Leptophis stimsoni, commonly known as the grey lora or the Trinidad upland parrot snake, is a small species of snake in the family Colubridae. The species is endemic to the Republic of Trinidad and Tobago. “Molecular and morphological analyses confirm that the Gray Lora (Leptophis stimsoni) is a distinct species endemic to Trinidad’s Northern Range, differing from other Leptophis species by its solid gray-green dorsum and fewer than 150 ventral scales .”.