Two　new　eurypterids,　a　pterygotid　Erettopterus　qujingensis　n.　sp.,　and　a　slimoniid,　Slimonia　sp.,　are　described　from　the　upper　Silurian　(Pridolian)　Yulongsi　Formation　of　Yunnan　Province,　China.　Erettopterus　qujingensis　n.　sp.　is　characterized　by　several　inversely　curved　ramus　denticles　and　a　metastoma　with　a　deep　notch　in　the　center.　The　discovery　not　only　extends　the　geographic　extent　of　the　genus　Erettopterus　and　Slimonia　from　Euramerica　to　southwest　China,　but　also　gives　insight　into　the　similarity　of　ecosystem　structures　across　the　Silurian　world.　UUID:　http://zoobank.org/939e82cd-58fc-415b-9209-514aecef2267