Subgenus Hyalonema (Coscinonema) Ijima, 1927
- Coscinonema Ijima, I. 1927. The Hexactinellida of the Siboga Expedition. 1-383 26 pls in Weber, M.W.C. (ed.). Siboga-Expeditie, livr. 106, monogr. 6. Leiden : J.E. Brill. [50] [proposed as a subgenus of Hyalonema Gray, 1835].
Type species:
Hyalonema (Coscinonema) kirkpatricki Ijima, 1927 by original designation.
Distribution
Extra Distribution Information
West Indian region, SW, S and N Atlantic, Indian Ocean, Indo-Malayan region, NW, central and E Pacific.
Distribution References
- Ijima, I. 1927. The Hexactinellida of the Siboga Expedition. 1-383 26 pls in Weber, M.W.C. (ed.). Siboga-Expeditie, livr. 106, monogr. 6. Leiden : J.E. Brill. [365]
- Lévi, C. 1964. Spongiaires des zones bathyale, abyssale et hadale. 63-112 pls 2-11 in Wolff, T. (ed.). Galathea Report. Scientific results of the Danish Deep-Sea Expedition Round the World, 1950–1952. Copenhagen : Danish Science Press Vol. 7. [108]
- Okada, Y. 1932. Report on the hexactinellid sponges collected by the United States Fisheries steamer Albatross in the north-western Pacific during the summer of 1906. Proceedings of the United States National Museum 2935 81: 1-118 pls 1-6 [25]
Diagnosis
Body is oval, without atrial cavity and osculum when small and funnel-like, with atrial cavity and osculum in large specimens. One species has sieve-plate with small and uniformly distributed open meshes. The apical cone is found in some species, in one species the atrial cavity is divided by septas into four parts. Choanosomal spicules are diactines and in most species together with hexactines. Ambuncinates are known in a single species. Pleuralia oscularia, when present, are usually pinular diactines. Basalia, when known, have usually 4 teeth (in one species 2–6 teeth). Acanthophores, when known, are stauractines, tauactines and pentactines. Dermalia and atrialia are pentactines, rarely hexactines (usually similar to each other). The pinular ray is whip-like with short lateral spines (rarely with a little amount of long spines), its rhachis thickest at base. Hypodermalia and sometimes hypoatrialia are pentactines. Amphidiscs are usually of three kinds (sometimes some of them are absent). Macramphidiscs have umbels broader than long (usually about 1/2–1/8 as long, and about 1/2–1/3 as broad, as the length of the whole spicule). Mesamphidiscs and micramphidiscs have common shape. Microhexactines sometimes are rare, they have smooth or rough, straight or curved rays.
ID Keys
See Family Hyalonematidae Diagnosis
Diagnosis References
Tabachnick, K. & Menshenina, L. L. 2002. Family Hyalonematidae Gray, 1857. pp. 1232-1263 in Hooper, J.N.A. & Soest, R.W.M. Van (eds). Systema Porifera. A guide to the classification of sponges. New York : Kluwer Academic/Plenum Publishers Vol. 2. [1238]
History of changes
| Published | As part of group | Action Date | Action Type | Compiler(s) |
|---|---|---|---|---|
| 29-Mar-2018 | 28-Feb-2012 | MODIFIED | ||
| 29-Mar-2018 | 15-Apr-2011 | MODIFIED | ||
| 12-Feb-2010 | (import) |