Descriptions of new species of fishes collected at the Galápagos Islands and along the coast of the United Status of Colombia, 1877-88. Proceedings of the United States National Museum, 12: 149–183
The fishes of North and Middle America: a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Part I. Bulletin of the United States National Museum, 47: 1–1240
The Plagiostomia (Sharks, Skates and Rays). Memoirs of the Museum of Comparative Zoology at Harvard College, 36: 528 p., 77 pl.
Shore fishes collected by the "Albatross" expedition in Lower California, with descriptions of new species. Bulletin of the American Museum of Natural History, 35 (16): 139–181
The marine fishes of Panama. Part I. Field Museum of Natural History Zoological Series 15, (publication no. 215): 1–330.
omega-Conotoxin GVIA receptors of Discopyge electric organ. Characterization of omega-conotoxin binding to the nicotinic acetylcholine receptor. Journal of Biological Chemistry, 266 (21): 13719–13725
A synaptic vesicle specific GTP-binding protein from ray electric organ. Molecular Brain Research, 11 (3–4): 283–290
5'-nucleotidase from the electric ray electric lobe. Primary structure and relation to mammalian and procaryotic enzymes. European Journal of Biochemistry / FEBS, 202 (3): 855–861
Molecular diversity of Ca2+ channel alpha 1 subunits from the marine ray Discopyge ommata. Proceedings of the National Academy of Sciences of the United States of America, 90 (9): 3787–3791
Analysis of a cDNA encoding the major vault protein from the electric ray Discopyge ommata. Gene, 188 (1): 85–90
Lista de especies elasmobranquios de Colombia. Rev. Fen. Anat. Vol I.