30 COPEIA 



May 29 — Not much change in larvae from 

 May 27. 



31 ay 31 — I killed and preserved the large larva 

 A, and the recently transformed adult of May 28. 

 The gill stubs on A were very small and no longer 

 than their width. 



June 1 — B has lain out of water for two days. 

 The gill filaments are going. 



June 4 — B lying out of water all the time. Prac- 

 ticing bucco-pharyngeal respiration. Gill filaments 

 about gone. This specimen was then killed and pre- 

 served. 



It is thus apparent that Spelerpes ruber begins 

 to transform in May. The time of breeding is not 

 known to me and I can find no record of it. The 

 animals remain active all winter in springs. At the 

 time of transformation they are probably well over a 

 year old, as two lots can be distinguished, 80-110 mm. 

 long, and 50-60 mm. long. This would seem to make 

 the duration of the larval period about two years, and 

 would also point to a definite breeding period, prob- 

 ably in the spring and summer. Of course these last 

 statements are simply conjectures. 



The question of Siren operculata Beauvois arises 

 here. I am of the opinion that before so well estab- 

 lished a name as Spelerpes ruber be changed, it should 

 be shown beyond the shadow of a doubt that the larva 

 on which Beauvois founded his operculata is identical 

 with the larva of ruber. 



E. R. Dunn, 

 Have?' ford, Pa. 



XOTES OX AMBLYSTOMA TIGRIXUM 



AT FLAGSTAFF, ARIZOXA. 



During the month of May, 1913, the writer had 

 good opportunities to study this salamander at an al- 

 titude of a little under 7,000 feet. 



