Ostracoda (Myodocopa) from Anchialine Caves and Ocean Blue Holes Author Kornicker, Louis S. Author Iliffe, Thomas M. Author Harrison-Nelson, Elizabeth text Zootaxa 2007 2007-08-31 1565 1 1 151 https://biotaxa.org/Zootaxa/article/view/zootaxa.1565.1.1 journal article 10.11646/zootaxa.1565.1.1 1175­5334 5095810 A2CDD9CB-CA5E-418B-A471-9EEFDC5CCF16 Danielopolina Kornicker & Sohn 1976 Type species. Danielopolina carolynae Kornicker & Sohn 1976 . Composition. This genus contains two subgenera D. ( Humphreysella ) Kornicker & Danielopol 2006 in Kornicker et al. 2006 and D. ( Danielopolina ) Kornicker et al. 2006 . Members of both subgenera are represented in the present collection. Correction. Kornicker & Iliffe (1998: 84) stated Danielopolina species A was collected in Open Rock Cave. The collection site should have been listed as Oven Rock Cave. Diagnosis of subgenera. Humphreysella is without a posterior bristle on the protopod of the second antenna. Danielopolina bears a posterior bristle on the protopod of the second antenna. Discussion of first antennae. The first and second segments of the first antennae of the adult female holotype and paratype of D. palmeri are linear ( Fig. 12 a–c ), whereas those segments of the adult female first antennae of the holotype and a paratype of D. exuma Kornicker & Iliffe 1998 illustrated by Kornicker & Iliffe (1998 : fig. 51d–f) form a right angle. The first and second segments of the first antenna of another adult female of a paratype of D. exuma examined herein also form a right angle ( Fig. 13 j ). A survey of some of the literature in which species of Danielopolina have been described ( Kornicker & Iliffe 1989a , 1998, 2000) shows that some illustrations of the first antennae have linear first and second segments, and some show the two segments at right angles, and juveniles as well as adults of both sexes have first antennae of both forms. Examination of whole specimens showed that when the first and second segments are at right angles, the first antenna is partly withdrawn inside the carapace; whereas when the two segments are linear segments two– eight extend horizontally outside the carapace between the anterior edges of the valves. Apparently, when an extrinsic muscle is taut, segments one and two are linear. The various angles between the first and second segments of first antennae of species of Thaumatoconcha illustrated by Kornicker & Sohn (1976 : fig. 7) indicate that a similar mechanism also operates in members of that genus.