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64 NORTH AMERICAN FEVER TICK AND OTHER SPECIES. 
many as 5 males were located very close together without any 
females, and other cases on various parts in which both sexes were 
found together. This species is very firmly attached to the host. 
While Rhipicephalus sp. can be removed easily A. maculatum can not 
be removed without evident pain. 
Attempts were made to rear the species upon dogs. On October 
11 seed ticks were placed upon two small dogs. Eight were found 
attached on the 15th. For the first five or six days after attach- 
ment the seed ticks increase slowly in size, remaining of a light color; 
then in a few hours they seem suddenly to engorge with blood. 
The color of the body becomes’ purplish and afterwards still darker. 
On the fifth day from placing seed ticks on the dogs 8 were found 
still light in color and 1 dark. On the sixth day 2 were taken that 
had just detached themselves, leaving 2 dark and 4 light on the host. 
On the seventh day 3 were found to have dropped during the night; 
2 dropped and the remaining 1 engorged during the day. On Octo- 
ber 19 the eighth tick was found to have dropped during the night, 
making a minimum period of 5 days and a maximum period of 8 days 
for attachment of larval stage. 
Several of the engorged larve were kept on moist sand to molt, 
but shriveled and died. 
The incubation period for eggs deposited from the Ist to the 11th 
of September varied from 26 to 31 days. Seed ticks from these eggs 
were still alive on March 1, 1907. 
LAND TURTLE TICK. 
(Amblyomma tuberculatum Marx. ) 
This species was described by Marx in 1894 from specimens col- 
lected by Hubbard at Crescent City, Fla., from the Florida land tur- 
tle, Gopherus (Xerobates) polyphemus. Neumann reports a male 
specimen from Cuba. 
We have received 3 specimens collected in February, 1907, by Dr. 
A.W. Morrill in Florida on a land turtle (Gopherus sp.), presumably 
the same as the host of the original specimens. 
BIBLIOGRAPHY. 
No attempt has been made to make this bibliography complete. 
In Section A, relating to the cattle tick of North America and the 
problems caused ‘by it, the literature is scattered through many 
experiment station bulletins, veterinary journals, bulletins of the 
Department of Agriculture, and other publications. Only the more 
important are included. In Section B, relating to foreign disease- 
