ASTRANGIA. 79 



ASTRANGIACE^J M.-Edw. & H. 



AstrangincE Verrill. 



PHYLLANGIA M.-Edw. & II. 



Phyllangia americana M.-Edw. & IT. 



Syndepas Gouldii Lyman. 

 SteUangia replanst Ducn. & Mien. 



The typical and only species of the genus Syndepas Lyman appears 

 to me identical with Phyllangia americana M.-Edw. & II., with which 

 Mr. Lyman was probably not acquainted at the time he wrote. The 

 Museum of Comparative Zoology has numerous specimens from the 

 Florida Reef and from Cumana, Venezuela ; it appears to be quite com- 

 mon in both localities. 



The paliform lobe noticed in the genus by Professor Verrill is some- 

 times well developed in this species, at other times quite absent. 



ASTRANGIA M.-Edw. & II. 



Astrangia solitaria Veurill. 



Astranaia soWaria Verrill. Bull. Mus. Comp. Zool., No. 3. 



Caryophyltia solitaria Lesueur. Jour. Phil. Ac. Nat So. I., p. 180, PI. 8, fig. 11, 1817; and 



Mem. da Mus. d'Hist. Nat., t. VI. p. 2:3, PI. 10, fig. 1. 

 Astrangia pkyltangioides ? Duch. & Mich. 



This species lias never been fully described ; it has been identified 

 by Verrill with Lesueur's species, but the characters given by the latter 

 author are so scanty that there can be no certitude of the identity, but 

 a strong probability. 



Corallites cylindrical, in loose incrusting clusters, connected by thin 

 stolons on which the costal stria- are distinctly continued. Costa' Hat 

 and broad, finely granulated. The base is generally covered with nul- 

 lipores simulating au epitheca, and covering at length the stolons. 

 Calicle circular, very deep when full grown, shallow in the young. 

 Septa thick, crowded, in four cycles ; the fourth generally wanting in 

 two or three half-systems. The primaries are considerably thicker than 

 the others, and more exsert ; all the septa are coarsely and bluntly 

 denticulated. Pali well developed, thick, and denticulated. Those 

 of the third' united to those of the second order. Columella papillose, 



