Or slightly shorter (in ossicles with widely spaced arms); arms usually
Or slightly shorter (in ossicles with extensively spaced arms); arms usually 0.1 mm long. Apophyses often 4, slightly curved inward. Ventral ossicles (Figure 6I and Figure 7C,D) usually from the same shape as dorsal but slenderer and smaller sized in size, with arms typically 0.1 mm extended and apophyses slightly longer or equal in length with arms. Sometimes present flatten Peniagone-type ossicles, with four quick apophyses or sometime with no apophyses. Polian vesicle single. Genetic data. See Table S1. Etymology. The species is named in honor of Tatyana Sergeyevna Saveljeva (1902982), a Soviet zoologist and specialist on Holothuroidea. Distribution. The species is known only in the type locality in the southern part of the Sea of Okhotsk. Remarks. Tenidap Biological Activity Peniagone saveljevae resembles P. dubia and P. mus in external morphology inside the group in the northwest Pacific species, having said that it differs by the absence of tube feet in the anteriormost third or fourth with the physique and modest velum. The tube feet inside the anterior half of the body is often a widespread function in Peniagone occurring in Peniagone islandicaDiversity 2021, 13,13 ofDeichmann, P. azorica von Marenzeller, P. willemoesi (Th l), P. herouardi Gebruk, P. vedeli Hansen and other species. This type of morphology suggests additional epibenthic life-style. Peniagone saveljevae also differs by the dorsal ossicles with four apophyses and curved arms as much as 0.15 mm extended. three.six. Peniagone vitrea Th l, 1882 Figure 8A . Peniagone vitrea Th l, 1882: 502, Plates VII(7), XXXIV(178), XLIV(10) [5]; Hansen, 1975: 14850, Figure 70 [synonymy] [24]; Gebruk, 1990 (in Russian): 934, Figure 34(four) [synonymy] [22]; MCC950 Biological Activity O’Loughlin, 1998: 504 [37]. Peniagone vitrea var. setosa Ludwig, 1893: 109; 1894: 10508 [38]. Peniagone setosa Ludwig–Clark, 1920: 136 [39]. Material examined. RV Vityaz, St. 5603, 15.07.1966, Sigsbee Trawl, 46 22 N, 153 three E, 3175250 m, IORAS ECH01201, three specimens; St. 5635, 08.09.1966, Galathea Trawl, 44 24 N, 149 ten E, 3900135 m, IORAS ECH00236, 14 specimens and fragments. Genetic data. No genetic data is obtainable for examined specimens. Distribution. Form locality is off southern Chile at the depth 2652 m (1450 fathoms), Challenger, St. 302. Other confirmed records are in the Eastern and Central Pacific, off Australia, and Antarctic (Figures 11 and 12). The new records are from the northwest Pacific, Kuril amchatka Trench region. Depth variety 1360507 m. You’ll find also about 30 records published in GBIF.org [40] in the Eastern Pacific, off Australia and New Zealand identified by P.M. O’Loughlin, N. Davey and D. Pawson. Remarks. Peniagone vitrea currently has two junior synonyms: P. vitrea var. setosa Ludwig and P. setosa Ludwig. Hansen [24] has re-examined the type series of P. vitrea and located pronounced variation in ossicle size among the varieties of the synonymized species plus the specimens from the Central and East Pacific reported by Clark [39] and from Galathea St. 716. The largest ossicles have been inside the Galathea specimen using the arms reaching 0.7 mm in length whereas within the type specimens the arms were 0.three.five mm long. In our specimens in the northwest Pacific the arms inside the dorsal ossicles (Figure 8C) attained 0.four mm, with 2 apophyses, rather straight, longer than arms and spinous. External morphology of these specimens (Figure 8A,B) corresponded properly to that within the original description on the species. The body was strongly elongated, velum lobe broad and quick, tube feet bordering from posterior half to a single third o.