Or slightly shorter (in ossicles with widely spaced arms); arms normally
Or slightly shorter (in ossicles with widely spaced arms); arms commonly 0.1 mm lengthy. Apophyses often four, slightly curved inward. Ventral ossicles (Figure 6I and Figure 7C,D) normally in the same shape as dorsal but slenderer and smaller in size, with arms normally 0.1 mm long 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 Compound 48/80 Technical Information species is named in honor of Tatyana Sergeyevna Saveljeva (1902982), a Soviet zoologist and specialist on Holothuroidea. Distribution. The species is identified only from the form locality in the southern a part of the Sea of Okhotsk. Remarks. Peniagone saveljevae resembles P. dubia and P. mus in external morphology within the group on the northwest Pacific species, nevertheless it differs by the absence of tube feet in the anteriormost third or fourth of the physique and tiny velum. The tube feet inside the anterior half from the physique is usually a prevalent feature 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 kind of morphology suggests additional epibenthic life style. Peniagone saveljevae also differs by the dorsal ossicles with four apophyses and curved arms up to 0.15 mm long. 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]; O’Loughlin, 1998: 504 [37]. Peniagone vitrea var. C2 Ceramide Autophagy 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 3 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 information is offered for examined specimens. Distribution. Sort locality is off southern Chile in the depth 2652 m (1450 fathoms), Challenger, St. 302. Other confirmed records are within 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 will find 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 presently has two junior synonyms: P. vitrea var. setosa Ludwig and P. setosa Ludwig. Hansen [24] has re-examined the sort series of P. vitrea and identified pronounced variation in ossicle size among the sorts of the synonymized species and also the specimens from the Central and East Pacific reported by Clark [39] and from Galathea St. 716. The most significant ossicles had been within the Galathea specimen together with the arms reaching 0.7 mm in length whereas within the sort specimens the arms have been 0.three.5 mm lengthy. In our specimens from the northwest Pacific the arms in 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 effectively to that in the original description on the species. The body was strongly elongated, velum lobe broad and brief, tube feet bordering from posterior half to one particular third o.