ZOOLOGY OF FERNANDO NORONHA. 
569 
Remarks. 
Of the present collection, it may be stated that the facies is 
West-Indian. Chondrilla phyllodes, Sdt., has as yet only been 
chronicled by that author, and that, too, from the “ Antilles ” 
(Gtrundziige Spong.-F. atlantisch. Gebietes, p. 26). “ Poly- 
therses ” was the name given by Duchassaing and Michelotti 
to this transformed, sponge-like body which they dredged in the 
Caribbean Sea, and whose constituent parts have been above 
noticed. Both sorts of the Officinal Sponge, viz. the “Best 
Turkey ” and the “ Honeycomb ” of Commerce, are plentiful, as 
they are in the West Indies generally. The Calcisponge, 
Leuconia sacculata , is a new species. 
MADREPORARIA. 
By Prof. P. Martin Duncan, M.B. (Lond.), F.B.S., &e. 
Section MADREPORARIA APOROSA. 
Family Astejidj, Ed. <Sf PL. 
Subfamily Astreide reptantes. 
Astrangja solitaria, Lesueur, sp., Verrill, Bull. Mus. Comp. 
Zodl. No. 3 : Pourtales, 1871, 111. Cat. Mus. Comp. Zool. p. 79. 
A specimen much covered with Nullipores. The corallites 
smaller than the Florida types, and the so-called “ pali ” not 
united before the second and third cycles of septa. The form is 
allied to Astrangia Dance and to A. Michelini. It may be con- 
sidered as a small variety of the Floridan species. 
Subfamily Astreide cespitose. 
Mussa, sp. — A worn specimen of a spiecies. 
Subfamily Astreide agglomerate fissiparantes. 
Fayia conferta, Verrill, 1867, Trans. Connect. Acad. vol. i., 
in JPartfs Collection of Corals from the Abrolhos Beef. Brazil, 
p. 355 (1868). 
This species is remarkable for its elongated calices due to 
fissiparity, and for their closeness. Often a ridge separates the 
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