Or slightly shorter (in ossicles with widely spaced arms); arms usually
Or slightly shorter (in ossicles with extensively spaced arms); arms commonly 0.1 mm extended. Apophyses generally 4, slightly curved inward. Ventral ossicles (Figure 6I and Figure 7C,D) normally in the very same shape as dorsal but slenderer and smaller in size, with arms typically 0.1 mm lengthy and apophyses slightly longer or equal in length with arms. Sometimes present flatten Peniagone-type ossicles, with 4 quick apophyses or sometime with no apophyses. Polian vesicle single. Genetic information. See Table S1. Etymology. The species is named in honor of Tatyana Sergeyevna Saveljeva (1902982), a Soviet zoologist and expert on Holothuroidea. Distribution. The species is recognized only from the type locality inside 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, on the other hand it differs by the absence of tube feet in the anteriormost third or fourth from the physique and compact velum. The tube feet within the anterior half in the physique is really a typical 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 as well as other species. This sort of morphology suggests far more 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.6. 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 Nimbolide manufacturer ECH00236, 14 specimens and fragments. Genetic data. No genetic data is readily available 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 location. Depth variety 1360507 m. You will find also about 30 records published in GBIF.org [40] from the Eastern Pacific, off Australia and New Etiocholanolone Protocol 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 kind series of P. vitrea and discovered pronounced variation in ossicle size amongst the kinds of the synonymized species plus the specimens from the Central and East Pacific reported by Clark [39] and from Galathea St. 716. The biggest ossicles were in the Galathea specimen with all the arms reaching 0.7 mm in length whereas inside the form specimens the arms had been 0.three.five mm long. In our specimens from the northwest Pacific the arms in the dorsal ossicles (Figure 8C) attained 0.4 mm, with 2 apophyses, rather straight, longer than arms and spinous. External morphology of those specimens (Figure 8A,B) corresponded effectively to that within the original description of your species. The body was strongly elongated, velum lobe broad and brief, tube feet bordering from posterior half to one particular third o.
