Or slightly shorter (in DNQX disodium salt web ossicles with widely spaced arms); arms normally
Or slightly shorter (in ossicles with extensively spaced arms); arms usually 0.1 mm extended. Apophyses generally four, slightly curved inward. Ventral ossicles (Figure 6I and Figure 7C,D) commonly of your same shape as dorsal but slenderer and smaller in size, with arms commonly 0.1 mm extended and apophyses slightly longer or equal in length with arms. Occasionally 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 professional on Holothuroidea. Distribution. The species is identified only from the form locality within the southern a part of the Sea of Okhotsk. Remarks. Peniagone saveljevae resembles P. dubia and P. mus in external morphology within the group with the northwest Pacific species, having said that it differs by the absence of tube feet inside the anteriormost third or fourth from the physique and little velum. The tube feet inside the anterior half from the body is really a VBIT-4 manufacturer frequent 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 much more epibenthic way of life. Peniagone saveljevae also differs by the dorsal ossicles with 4 apophyses and curved arms as much as 0.15 mm lengthy. 3.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(4) [synonymy] [22]; 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, 3 specimens; St. 5635, 08.09.1966, Galathea Trawl, 44 24 N, 149 10 E, 3900135 m, IORAS ECH00236, 14 specimens and fragments. Genetic information. No genetic information is out there for examined specimens. Distribution. Type locality is off southern Chile in the depth 2652 m (1450 fathoms), Challenger, St. 302. Other confirmed records are inside 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. There are actually also about 30 records published in GBIF.org [40] from the Eastern Pacific, off Australia and New Zealand identified by P.M. O’Loughlin, N. Davey and D. Pawson. Remarks. Peniagone vitrea at the moment 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 sorts of the synonymized species as well as the specimens from the Central and East Pacific reported by Clark [39] and from Galathea St. 716. The biggest ossicles have been in the Galathea specimen with the arms reaching 0.7 mm in length whereas inside the type specimens the arms had been 0.3.5 mm extended. In our specimens in the northwest Pacific the arms in the dorsal ossicles (Figure 8C) attained 0.4 mm, with two apophyses, rather straight, longer than arms and spinous. External morphology of these specimens (Figure 8A,B) corresponded effectively to that in the original description with the species. The body was strongly elongated, velum lobe broad and short, tube feet bordering from posterior half to one third o.
