During the years 1958-1960, several shipments of specimens collected in the Caguanes Caves of Cuba were sent to the United States National Museum by GILBERTO SILVA TABOADA. Mr. SILVA'S collections included 3 specimens of a blind anthurid isopod, which I determined to be a species of Cyathura, similar to but apparently specifically distinct from C. curassavica Stork (1940) from Curaçao, Netherlands Antilles. I wish to express my thanks to Mr. SILVA for the gift of these unusual troglobitic crustaceans and to Dr. P. WAGENAAR HUMMELINCK for the loan of specimens of C. curassavica for comparison. Having these specimens at my disposal has enabled me to supplement herein STORK'S description and illustrations.