848 PROCEEDINGS OF THE XATIOXAL MUSEUM. vol. xxx. 



II. THE BRAZILIAN ASTRANGID CORALS. 



In my Stoii}' Corals of the Porto Rican Waters" I published the 

 following paragraph: "There are three astrangids found on the Bra- 

 zilian reefs. One is Pliyllangki americana; another may be only a 

 varietal form of ^1. Kolitat'la^ but probably is a distinct species; the 

 third is an undescril)ed species, which I have named in manuscript, 

 AdraiKjtd i-atMnmL''^ Professor Yerrill cites these remarks in hi^j 

 Revised List of Brazilian Reef Corals.'-' It is scarcely necessarj^ to 

 make remarks on the PhijUangia americana^ but the two others will 

 be described. 



ASTRANGIA BRASILIENSIS, new species. 

 Plate LXXVII, fig«. .S— 6. 



Corallites reproducing by l)udding from basal stolons, spreading 

 over variously shaped objects of support, occasional lateral gemma- 

 tion. The corallites are scattered, distant, from 1.5 to -I mm., or 

 even more, between their bases. Diameter at the calice from •! to 

 4 nmi.; height of full-grown corallites about 4 nmi. Externally 

 ol)scure]y costate near the calicular edge, the costte alternating in size. 

 The lower portion of the corallites is encrusted, in some instances 

 there appears to be epitheca. 



Septa in three complete cycles with about half the niem))ers of the 

 fourth, in a calice 'I.b nmi. in diameter. This seems to be the usual 

 number in the larger calices. The primaries may be slightlv the 

 largest, the secondaries almost equal them in size, or primaries and 

 secondaries may be of practically the same size; the tertiaries are 

 smaller; the quaternaries often I'udimentary. Septal margins ob- 

 scurel}' dentate, only slightly exsert. Erect narrow paliform lobes 

 present l)efore all septa except those of the last cvcle. Sides of both 

 septa and pali granulated. Calicular fossa deep. Columellar surface 

 papillate. 



Locality. — Periperi, Bahia, Brazil. 



7}/;>^— Cat. No. 10940 U.S.N.M. Collected by Richard Rathl)un. 

 Geological Connnission of Brazil, isTC). 



Renidrks. — The })receding description is l)ased on a single specimen. 

 There are several other specimens in the United States National 

 Museum. The principal variation shown is in the height of the coral- 

 lites, which may be l)etween 1) and 10 nun. tall. When the corallites 

 are so tall the calices are somewhat larger, nearlv o mm. in diameter, 

 the septa somewhat more exsert and the costiv more pronounced. 



A. hr<(><l/l<iixis is very closel}^ related to A. sojitdi'ia (Le Suour). 

 The corallites of the former average smaller, are more scattered and 



«U. S. Fish Cominispion Bulletin for 1900, II, 1901, p. 299. 

 ^Trans. Conn. Acad. Sci., XI, liiOi', p. 1!:)4. 



