BULLETIN 59, UNITED STATES NATIONAL MUSEUM. 67 



The wall externally is rather <,'-li.stening, resembling in appearance that of 

 I'laheUum or Hhizatnichux. Costa' lacking in 3-oung speeimens, ))ut well developed 

 near the calice in mature specimens. For instance, there are none in specimen No. 1; 

 faint costse are appearing around the edge of the calice in No. 2; in No. 3, the^' are 

 well developed for a distance of 1 to 2.5 mm. below the upper edge of the wall, cor- 

 responding to the first, second, and tiiird cycles of septa, but not to the fourth. 



Septa thin and distant, in four complete cycles, becoming progressively more 

 cxsert with increasing age. The first and second cycles about e([ual in prominence; 

 tiio third cycle less prominent; the fourth corresponding to slight notches on the 

 calicular margin. In young specimens the members of the first cycle are slightly 

 longer than those of the second, but later these two C3^cles become e(jual in size; the 

 members of the third are considcral)ly shorti>r and thinner; those of the fourth 

 cA'cle are rudimentary, very short and delicate, and nmst be looked for carefully to 

 be seen, but the cycle is complete, even on the lower, broken end of spt^'imen No. 3. 

 The septal faces are beset with ver}' minute granulations and tliei-e are faint stria>. 

 The inner margins of the larger septa are slightly undulated and fall abruptly to the 

 bottom of a deep narrow calicular fossa. 



Columella a deep seated, very thin, delicate lamella, with a gently curved ui)per 

 tnlge. It is best shown in specimen No. 1. It is distinct, but was difficult to 

 discover, in No. 2. Apparently it has been bi-oken and has fallen out of No. 3. 



The corallum is usually reddish brown in color, with th(> inner third of the larger 

 .septa white. Specimen No. 1 is whitish witli some brownish l)lotches. 



Loral itles. — 



Pailolo Channel, between Maui and Molokai islands: Station 3886; depth, 148 

 fathoms; bottom, pebbles and rock; temperature of bottom, 65^ F. 



Ukula Point, vicinity of Kauai Island: Station 3999: depth, not definitely given. 

 7-1-iS fathoms. (Specimens Nos. 1 and ?>.) 



Votypes.—lHos. 20731, 20732, U.S.N.M. 



Family CARYOPHYLLIID.E Verrill. 



Genus DESMOPH YLLUM Ehrenberq. 



DESMOPHYLLUM CRISTAGALLI Milne Edwards and Haime. 



I'late VII, figs. :i, :^«, :s/.. 



1848. Desmophylldm crwfa^nWi Milnk Kdwakds ;inil II mmk, Ann. Sci. Xat., ;iit'ine s('r.. Zoo!., L\, 



p. 25.3, pi. vu, fig. 10. ■ 

 1857. DeitindphijUiuii rrlMiujalli 'Mil'se Kiiwahds and H.mme, Hist. Xat. Corall., II, p. 76. 

 1873. Desmophi/lhitn cristayiiUi l)cNe.\N, Tran.«. Zool. Soc. London, VIII, p. 821. 

 1878. Desmophyllum crisltu/(ill! PovRTALKs, Bull. Mas. Conip. Zool., V, Xo. 9, p. 2015. 

 1880. Desmophyllum crislar/alli PocRT.\Lfes, Bull. Mus. Comp. Zool., VI, No. 4, p. 106. 

 1902. Desmophylhim criiitngiiUi Alcock, Deep Sea Madrepor., Siboga Exped., p. 28. 

 1904. Desmophyllum crhtagatli v. M.\HENZELi,Eii, 8tein-KoraIlen, Valdivia Kxpod.. p. 267, pi. xv, 



figs. 2, 2n, 2t. 



Remarks on the sytionymy. — Duncan " refers D. cumingl and J), costatum Milne 

 Edwards and Haime to the .synonymy of I), cristagalli. Alcock* adds the names of 



" Trans. Zool. Soc London, VIII. 1873, p. .321. ''Deep Sea ^ladrepor.. SiUoga i;xpe<l., 1002, p. 2:^ 



