dcsimg

Comprehensive Description

provided by Smithsonian Contributions to Zoology
Paracyathus montereyensis Durham, 1947

Paracyathus montereyensis Durham, 1947:34–35, pl. 2: figs. 10, 19.—Durham and Barnard, 1952:11.—Austin, 1985.—Bythell, 1986:18.—Cairns et al., 1991:47.

DESCRIPTION.—Holotype 6.03 mm in circular calicular diameter and 8.4 mm in height, attached by a thick pedicel 4.6 mm in diameter that expands into a broad, thin base. Costae coarsely granular and light brown in color. Septa decamerally arranged in three cycles plus 3 pairs of quaternaries: 10:10:20:6 = 46 septa. Primary septa about 1 mm exsert and 1.6 mm wide, with straight to slightly sinuous, vertical inner edges. Inner edges of primaries separated by a narrow notch from slender pali, each about 0.4 mm wide. Secondary septa less exsert and about two-thirds width of primaries, each bordered internally by a robust palus about 0.6 mm wide and greatly thickened on its edge adjacent to the notch separating it from its corresponding septum. In addition to being wider, these pali reach higher in the fossa than the Pl and are slightly recessed from the columella, the 20 paliform lobes together forming two crowns distinguished by size, height, thickness, and position. Three sectors bear pairs of rudimentary quaternary septa. Within the crowns of pali is a papillose columella composed of 12 slender elements.

The larger specimen (Alb-2888, USNM 92604, Plate 7g,h) from off Oregon measures 11.1 × 9.7 mm in calicular diameter and 12.8 mm im height and also is brownish in color. Its septa are decamerally arranged in 3 cycles, with 1 additional pair of quaternaries, for a total of only 42 septa.
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cc-by-nc-sa-3.0
bibliographic citation
Cairns, Stephen D. 1994. "Scleractinia of the temperate North Pacific." Smithsonian Contributions to Zoology. i-150. https://doi.org/10.5479/si.00810282.557.i

Biology

provided by World Register of Marine Species
azooxanthellate

Reference

van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO).

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cc-by-4.0
copyright
WoRMS Editorial Board
contributor
Jacob van der Land [email]

Depth range

provided by World Register of Marine Species
75-146 m
license
cc-by-4.0
copyright
WoRMS Editorial Board
contributor
Stephen Cairns [email]