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 Charybdotoxin Purity length about 0.05 mm; 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 may be subdivided. A few of the arms are multiply branched at their ends. Polian vesicle single. Genetic information. See Table S1. Distribution. Five records inside the Kuril amchatka Trench area and on abyssal plain east of your trench. Depth 5005427 m.Diversity 2021, 13,12 ofRemarks. By external morphology, examined specimens corresponded properly PF-06873600 supplier towards 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 83.6.18.four and NHM 83.6.18.five revealed some variations among them and our specimens within the dorsal ossicle morphology. Inside the syntypes, apophyses were curved outwardly in the majority of dorsal ossicles (Figure 5C ), whereas within the northwest Pacific specimens they had been either straight or curved inward. Additionally, ossicles of your syntypes had been 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 inside the northwest Pacific specimens varied amongst the stations. Specimens from St. 5620 had the greatest ossicles with arms up to 0.12 mm and apophyses up to 0.1 mm. The apophyses in most ossicles had been placed far more broadly and slightly curved inwardly, although few ossicles with apophyses curved outwardly have been also present. In the northwest Pacific specimens from other stations the arm length of ossicles was 0.1 mm long and apophyses had been straight or outwardly curved. The variation in dorsal ossicles of P. purpurea demands further studies, thus at present we identify our specimens as Peniagone cf. purpurea. three.five. Peniagone saveljevae Kremenetskaia et Gebruk sp. nov. Figure 3C,D, Figures 6 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 might be deposited at MIMB, presently stored at IORAS, Cat. Nr ECH02165. Paratypes. 3 specimens 450 mm in length, collected in the identical station as the holotype. Paratypes will likely be deposited at SGN, at the moment stored at IORAS, Cat. Nr ECH02164 and ECH02151. Diagnosis. Physique elongated, around three instances so long as wide. Colour in alcohol grey. Tube feet up to eight pairs, missing in the anterior 1/3 with the body. Velum broad and brief, formed by two pairs of papillae. Two pairs of tiny papillae behind velum. Dorsal ossicles with curved arms as much as 0.15 mm lengthy; apophyses 4, up to 0.12 mm extended; apophyses slightly thicker than arms. Ventral ossicles with curved arms 0.07.1 mm in length and 4 apophyses longer than arms, as much as 0.14 mm, or with extra horizontal arms up to 0.two mm. Material description. Physique strongly elongated (Figure 3C,D and Figure 6A,B). Skin rather thick, just about non-transparent in preserved state. Ambulacral appendages and tentacles are largely lost, couple of tube feet are preserved in the paratype, IORAS ECH02151. Inside the latter only 7 pairs of tube feet are present, having said that some modest posteriormost tube feet may possibly have been lost. Arms and apophyses of dorsal ossicles spinous; spines on apophyses more various (Figure 6C and Figure 7A,B). Apophyses in dorsal ossicles on the identical length with arms.
