A Hawaiian species of antipatharian coral previously identified as Antipathes dichotoma Pallas, 1766, is described as Antipathes griggi Opresko, n. sp. The species forms tall, bushy colonies with elongate, upright terminal branches, often arranged uniserially. Spines are conical, mostly 0.20 to 0.26 mm tall, apically bifurcated, multilobed to jagged in appearance, and covered over most of their surface with small roundish to elongate papillae. Minute secondary spines may occur on some of the thicker branches. Polyps are 1 to 1.6 mm in transverse diameter. The species resembles A. fruticosa Gray in branching pattern, size of spines, and presence of secondary spines but differs in morphology and density of the spines (thicker, more crowded primary spines and fewer secondary spines in A. griggi). Other related species differ from A. griggi in having more widely spreading and irregularly arranged branches, no secondary spines, and either smaller spines with fewer apical lobes (A. curvata van Pesch, A. arborea Dana, and A. galapagensis Deichmann) or larger spines with the apical lobes arranged in a somewhat coronate pattern [A. spinulosa (Schultze) and A. lentipinna Brook].


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