Thyonella mexicana ( Deichmann, 1941 )

Martins, Luciana, 2018, Taxonomy of the genus Thyonella (Holothuroidea: Dendrochirotida), with mention of the first record of T. sabanillaensis from the southwestern Atlantic Ocean, Zootaxa 4527 (1), pp. 75-86 : 83

Thyonella mexicana ( Deichmann, 1941)

Thyonacta mexicana Deichmann, 1941: 101 –102, pl.17, figs. 1–13

Thyonella mexicana —Solís-Marín et al., 2009: 96–97, pl. 23.

Material examined. None. The description below is based on Deichmann (1941) and Solís-Marín et al. (2009).

Type locality. Bahia Sana Gabriel , Isla Espíritu Santo, Baja California ( Deichmann, 1941)

Distribution. Gulf of California, Mexico and Panama. Bathymetric range: 10–35 m (Solís-Marín et al., 2009).

Diagnosis. (from Deichmann, 1941 and Solís-Marín et al., 2009). Tube feet distributed along the ambulacra in two rows and scattered in the interambulacra. Body wall ossicles include four-holed deep cups; two types of fourholed buttons; i) large and strongly knobbed and ii) slight knobbed and knobbed plates. In the tentacles perforated supporting rods and introvert with rosettes.