Just checked my records and the Scotch Bonnet I have are from Pepper Joe's, ran at 80% germination rate, and are chinense species...
I am also growing Jamaican Hot Red, Jamaican Hot Yellow, and Jamaican Hot Chocolate from Tomato Growers...the website does not say what species they are but they have the "Scotch Bonnet" shape...here is what the TG website says about the red and yellow..."Very compact, densely foliaged plants bear an abundance of bright yellow or red, thin-skinned hot peppers that are shaped like a tam o' shanter. Actually a type of squash pepper. Interestinvg shape and spicy taste make this pepper good to eat fresh, pickle, or use as a garnish."