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, i.e., Theobaldia annulata, Sharnk, found in Europe, Mexico and California, an Italian species of which Falbici says, “Fin ora fu trovata solamenta a Macareseed a Pato,” and penetrans, R. Desvoidy, found in France.