ho. 1655. VOTES <>\ VERTEBRATES FROM INDIANA II MIX. 551 



mately the form of a sphere with each pole truncated. Most of the 

 masses were pierced near the center by a weed, the petiole of a Leaf, 

 or a small stick. Often several masses were crowded upon the same 

 stick, which was usually so placed that it formed some support to 

 the eggs, although it did not always hold them fife from the bottom. 

 There were ahont 270 of these egg masses in the one small pond. 

 The average number of e.ir.irs in each lot was not less than 20, and 

 probably exceeded that number, the total number being, therefore, 

 five or six thousand. 



Some of the eggs were put in aquaria in the house. They began 

 hatching March 1± Growth was slow, the young apparently feeding 

 to some extent on the gelatinous substance which had enveloped the 

 eggs. When first hatched the young were ahont L2 mm. in length. 

 On March :'><>. eighteen days after hatching, a length of 15.5 mm. had 

 been attained. 



At this period the principal food of the larval salamanders seems 

 to be the larva> of aquatic diptera. These could not he obtained in 

 large quantity, and the slow growth of the young - salamanders 

 may he accounted for by lack of sufficient food, althongh mosquito 

 larvae were supplied iii small numbers and were greedily eaten when 

 not too large and active. Young salamanders that were" taken from 

 the pond at this time (March 30) were much larger, being 20 to 25 

 mm. in length, with heavier bodies and broader heads. Their gen- 

 eral color is greenish; blackish dots of pigment are scattered over 

 the entire surface of the animal. ( )n the body these are collected 

 into hands extending across the hack and down on the sides, the 

 "lin" being also edged with the darker color. The number and size 

 of the pigment specks do not increase with the growth of the animal, 

 which, therefore, becomes lighter in color with increase in size, 

 except the ('^\<j;o of the "fin." where the pigment accumulates and 

 becomes more dense. 



Young taken from the pond on May 2 measured from 30 to -".7 nun. 

 At this stage the dark cross bands of pigment have disappeared and 

 the pigment was distributed in irregular blotches. There is an indis- 

 tinct longitudinal line of pale, olive yellow about the level of the 

 spinal column, ami below this a line of denser pigment. Larvae that 

 had attained a length of 12 to 51 nun. on May II have a lateral 

 row of pale, golden-yellow spots varying in number in different 

 individuals. 



On June If an individual was taken that was of the same length 

 as those of a month previous, but which had a much greater bulk. 

 At this stage the gills and "fin" have been largely resorbed and the 

 animal voluntarily left the water when placed in a -hallow aquarium, 

 although it had been seined from the bottom of the pond. The 



