NO. 1526. CORALS FROM FRENCH SOMALILAND—V AUG HAN. 253 



Calices circular or subolliptical, shallow, about 1 mm. deep, diame- 

 ter from 8 to 8.5 mm., an occasional a))normal calice, 5 mm. The 

 margins elevated about 1 mm. The free portion of the corallites 

 below the calices is somewhat swollen and strongly costate, the costse 

 alternating in thickness and prominence, the larger prolonged and 

 meeting those of the adjoining corallites. Distance between calices 

 from 1 to 2.75 mm., usually about 2 mm.; the distance apart is less 

 than the diameter. 



The septa normally form three complete cycles, occasionally a few 

 quaternaries; primaries and secondaries stout, equal or subequal, and 

 joined by wide prominent pali to the columella. The tertiaries are 

 somewhat thinner, bear no pali, reach a little less than half the distance 

 from the wall to the columella and nearly alwa3^s have their inner ends 

 free. All of the septa are thicker in the thecal ring and have costa?, 

 which have alread}^ been described, corresponding to their distal ends. 

 The margins are finely dentate, somewhat elevated, arching above the 

 edge of the wall; primaries and secondaries more pi'ominent than the 

 tertiaries. Septal faces minutely and densely granulate. 



The pali are thick, wide, equaling in width the length of the septa, 

 prominent, with an arched, finelv dentate upper margin. They form 

 a single crown, occur before the primaries and secondaries, which they 

 join to the columella. Their faces granulate. 



Thin endothecal dissepiments present; a coarser, vesicular, highly 

 developed exotheca occurring between the costte. 



Columella well developed, rather compact, bearing several papilhe 

 on its upper surface. 



Remarks. — In those calices in which quaternaries are present, one 

 or more of the tertiaries becomes elongated, paliferous, and fuses to 

 the sides of a septum belonging to a lower cycle or extends to the 

 columella. A few much enlarged calices have more numerous septa. 

 Asexual reproduction is usually by budding between the calices, or 

 by peripheral gemmation around the edges of the corallum, but among 

 the abnormally large calices tission occurs. 



Mr. J. Stanley Gardiner has compared photographs of this specimen 

 and my description with his specimens from Minikoi and Goidu, and 

 writes me that they are the same. 



Genus CYPHASTREA Milne EdAA^ards and Haime. 



CYPHASTREA FORSKALIANA (Milne Edwards and Haime). 



Plate XIX; plate XX, figs. 1, 2; plate XXII, figs. 1, 2, ;^. ( Plate XIX, plate XX, 

 rig. 1, and plate XXII, fig. 2, are of one specimen; plate XX, fig. 2, and plate XXII, 

 figs. 1, 8, are of another. ) 



1850. SoJmasfrea fomkaliana Milne Edwards and Haime, Ann. Sci. nat., 8 ser., 



Zool., XII, p. 123. 

 1904. Ci/phadnra forKkaeluna (tardinek, Madrepor., INlaldlve and Laccadive 

 Archip., U, p. 778. 



