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I am not aware that any observations have been made with reference to the presence or absence of Culex fasciatus in high altitudes, but the inference that it is not to be found in such localities as the City of Mexico seems justified by the established facts already referred to.
The question whether yellow fever may be transmitted by any other species of mosquito than Culex fasciatus has not been determined.
What success may attend their efforts remains to be seen, but at all events the fundamental facts have been demonstrated that this germ is present in the blood and that the disease is transmitted by a certain species of mosquito Culex fasciatus.
It now reposes, as Platurus fasciatus Daud., in the Zoological Museum of the Berlin University. The dishes were stolen from me at Manila. In Catubig trinkets of gold have been found, but they have been converted into modern articles of adornment.
If, therefore, the streets of a city are unpaved and ungraded and there are open spaces where water may accumulate in pools, as well as open cesspools to serve as breeding places for Culex fasciatus, the city will present conditions more favorable for the propagation of yellow fever than it would if well paved and drained and sewered.
It now occurs quite commonly on the rats in the San Francisco Bay region and is occasionally found there on man also. In the United States, Great Britain and other temperate regions another larger species, Ceratophyllus fasciatus is by far the most common flea found on rats, and is commonly known as the rat flea.
There may still remain in your vicinity some sequestered spots, congenial to these and other rarities, which may reward the botanist and the entomologist who will search them carefully. Perhaps you may find there the pretty coccinella-shaped, silver-margined Omophron, or the still rarer Panagoeus fasciatus, of which I once took two specimens on Wellington's Hill, but have not seen it since."
Scops spilocephalus. The spotted Himalayan scops owl. Gyps himalayensis. The Himalayan griffon. Pseudogyps bengalensis. The white-backed vulture. Aquila helica. The imperial eagle. Hieraëtus fasciatus. Bonelli's eagle. Ictinaëtus malayensis. The black eagle. This is easily recognised by its dark, almost black, plumage. Spilornis cheela. The crested serpent eagle. Milvus govinda.
It must be supposed that Culex fasciatus is only found where yellow fever prevails. The propagation of the disease depends upon the introduction of an infected individual to a locality where this mosquito is found, at a season of the year when it is active.
The common monkey, Macacus cynomolgus, which is found in all the Indo-Malayan islands, and has spread from Java through Bali and Lombock to Timor. This species is very frequent on the banks of rivers, and may have been conveyed from island to island on trees carried down by hoods. 2. Paradoxurus fasciatus; a civet cat, very common over a large part of the Archipelago. 3.
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