1. Haemogregarina pseudemydis n. sp. (Apicomplexa: Haemogregarinidae) and Pirhemocyton chelonarum n. sp. in turtles from Louisiana;Acholonu;J. Protozool.,1974
2. The “paranuclear corpuscles” in poikilothermal vertebrates. II. Description of a new species of Toddia in Electrophorus electricus (electric eel), with an expansion of the key to the species of the genus Toddia in poikilothermal vertebrates;Arcay;Acta Biol. Venez.,1971
3. The “paranuclear corpuscles” in poikilothermic vertebrates: description of a new species of Pirhemocyton in Iguana iguana of Venezuela, with remarks on the nature of these organisms and their relation to allied parasites;Arcay;Mem. Inst. Oswaldo Cruz,1971
4. The “paranuclear corpuscles” in poikilothermal vertebrates. I. Description of a new species of Toddia from Iguana iguana in Venezuela;Arcay;Acta Biol. Venez.,1971
5. Saurian malaria: development of sporozoites in two species of phlebotomine sandflies;Ayala;Science,1970