THE CANADIA.!^ ENTOMOLOGIST. 367 



for both of these insects is fumigation with bisulphide of carbon. The 

 mo'^t convenient way to fumigate is to place the seed in an ordinary coal- 

 oil barrel, and pour on to it one ounce of the bisulphide of carbon for 

 every loo pounds o' grain, then close the barrel tightly, first with a wet 

 canvas or cloth, and on the top of this boards, which should be left 

 undisturbed for at least two davs. 



MOSQUITO NOTES.— No. 5. 



BY C. S. LUDI.OW, M. SC, 

 Laboratory of the Office of the Surg-eon-General, L'. S. Army, Washington, D. C. 



From the Island of Mindanao, P. I., comes a very pretty mosquito. 



Toxorhy?ichites argenteotarsis, n. sp. — J . Head densely covered 

 with very dark brown flat scales, with bronze-blue iridescence, a light 

 blue-white band around the eyes, and a few brown bristles ; aalennse 

 dark brown, the basal joint densely covered with flat white scales; palpi 

 with very dark brown, almost black, scales, bronze-blue iridescence, the 

 penultimate and antipenultimate joints with narrow violet apical bands ; 

 proboscis very dark, practically black, with bright bronze-blue iridescence; 

 eyes black, clypeus black. 



Thorax brown ; prothoracic lobes well covered with flat spatulate 

 light greenish-blue, almost white, scales, and a row of brown bristles ; 

 mesothorax with bronze-brown spindle-shaped scales on the centre of the 

 dorsum, and a broad border of light blue-green flat spatulate scales 

 running nearly all the way around the mesothorax, the scales just 

 cephalad of the scutellum being also of this character ; a bunch of deep 

 orange, or orange-brown bristles over the wing joint, a bare space just 

 dorsad of the pleura extending from the prothoracic lobes to the wing 

 joint ; scutellum covered with small flat and long spatulate green-blue 

 scales, and long dark orange-coloured bristles ; pleura brown, rather well 

 covered with white scales ; metanotum dark brou-n. 



Abdomen dark brown, covered for the most part with blue-green 

 iridescent flat scales. First segment with blue green median line^ and 

 light yellow scales laterally ; second, third and fifth segments with large 

 light yellow lateral spots extending well up on the dorsum ; on the fourth 

 the lateral spot is not noticeable from a dorsal view ; sixth and seventh 

 are more blue than green, and darker than the preceding segments; the 

 sixth with orange, the seventh with black tufts ; the eighth segment is 



November, 1906 



