380 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxviii. 



inuniuM- to tliiit of tho ooiuis Fini(/!(t — by the breaking off of disks 

 from iiii iittached stock. At tii'st there is one large central polyp with 

 radijiting septa; then, as growth jiroceeds, a nuinl)er of calicnlar fossa' 

 appear ai-ouiul this. On becoming free the central polyp may perhaps 

 j)ersist or, as in my specimens, may l)ecome indistinguishable from 

 the daughter polyps, the septa gradually losing their regular radiating 

 arrangement in the center of the colony." 



1 have examined specimens of five of the compound genera of the 

 Fnngid^.^ hoping to gain more information concerning young stages, 

 and obtained the following results: 



Ilaloiiiltra j^kilijjpl/iensis Studer, young. Shows a ver}" distinct 

 scar of detachment. 



Zoopilxs echhudus Dana. (Probably type specimen.) Shows a very 

 distinct scar of detachment. This germs is scarcely more than a Halo- 

 lii'drd with ver}^ few calices, and these are near the central corallite. 



Onjpt(ilniv'ui tal]>lrtii (Lamarck). There is some suggestion of a 

 detachment scar, but the evidence is not positive. 



Herpetolitha I'linax (Esper) and //. stricta Dana. Evidence for 

 detacjhment scar very vague." 



LUJuictmia galerlform!s (Dana) (one of Dana's specimens). P'ound 

 no evidence of a detachment scar. 



Sufficient evidence, of c^:>urse, is not presented to warrant a conclu- 

 sion, but there is at least a suggestion that the free coralla of all of 

 these corals may originate in a manner similar to that of Fwiujla. 



Genus FUNGIA Lamarck. 

 1801. Pimii'ia Lam.xrck, Syst. Anini. .sans Vert., p. 869. 



Original generic dhtgnoi^is. — ""Corallum stony, free, orbicular, or 

 hemispherical, or oblong, convex, and lamellate above, with a furrow 

 or depression in the center, concave and rough below. 



'•A single lamellate, subproliferous star. Lamelhe dentate or spi- 

 nose lateralh'.'' 



Tyjye species. — Fangia agariciforniis Lamarck = JA/^//'. agaricites 

 Linn^us.'' Lamarck oi'iginally referred six species to the genus, 

 namely : 



1. Ftmgia «garlriforiin.^ ] j am \rck= Madrepora fungid's Lixn.eus. 



2. Fangia scutaria La.m.vkck, l)ased on Seba, Mus., Ill, i)l. cxii, figs. 28, 29, 80. 



3. Fangia limacinn IjXMARCK—Madreporapileui^ Ellis and Solander, pi. xlv. 



« Since the above was written, I have unpacked a box of Fungid corals from the 

 east coast of Africa, kindly sent to nic for determination by Dr. Charles Gravier, of 

 the Museum d'Histoire Naturelle, Paris. There is a good suite of Herpetolitha foliosa 

 Ehrenberg. The young specimens show as distinct a detachment scar as any species 

 of Fangia. Therefore the young of Uerj>elolitha is a trophozooid, and the adults 

 are formed ))y further growth of freed anthoblasts, or anthocyathi. 



'^ See Doderlein, Senckenb. Naturforsch, Gesellsch, Abhandl., XXVII, 1902, pp. 

 136-156, pi. Ax-xxv. 



