Captive Caribbean monk seal, <i>Monachus tropicalis</i>, of unknown sex at the New York Aquarium in ca. 1910.  Specimen originally captured from either Arrecife´s Tria´ngulos (Campeche) or Arrecife Alacra´n (Yucatan) in Mexico (Townsend 1909).
New York Zoological Society.
1910
<a rel="nofollow" class="external free" href="http://www.science.smith.edu/msi/pdf/747_Monachus_tropicalis.pdf">http://www.science.smith.edu/msi/pdf/747_Monachus_tropicalis.pdf</a> and <a rel="nofollow" class="external free" href="https://archive.org/stream/zoologica384419101911newy#page/644/mode/2up">https://archive.org/stream/zoologica384419101911newy#page/644/mode/2up</a>