The scientific clue emerged when a British medical officer Patrick Manson discovered for the first time that parasites were transmitted by mosquitoes. In 1877 while working in Amoy, a coastal town in China, he found that the mosquito Culex fatigans (now Culex quinquefasciatus) was the vector of the filarial roundworm that he called Filaria sanguinis hominis (but now Wuchereria bancrofti). His findings were published in the China Customs Medical Report in 1878,[28] and relayed by Spencer Cobbold to the Linnean Society in London.[29] This was the first direct evidence that mosquitoes could transmit microscopic parasites in humans, further suggesting that the same could be true in case of malaria.[5][30]