I). Ventral ossicles (Bomedemstat Description Figure 5J ) with arms curved outwards (Figure 5JI). Ventral

I). Ventral ossicles (Bomedemstat Description Figure 5J ) with arms curved outwards (Figure 5J
I). Ventral ossicles (Figure 5J ) with arms curved outwards (Figure 5J,L) or straight (Figure 5K), arm length about 0.05 mm; Ethyl Vanillate Inhibitor apophyses 4, longer than arms, about 0.07 mm in length. Arms and apophyses spinous each in dorsal and ventral ossicles. Calcareous ring pieces with 7 pairs of arms, which might be subdivided. A number of the arms are multiply branched at their ends. Polian vesicle single. Genetic information. See Table S1. Distribution. 5 records inside the Kuril amchatka Trench area and on abyssal plain east in the trench. Depth 5005427 m.Diversity 2021, 13,12 ofRemarks. By external morphology, examined specimens corresponded effectively towards the original description of Peniagone purpurea in colour, shape from the physique, velum morphology, tube feet and dorsal papillae number and arrangement. Re-examination of the syntypes of Elpidia purpurea NHM 83.six.18.4 and NHM 83.six.18.5 revealed some differences involving them and our specimens within the dorsal ossicle morphology. Inside the syntypes, apophyses had been curved outwardly in the majority of dorsal ossicles (Figure 5C ), whereas inside the northwest Pacific specimens they were either straight or curved inward. Also, ossicles from the syntypes were smaller sized: arms up to 0.08 mm and apophyses as much as 0.07 mm. On the other hand, ossicle size and shape of apophyses in the northwest Pacific specimens varied involving the stations. Specimens from St. 5620 had the biggest ossicles with arms as much as 0.12 mm and apophyses as much as 0.1 mm. The apophyses in most ossicles were placed more broadly and slightly curved inwardly, although few ossicles with apophyses curved outwardly had been also present. In the northwest Pacific specimens from other stations the arm length of ossicles was 0.1 mm extended and apophyses have been straight or outwardly curved. The variation in dorsal ossicles of P. purpurea calls for additional studies, as a result at present we determine our specimens as Peniagone cf. purpurea. three.5. Peniagone saveljevae Kremenetskaia et Gebruk sp. nov. Figure 3C,D, Figures six and 7. Holotype. Specimen 60 mm, RV Akademik M.A. Lavrentiev, cruise 71 (SokhoBio), St. 01-11, 11.07.2015, Agassiz Trawl, 46 09.047 six 08.738 N, 146 00.789 45 59.512 E, 3305304 m. The specimen are going to be deposited at MIMB, at the moment stored at IORAS, Cat. Nr ECH02165. Paratypes. 3 specimens 450 mm in length, collected in the exact same station because the holotype. Paratypes will likely be deposited at SGN, currently stored at IORAS, Cat. Nr ECH02164 and ECH02151. Diagnosis. Physique elongated, about 3 instances provided that wide. Color in alcohol grey. Tube feet up to eight pairs, missing in the anterior 1/3 on the physique. Velum broad and short, formed by two pairs of papillae. Two pairs of little papillae behind velum. Dorsal ossicles with curved arms up to 0.15 mm extended; apophyses four, as much as 0.12 mm lengthy; apophyses slightly thicker than arms. Ventral ossicles with curved arms 0.07.1 mm in length and 4 apophyses longer than arms, up to 0.14 mm, or with additional horizontal arms up to 0.two mm. Material description. Body strongly elongated (Figure 3C,D and Figure 6A,B). Skin rather thick, pretty much non-transparent in preserved state. Ambulacral appendages and tentacles are mainly lost, few tube feet are preserved in the paratype, IORAS ECH02151. Within the latter only 7 pairs of tube feet are present, nevertheless some modest posteriormost tube feet could possibly have been lost. Arms and apophyses of dorsal ossicles spinous; spines on apophyses much more many (Figure 6C and Figure 7A,B). Apophyses in dorsal ossicles in the similar length with arms.