TWENTY-FIFTH ANNUAL REPORT 81 
House, both in the exhibition halls and the keepers’ passageways, 
were provided with high-power nitrogen lamps. The illumina- 
tion of the building during dark, stormy days, or at night for 
purposes of feeding, has been greatly improved. 
The scientific work of the Curator of Reptiles during the 
year has included the preparation of various articles for the 
Bulletin, the most important of these being a description of 
the recurrence of the seventeen-year “Locust” and numerous 
photographs showing incidents of this insect’s emergence in the 
northeastern portion of the United States. Material has also 
been filed, from numerous notes, as the basis for scientific articles 
dealing with the habits of hibernation and occurrence of poison- 
ous snakes in the eastern United States. Early in the year, the 
Curator began the preparation of motion pictures for exhibition 
at the Annual Meeting. These included careful portrayal of the 
rarer mammals, reptiles and amphibians which had arrived dur- 
ing 1920. 
The following are the more important purchases during the 
year: 1 regal python (about 20 feet in length) ; 2 black-tailed 
pythons (respectively 16 and 12 feet in length); 9 diamond 
pythons, 1 rock python, 1 anaconda, 1 boa constrictor, 4 Indian 
rat snakes, 6 European vipers, 6 Pacific rattlesnakes, 13 blue- 
tongued lizards, 9 Cunningham skinks, 3 Gila monsters, 12 
collared lizards, 6 iguanas, 11 spike-tailed lizards, 12 green liz- 
ards, 2 Ceylonese monitors, 3 African chameleons, 1 radiated tor- 
toise, 2 leopard tortoises, 1 hinge-backed tortoise, 2 side-necked 
turtles, 2 Muhlenberg turtles, 1 Indian crocodile, 1 Senegal 
crocodile, 20 smooth-clawed frogs and 10 axolotls. 
The most important addition to the collection in the Reptile 
House was the Australian lung fish, Ceratodus fosteri, which ar- 
rived on October 31, 1920. Another important addition was in 
the shape of three specimens of the rare and beautiful Florida 
tree toad, Hyla gratiosa. 
Director Beebe shipped a series of interesting reptiles from 
the Zoological Society’s Tropical Research Station in South 
America. Among them were two young anacondas, iguanas, tor- 
toises and turtles. 
There was only one loss of consequence in the reptile collec- 
tion during the entire year. This was a specimen of the Indian 
cobra, which has been on exhibition over twelve years. This 
