I). Ventral ossicles (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 Seclidemstat Autophagy length about 0.05 mm; apophyses 4, longer than arms, about 0.07 mm in length. Arms and apophyses spinous both in dorsal and ventral ossicles. Calcareous ring pieces with 7 pairs of arms, which may be subdivided. A few of the arms are multiply branched at their ends. Polian vesicle single. Genetic information. See Table S1. Distribution. 5 DNQX disodium salt Purity records in the Kuril amchatka Trench area and on abyssal plain east of the trench. Depth 5005427 m.Diversity 2021, 13,12 ofRemarks. By external morphology, examined specimens corresponded well to the original description of Peniagone purpurea in colour, shape of your body, velum morphology, tube feet and dorsal papillae number and arrangement. Re-examination in the syntypes of Elpidia purpurea NHM 83.six.18.four and NHM 83.6.18.5 revealed some differences involving them and our specimens within the dorsal ossicle morphology. In the syntypes, apophyses had been curved outwardly in the majority of dorsal ossicles (Figure 5C ), whereas in the northwest Pacific specimens they were either straight or curved inward. Furthermore, ossicles from the syntypes were smaller: arms as much as 0.08 mm and apophyses up to 0.07 mm. Nevertheless, ossicle size and shape of apophyses inside the northwest Pacific specimens varied involving the stations. Specimens from St. 5620 had the greatest ossicles with arms as much as 0.12 mm and apophyses as much as 0.1 mm. The apophyses in most ossicles had been placed additional extensively and slightly curved inwardly, while 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 long and apophyses were straight or outwardly curved. The variation in dorsal ossicles of P. purpurea demands further research, as a result at present we determine our specimens as Peniagone cf. purpurea. three.five. 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 6 08.738 N, 146 00.789 45 59.512 E, 3305304 m. The specimen will probably be deposited at MIMB, at present stored at IORAS, Cat. Nr ECH02165. Paratypes. three specimens 450 mm in length, collected in the exact same station because the holotype. Paratypes is going to be deposited at SGN, at the moment stored at IORAS, Cat. Nr ECH02164 and ECH02151. Diagnosis. Body elongated, around three times provided that wide. Colour in alcohol grey. Tube feet up to 8 pairs, missing within the anterior 1/3 in the body. Velum broad and short, formed by two pairs of papillae. Two pairs of little papillae behind velum. Dorsal ossicles with curved arms as much as 0.15 mm long; apophyses four, up to 0.12 mm lengthy; apophyses slightly thicker than arms. Ventral ossicles with curved arms 0.07.1 mm in length and four apophyses longer than arms, up to 0.14 mm, or with additional horizontal arms up to 0.two mm. Material description. Physique strongly elongated (Figure 3C,D and Figure 6A,B). Skin rather thick, practically non-transparent in preserved state. Ambulacral appendages and tentacles are mostly lost, handful of tube feet are preserved within the paratype, IORAS ECH02151. Within the latter only 7 pairs of tube feet are present, even so some smaller posteriormost tube feet may well happen to be lost. Arms and apophyses of dorsal ossicles spinous; spines on apophyses much more various (Figure 6C and Figure 7A,B). Apophyses in dorsal ossicles on the similar length with arms.