport, Gertrude Anna Crotty, 1866-
Subjects: Zoology
Publisher: New York, Macmillan company London, Macmillian and co., ltd.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library



Text Appearing Before Image:
FIG. 24o. --The larva of Ambli/stowa tif/riiium, the Axolotl stage of the tiger salamander. From Mivart. THE NEWT AND ITS ALLIES 259 attached to sticks at or near the surface of the water.The larvae of the more southern species often reach a sizeconsiderably larger than the adult, and breed before thegills are absorbed. In a Mexican species the larvalstate is never transcended. The larva of Amblystoma(Fig. 243) was formerly described, indeed, as a distinctspecies. The Plethodontidae a and Desmognathidae2 include a num-ber of small Urodeles, having a close general resemblance
Text Appearing After Image:
Fi<;. 244. — Plethodon, the red-backed salamander. Slightly reduced. Photo. of living animal resting on a leaf. and similar habits. Plethodon, of the eastern UnitedStates, is lead-colored above, very often with a broad,red dorsal band (Fig. 244). It is found under logs,and is very active. Spelerpes3 is lemon-yellow and whitebelow, and Desmognathus is brown above, with gray or s, abundance ; odo^s, 656fTos, tooth. 2 5e<r/x6s, bond ; jaw. 3 (TTTTjAcuoj/, cavern ; epir-rjs, a crawler. 260 ZOOLOGY purplish spots on the sides. Both Spelerpes and Desmo-gnathus live in and about running brooks, under stonesand fallen logs. Their eggs are attached to the undersurface of submerged stones. The adults are easy to keepin confinement in a moist fernery. They may be obtainedout of doors all the year round, excepting during the time ofdeep snow. There are four species of Spelerpes and threespecies of Desmognathus in the northern United States. Metamorphosis. — As we have seen, all Amphibia