Coloration alone indicated that this snake was Bothriechis supraciliaris.
This occurred in those “good old days,” in the days when, believe it or not, snakes (including this one, but usually baby boas), mouse opossums, tarantulas, and other creatures were imported by accident in shipments of fruit and especially in bananas. This snake arrived with bananas at a fruit vendor in Boston in the early 50s and rather than killing it the Boston Museum of Science was notified. The snake was gathered in due haste by researchers from the Museum’s Herp Dept.

Back then it was identified as an eyelash viper, Bothrops (now Bothriechis schlegelii (this was 1954, the same year that B. supraciliaris, the blotched palm viper was described, but back then very few folks knew of the existence of the latter). For reasons that were unknown to me then and remain so today, rather than being preserved the snake was maintained in the live collection and when a year or so later I saw the beautiful snake and got excited about its existence it was given to me. I kept it for years, photographed it (as best I could in those days) and after its death the snake was disposed of in a now forgotten manner. From time to time I have published its photo. For years nothing was said, but in recent years I have been told that the snake, rather than a schlegelii was a supraciliaris. Others steadfastly maintained it was a schlegelii.

Nothing remains of this snake but its old photos. Its identification has not really been settled. Although I’ll probably never know for certain, Just for the record, I have since seen snakes that were very similar to my questionable snake, and that were definitely supraciliaris. I’m still leaning in that direction and always shall.