June, 1906.] KNAB : GOELDl's " OS MoSQUITOS NO PARA." 59 



the plates. It alights leisurely and without ceremony upon the face 

 and hands, and then bites painfully. It is of such a voracious disposi- 

 tion that it can easily be crushed without its attempting to escape. 

 Of the beautiful Sabeihes, with metallic colors and plumed tibia?, three 

 species occur. They are diurnal forest mosquitoes and are sometimes 

 common enough to become troublesome. They bite ferociously and 

 leave a relatively intense inflammation, evidently due to the large dose 

 of poison injected. 



Of especial interest is the figure on Plate V, showing the attitude of 

 Sabethes longipes in flight. The position of the hind legs, raised over 

 the back and bent well forward, is characteristic of the entire subfam- 

 ily Sabethinoz — at least it holds good for the species of a number of 

 genera that the reviewer has had opportunity to observe in nature. 

 Those who have seen living specimens of Wyeomyia smithii, the only 

 known representative of the group in the United States, will recall this 

 very striking attitude, which has been described by Dr. J. B. Smith 

 on p. 343 of his Report on the Mosquitoes of New Jersey (1904). 



Turning now more particularly to the economic aspect of his sub- 

 ject, the writer states that four species are the most important in Para, 

 not only as physical torturers and destroyers of peace, but as a menace 

 to health. Three of these have taken a firm footing within the city in 

 the last few years and relieve each other in their daily attacks inside 

 the house, greatly injuring the credit and reputation of Para as a 

 habitable tropical city. The fourth species holds the outskirts and 

 vicinity and constantly threatens human existence in the swampy 

 regions of the interior. Branded by modern science as the vehicle 

 and transmitter of malarial fevers it constitutes a serious obstacle to the 

 progress of the country and is directly guilty of serious injury to public 

 prosperity. The mosquito last alluded to is Anopheles represented by 

 A. albipes. The fearful abundance of this species at Macapa and in 

 the region bordering Guiana, and coincident with this an epidemic 

 of malaria, was observed upon two museum expeditions. The author 

 convinced himself of the correctness of the popular statement that 

 this mosquito has a strong predilection for forests of siriiiba (Avicen- 

 nia), and so numerous are they there that, even in passing through such 

 woods in the daytime, the face and hands soon become black with them. 



The second of the four above-mentioned important species is 

 Stegomyia fasciata. The description of the insect, with an account of 

 its distribution and its role in yellow fever, is followed by observations 



