DESCRIPTIONS OF SPECIES. 137 



The young calices may have diameters of 2.5 by 3 mm. The septal 

 aiTangement seems to be on a basis of four complete cycles. In some calices 

 there are thi-ee complete cycles with about half the members of the fourth 

 cycle present; in other calices there are four complete cycles and a few- 

 members of the iifth cycle. The septa are alternately larger and smaller, 

 but not all the larger reach the columella. In some instances every alter- 

 nate septum is continued to the columella, but in other instances it is the 

 fourth septum that is thus prolonged. The members of the highest cycles 

 fuse to the sides of those of the next lower cycles. The septal faces are 

 granulate; the margins are dentate. The dentations are rather large, and 

 are not very sharp, sometimes having more the appearance of crenations. 

 SynapticuliB are present, usually are situated nearer the columella than the 

 wall. Dissepiments present, but scanty.- Calicular fossa rather deep. 

 Columella well developed, very vesicular. 



Locality. — Thi'ee-quarters of a mile above Vinces Bluff, Saline River, 

 Cleveland County, Arkansas. 



Horizon. — Jacksouiau stage. 



Types. — In the United States National Museum are two colonies and 

 several separate corallites collected by Prof G. D. Han-is; in the Wagner 

 Free Institute of Science is the specimen represented by PI. XIV, 

 figs. 10, 10a. 



This species is so different from the two preceding species that 

 critical remarks are unnecessary. It probably should be placed in the 

 subgenus Phyllangia (genus of Milne-Edwards and Haime). 



ASTRANGIA WILCOXENSIS Sp. nov. 



PI. XIV, figs. 11 and 11a. 



1894. Ccvspitose astnean Vaugban. Kept. geol. Coast. Plain Ala. : Ala. Geol. Survey,. 

 1894, p. 248. 



A poorly preserved specimen of an Astrangioid coral, whose method of 

 growth is in small tufts, is in the collection of ^Ir. T. H. Aldi-ich. Repro- 

 duction appears to be by budding around the base of a central corallite. 

 The corallites are rather tall, 6 mm.; externally marked by distinct, subacute, 

 granulated costaj, corresponding to' all cycles of septa, and alternately large 

 and small. Corallite wall sti-ong. Calices elliptical. There are four com- 

 plete cycles of septa in six systems, and a few members of a fifth cyole. 



