Coordinates must be inversed on longitude

I noticed that for Crotalus simus, a rattlesnake in Central America, the longitude does not have the negative (-) sign, so the coordinates are actually pointing to locality in the Bay of Bengal off India and Sri Lanka. Some of the longitude coordinates may need to be inversed. I checked for a few of these sequences, and Genbank’s coordinates are erroneous and do not have the negative sign for longitude. This should be a good thing to flag in the data curation/filtering process!