BULLETIN 59, UNITED STATES NATIONAL MUSEUM. 



133 



97 



FUNGIA OAHENSIS Doderlein. 

 Plates XXXIIl, XXXIV." 



1901. Fungia oahensisVovERLEi^f, Zoolog. Anzeig., XXIV, p. 357. 



1902. Fnttj/ia oahensis Doderleix, Sonckonb. naturfora. Gesellsch., Abhandl., XXVII 



[il. IX, tigs. 3-5. 



The following is a translation of the description of this .species published in 1902: 



Disk oval, tlecidecily thick and lieavy, very strongly arched above, rather flat below. On the 

 central soHd part of tlie under side are irregular, large liiimps; tlie outer portion is costate, ribs equal, 

 prominent, there are some perforations and slits; the humps and the ribs bear short spinules and 

 graiudations of equal size. Septa of equal height, somewhat thickened, with sharp edges, very finely 

 toothed, straight or very irregularly sinuous. Oral slit covered by the overreaching septa. Margin 

 of the ilisk much lobed. Attains a length of about 130 mm. 



Occurrence of the specimens before me: Sandwich Islands, Oahn (Mus. Berlin); ? .laluit (Mua. 

 Berlin). 



Both of the large specimens before me from Oahu agree completely. They are oval, very thick, 

 the under side rather flat, the upper side arched high. 



The under side of these specimens is unusually striking; the central portion is covered by a great 

 number of round humps, more or less sharply set off one from another, their diameter, 6-15 mm. 

 This humpy middle area is solid and sharply di\ided from the marginal area, in part by a deep furrow. 

 The marginal area, whose width is about half a radius, Ijears well-developed, somewhat crowded, equal 

 l)rominent ribs, which usually end suddenly at the margin of the central area; between them are some 

 perforations and slits. Furthermore, the entire marginal area is divided by incisions of greater or less 

 depth into a great number of lobes, such, for exanqile, as are present in Fungia Rculariu, but are not 

 there developed with such sharpness. 



The whole lower surface, both the ribs taken collectively and the humpy middle area, are uni- 

 formly thickly covered with short spinules or granulations of somewhat similar size, which are lilunt 

 or pointed and in part are distinctly granulate, but frequently appear smooth. 



The septa as a whole are of equal height from the margin of the disk, therefore appearing rather 

 crowded. The smaller septa drop suddenly and steeply toward the center, oidy very exception- 

 ally is a very weak tentacular lobe previously developed; the neighboring high septa, however, often 

 make at this place a small outward flexure through which a sinuous but not regular curve of the .septa 

 is brought about, somewhat recalling /•'. nciituria. .\s in F. .^nitaria, one flnds at most between each 

 two tall septa only the inner and very thin adoral p<jrtion of a .small septum. 



The tall septa are somewhat thickened, but throughout their courses [lossess acute edges. 

 The seiital margins are very finely, but relatively deeply, and in places almost lacerately, dentate; 

 about 15-20 teeth to 1 cm. 



The septa from both sides project so near together over the oral furrow that the mouth is 

 entirely covered. 



After this follows a description of the specimen from Jaliiit. It contains .-ioine 

 interesting- facts, but as the characters of the species have been given in the trans- 

 lation, the remarks on that specimen, whose identification is doubtful, are omitted. 



" Figures from photographs kindly furnished by Professor Diiderlein. 



