570 



ZOOLOGY OF FEET^ANDO NORONHA. 



neighbouring calices, instead o£ some vestige of interspace and 



COStcT. 



Yerrill and Pourtales noticed the alliance of the species with 

 the genera Goniastrcea and Mceandrina. In a small specimen 

 the Groniastroid appearance is striking, and the cost?e between 

 the calices are only visible at one spot. There are several rolled 

 specimens, and, as Pourtales remarked, they resemble Groni- 

 astroids very much. 



Favia anai^'as, Lamarck^ sp. 



The specimens have the usual well-developed columella, the 

 costae are very visible in one, and the fourth cycle of septa is 

 incomplete. 



Favia deformata, ^d. 4' H.^ Hist. Nat. des Corall. vol. ii. 

 p. 434. 



A somewhat worn and broken coral, very Coelorian in appear- 

 ance, and with large calices, some long and serial in appearance, 

 but really the result of fissiparity, appears to be a specimen of 

 this form, the habitat of which has hitherto been unknown. The 

 walls are close, but in many places their former separation can 

 be shown. It is a very erratic species, and better specimens are 

 required. 



A very worn specimen of the same species was also obtained. 

 These two specimens came from Kat Island. They were 

 washed up on the south-east corner with a number of Sponges. 



Section MADREPORAEIA FUNGIDA. 

 Family Plesiofungid^, Duncan. 

 Revision of the Genera of Madreporaria, Journ. Linn. Soc. vol. xviii. 1884, p. 133. 



SlDERASTR^A SIDEREA, ElUs tf" Solaud., Sp. 



This specimen, and indeed all the rolled ones besides, have smaller 

 calices than the Caribbean type, but that is the only distinction. 

 They greatly resemble Siderastrcea stellata, Verrill, from the 

 Abrolhos Eeef . 



Bemarhs. 



This little Coral fauna has the Abrolhos Eeef homotaxis, and 

 the species are fairly intermediate between those of the same 

 genera of that reef and of the Caribbean Sea. 



