Aulosaccus schulzei Ijima. The 1896

• Main Authors: Reiswig, Henry M., Stone, Robert P.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Hexactinellida; Lyssacinosida; Rossellidae; Aulosaccus; Aulosaccus schulzei; Kamchatka; Kamchatka Peninsula; Alaska; Aleutian Islands
• Online Access: https://doi.org/10.5281/zenodo.5261626; http://treatment.plazi.org/id/03D287B2FFA436099AD7FCCD2F61FEE7

Aulosaccus schulzei Ijima, 1896 (Figs. 14 & 15, Table 7) Synonymy. Aulosaccus schulzei Ijima, 1896: 252; 1898: 51; 1904: 110; Koltun 1967: 68; Tabachnick 2002: 1447; Lee et al. 2007: K257; Stone et al. 2011: 33. Aulosaccus albatrossi Okada, 1932:78; Koltun 1967: 68. Material examined. USNM# 1196554, ROV ' Jason II' from RV ' Roger Revelle', dive J2105, 06 August 2004, 4.5 km W of Cape Sajaka, Tanaga Island, Aleutian Islands, Alaska, 51º52.021'N, 178º17.720'W, 1320 m, 1 partial specimen attached to cobble, dry & ethanol. Comparative material examined. A. schulzei holotype, MCZ 10004, Sagami Bay, Japan, prior to 1896, dry. A. albatrossi holotype, USNM 22111, USFS 'Albatross' stn 4797, 20 June 1906, Staritschkof Island off South Kamchatka Peninsula, 52˚37.8'N, 158˚49.8'E, 1248 m, ethanol Description. The collected fragment is the top quarter of a slightly flattened sac, 53 cm long by 25 cm diameter, with large flared oscular margin (Figs. 14A, B); dimensions of the fragment (Fig. 14C) are 135 mm tall, 110 mm wide, and 34 mm in wall thickness in the middle. All surfaces are smooth, without prostalia, veil, or conules. The oscular margin is thin and without marginalia. The dermal surface has visible strands of hypodermal pentactins and diactins, oriented in all directions, forming a subsurface network supporting the dermal spicule lattice and obscuring the apertures of the subdermal inhalant canals (Figs. 14C, D). The dermal lattice (Figs. 14D, E) is a rectangular meshwork with mean side length of 122 µm, composed of about equal numbers of hexactins, pentactins, and stauractins. The atrial surface has openings of exhalant canals generally visible through the less regularly organized atrial lattice (Fig. 14F). Meshes of the atrial lattice, composed mainly of hexactins with a few stauractins and pentactins, are not rectangular and microscleres, not present in the dermal lattice, make up a significant component of this structure. The main supporting skeleton is a network of loose interwoven unfused diactins ...