326 THE CANADIAN ENTOMOLOGIST. 



coxa 20, femur + trochanter 48, tibia 44, tarsus 24 long. Bristles 



of anal wing 28 long. Anal lobes have one long bristle and two short 



spines. Rostral loop short, 120 long. 



Fiilvhiaria amygdali, Ckll., 1896. — Treated with potash, light yellow 



brown; internal juice removed colourless, 400 long, 180 broad. Segments 



of the antenna : (i) 20, (2) 16, (3) 24, (4) 16, (5) 16, (6) 28 long. Front 

 leg: coxa 32, femur + trochanter 48, tibia 32, tarsus 28 long. Rostral 

 loop short, 140 long. Anal lobe with one long bristle and two short 

 spines. 



Ptilvinaria Elwhonii^ King, 1901. — Larva 520 long, 260 broad. 

 Antennal joints: (i) 16, (2) 20, (3) 32, (4) 20, (5) 20, (6) 40 long. 

 Bristles of anal lobe 340 long, the two spines 20 long. Rostral loop very 

 stout, 240 long. Front leg : coxa 24, femur + trochanter 60, tarsus 52, 

 tibia 44 long. 



Pulvinaria viburiii. King, 1901. — Body 520 long, 240 broad. 



Antennal joints : (i) 20, (2) 16, (3) 28, (4) 16, (5) 20, (6) 40. Front 



leg : coxa 28, femur + trochanter 72, tibia 68, tarsus 28 long. Hairs of 



anal ring 48 long, those of the anal tubercule 342 long, spines 20 long, 



rostral loop 188 long. All the above meastiremenis are in micromilli- 

 meters. 



AN ALASKAN MOSQUITO. 



BY C. S. LUDLOW, 

 Laboratory of the Office of the Suri^eon-General, U. S. Army, Washington, D.C. 



Among some mosquitoes lately sent from Alaska is a species which, 

 coming from the far north (65° N.), has the unique position of standing 

 near three mosquitoes found in much warmer climates, /. e., Theobaldia 

 ivmidata. Shrank, found in Europe, Mexico and California, an Italian 

 species of which Falbici says, " Fin ora fu trovata solamenta a Macarese 

 ed a Pato," diwd penetrans, R. Desvoidy, found in France. 



Theobaldia Alaskaensis, n. sp. — Female. — Head dark brown, 

 covered with white curved scales, and dark brown forked scales 

 on the occiput, with Hat white scales on the sides, and extending 

 dovvn under the labium ; a few brown bristles around and between 

 the eyes ; antenna3 dark brown, heavy white pubescence and sparse 

 brown verticels, first and second joints with some white flat scales, 

 basal joint testaceous, with a few w^hite flat scales on the median side ; 



October, 1906. 



