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University of California Publications in Zoology [Vol. 27 
seen in the pools in addition to those out on land. The animals in the 
water were obviously hampered in their swimming; instead of pur- 
suing straight courses they often circled about. 
Crosswhite and Wyman (1920, p. 78) have figured an adult of 
this toad (presumably from southern California) which had a super- 
numerary leg attached medially to the posterior end of the body. 
This limb bore two well-formed feet, reversed right for left. The 
possession of this abnormal development was evidently not a particu- 
lar hindrance to the animal. 
The breeding season of halophilus occupies a long period. In 
southern California, Camp (MS) says that it breeds from January 
to June. In the central part of the State the months of March, April, 
and May witness most of the spawning. At the higher altitudes in 
the mountains breeding is probably delayed until June or July, as 
with canorus. The following table gives all of the exact information 
which the writer has been able to gather upon the spawning activities 
of this species. 
Spawning Data for Bufo boreas halophilus in California 
Locality 
Date 
Arroyo Seco, Los Angeles at Avenue 
66 
Jan. 28, 1923 
Stockton, San Joaquin Co 
Mar. 12, 1923 
East Oakland, Alameda Co 
Mar. 15, 1914 
San Francisco Bay region 
Mar. 28, 1920 
East of Buckman Springs, San 
Diego Co 
Mar. 29, 1923 
Sierra Madre, Los Angeles Co 
Apr. 4, 1923 
Altadena, Los Angeles Co 
Apr. 8, 1923 
Arroyo Seco, Los Angeles 
Apr. 15, 1923 
Oakland, Alameda Co 
Apr. 16, 1912 
Lafayette, Contra Costa Co 
Apr. 19, 1922 
4 miles west of Dixon, Solano Co 
May 1, 1924 
Lafayette, Contra Costa Co 
May 7, 1921 
Lafayette, Contra Costa Co 
May 14, 1921 
Davis, Yolo Co 
May 21, 1924 
Lafayette, Contra Costa Co 
May 22, 1921 
Manor, Marin Co 
July 6, 1919 
Nature of material 
Eggs (L. H. Miller, MS.) 
Laying in progress; some young 
larvae 
Adults taken to laboratory laid 
during night 
Toads collected this date laid 
during night (P. E. Smith, 
MS.) 
Freshly laid eggs and early 
embryos 
Embryos and advanced larvae 
Eggs nearly ready to hatch and 
others just laid 
Larvae 10 to 32 mm. long 
Paired adults taken to labora- 
tory spawned during night 
Laying in progress 
Laying in progress 
Larvae reported 
Larvae of several sizes, some 
recently hatched 
Large larvae and one trans- 
formed toad 
One lot of freshly laid eggs 
Many young toads just trans- 
formed 
