334 



PHYSICAL HISTORY OF MAN. 



multiplied at Honolulu ; and during our visit, it made its first ap- 

 pearance on Maui. 



The house scorpion, likewise abounds at Honolulu ; and its introduc- 

 tion was equally attributed to vessels from Mazatlan. The other 

 Polynesian groups, remain free from the above two pests. 



The natives of the Hawaiian Islands, attributed the introduction of 

 the mosqiiito to the same quarter ; and we obtained evidence of the 

 possibility of such an occurrence, in the larva continuing on ship- 

 board for many days after we left Honolulu. One or more native 

 species of mosquito, were observed at the other Polynesian groups. 



In the following list of the plants, I have omitted those introduced 

 direct from Europe into Australia and New Zealand: and in other 

 respects, the enumeration, is by no means complete : 

 Anona squamosa, cultivated by the missionaries, at Taheiti, Samoa, 



and Tongataboo. It was also seen at Sydney : where, however, it 



had not produced fruit. 

 Brassica rapa, the turnip, naturalized at Taheiti, at Tongataboo, at 



the Feejee Islands, and in New Zealand. It was seen under culti- 

 vation, in Australia, and in Peru. 

 Brassica oleracea, the cabbage, naturalized at the Hawaiian Islands, 



at Taheiti, at Tongataboo, and at New Zealand : and at the latter 



place, it grows tall and suffruticose, with scattered coriaceous 



leaves, as if partaking of the surrounding perennial vegetation. 



The cabbage was found by Dr. Holmes at the Auckland Islands. 



And it was also seen naturalized, in Peru, and in Australia. 

 Senebiera didyma, a weed in the outskirts of the Hawaiian towns; and 



probably introduced by the way of Mexico. 

 Cleome pentaphylla, a weed at Taheiti ; and probably derived from 



Tropical America. 

 Cleome spinosa, a weed at the Hawaiian Islands; and likewise, in all 



probability, derived from Tropical America. 

 Argemone Mexicana, naturalized at the Hawaiian Islands. 

 Oxalis Dieppe, a weed from the Mexican coast, naturalized at Hilo, on 



Hawaii. 



Gossypium herbaceum, naturalized at the Hawaiian Islands. 



JJrena lobata, already noticed, as of aboriginal introduction in Poly- 

 nesia. — A species, perhaps the same, has become a weed in the 

 environs of Rio Janeiro. 



