On the taxonomic status of Holothuria (Holothuria) tubulosa (s. s.) from the Algerian coast with the description of a new Mediterranean species, Holothuria (Holothuria) algeriensis n. sp. (Echinodermata: Holothuroidea: Holothuriidae) Author Mezali, Karim Protection, Valorization of Coastal Marine Resources and Molecular Systematics Laboratory. Department of Marine Science and Aquaculture. Faculty of Natural Sciences and Life. Abdelhamid Ibn Badis University-Mostaganem, PO Box 227, Route nationale N ° 11, Kharrouba, 27000, Mostaganem, Algeria. Author Thandar, Ahmed S. School of Life Sciences, University of KwaZulu-Natal, P / Bag X 54001, Durban 4000, South Africa. Author Khodja, Ihcene text Zootaxa 2021 2021-06-03 4981 1 89 106 journal article 5927 10.11646/zootaxa.4981.1.4 fcb42055-1ae9-4705-b471-a6b9ab150e33 1175-5326 4897620 C86B7AAB-F7D3-4ED0-9C81-F141416F6118

TABLE 1. Different types of measurements carried out on ossicles (for the dorsal surface the prefix “D” is used and for the ventral surface the prefix “V” is used).

Abbreviation	Variable description
Buttons
LBD	Length of buttons of dorsum
WBD	Width of buttons of dorsum
WhBD	Width of holes of buttons of dorsum
NhBD	Number of holes of buttons of dorsum
LBV	Length of buttons of ventrum
WBV	Width of buttons of ventrum
WhBV	Width of holes of buttons of ventrum
NhBV	Number of holes of buttons of ventrum
Tables
HSD	Height of spire of tables of dorsum
DDD	Disk diameter of tables of dorsum
RDHD	Ratio between disk diameter and height of spire of the dorsum tables
HSV	Height of spire of ventrum tables
DDV	Disk diameter of ventrum tables
RDHV	Ratio between disk diameter and height of spire of ventrum tables