Abstract
Two new species of black flies are described from the Darjeeling area of India, viz., Simulium (Eusimulium) dasguptai and Simulium (Simulium) biforaminiferum. In addition, the female of S. (E.) nemorivagum Datta and the larva of S. (S.) ramosum Puri are described from the same area. S. (E.) gracilis Datta and purii Datta are now placed in the vernum group.