New apodid species from southern Australia (Echinodermata: Holothuroidea: Apodida) Author O’Loughlin, P. Mark text Memoirs of Museum Victoria 2007 2007-12-31 64 53 70 https://museumsvictoria.com.au/collections-research/journals/memoirs-of-museum-victoria/volume-64-2007/pages-23-34/ journal article 10.24199/j.mmv.2007.64.4 1447-2554 12211133 Taeniogyrus Semper, 1868 Figures 2a , 3a,b , 4–7 Diagnosis (as emended by Rowe, 1976 ) . Chiridotid genus with wheels and sigmoid ossicles present, scattered, or in groups or clustered into papillae; wheels with serrations continuous around the inner margin; tentacles 10 or 12. Species in southern Australia . Taeniogyrus heterosigmus Heding, 1931 ; T. papillis O’Loughlin sp. nov. ; T. roebucki ( Joshua, 1914 ); T. tantulus O’Loughlin sp. nov. Remarks . An abundance of T. roebucki (Joshua) material from southernAustralia, including the types , is present in the collections of Museum Victoria and was available for comparative examination. T. roebucki differs from the other 3 Taeniogyrus species in southern Australia in having only 2 pairs of digits per tentacle. Rowe (1995) reported T. heterosigmus Heding as known only from the type locality (Koombana Bay in SW Australia ). I have found specimens at Normanville in Gulf St. Vincent in South Australia , in the rock and sediment shallows (NMV F74612 (1), F82706 (4), F82707 (5)), and confirmed their identity with the type (ZMH E.5032). T. heterosigmus differs in 3 significant ways from the other 3 species of Taeniogyrus in southern Australia : dense round clusters of wheels in the body wall; 2 series of ciliated funnels along the coelomic wall, in the left lateral and right ventral interradii; multiple branching gonad tubules. T. heterosigmus is similar to T. roebucki : sigmoid hooks significantly larger than wheels; tentacle rods with lateral denticulations that are papillate or sub-columnar, never with additional fine spinelets apically. In T. heterosigmus the wheels are in rounded dense clusters; in T. roebucki wheels are in close irregular bands adjacent to the longitudinal muscles, and sparse mid-interradially. In T. heterosigmus the hooks are scattered in all interradii; in T. roebucki hooks are aligned transversely in paired series over the edges of longitudinal muscles.