Complex sentence: Hector's dolphin was named after Sir James Hector (1834--1907), who was the curator of the Colonial Museum in Wellington (now the Museum of New Zealand Te Papa Tongarewa).
Split into simpler sentences: Hector's dolphin was named after Sir James Hector (1834--1907). He was the curator of the Colonial Museum in Wellington (now the Museum of New Zealand Te Papa Tongarewa).