14 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 16 



Class AnTHOZOA 

 Order SCLERAGTINIAE 



Family Seriatoporidae 



Genus MADRAGIS Milne Edwards and Haime 



Madracis Milne Edwards and Haime (1849), Comptes Rendus Acad. 

 Sci. Paris, vol, 29, p. 70. 



Genotype: Madracis asperula Milne Edwards and Haime. 



Madracis asperula Milne Edwards and Haime (?) 

 Plate 1, figs. 2a, b 



Madracis asperula Milne Edwards and Haime (1850), Ann. Sci. Nat., 

 ser. 3, vol. 13, p. 101, pi. 4, figs. 2, 2a; Pourtales (1871), Mem. 

 Mus. Comp. Zool., vol. 2, no. 4, pp. 27-28, pi. 7, fig. 4; (1880), 

 Bull. Mus. Comp. Zool., vol. 6, no. 4, p. 108. 

 Axhelia asperula (Milne Edwards and Haime), Vaughan (1902), Bull. 

 U.S. Fish Comm. (for 1900), vol. 20, p. 294, pi. 1, fig. 4; pi. 

 17, fig. 2. 

 Description of hypotype: Corallum ramose, branches terete, slender, 

 up to 2.5 mm in diameter, diverging at an angle of 120° ; calices shallow, 

 oval to oblong-oval, up to 1 by 2 mm in diameter; calices at ends of 

 branches with high thecal rims, other calices not elevated ; longitudinal 

 axes of calices oriented with axis of branch; calices in roughly linear 

 rows, about 3 rows to a branch; calices averaging two-thirds to once the 

 width of a calice apart, somewhat farther apart at base of branch ; septa 

 10 in number, equal, interspaces twice as wide as thickness of septa, no 

 evident rudimentary septa in interspaces, although wall may bulge slight- 

 ly and some costal development may be present; outer ends of septa 

 slightly narrower than inner ends, at junction with wall of corallite 

 becoming very exsert, producing a high, thin, flat spine with the inner 

 margin concave and dentate ; coenenchyma covered with similar processes, 

 as tall as the septal spines, which vary from narrow and pointed to flat 

 and truncate ; these spines may reach a length of as much as 0.8 mm and 

 are irregularly covered with pointed granules as are the septal faces, 

 columella, and inner wall of corallite ; the coenenchyma is relatively free 

 of these granules ; very faint costal ridges may be present, sometimes 

 more apparent where rudimentary septa might be; inner ends of septa 

 widen to form a very large columella one-half to three-fourths the width 

 of the calice, from which projects a pointed, flattened style, thick at the 



