142 RKCENT MADRErORARIA OK THK HAWAIIAN ISLANDS AND LAYSAN. 



groiipiii.tr ill loiiciMitrir curves, sevonil v.iVwes stiiiuliny near together in succeeding 

 curves. Tlie calices in these curves arc boiiiuliMl below liy a ridge, and usuallj- on 

 the lower sidii of each caliee then; is a tooth-like projection. Isolated calices very 

 connnonly have the lower side thickened, eieviited. and subacutely terminated. The 

 calices arc small, 2 mm. or less in diameter. 



The under side of the coralluiii is tiiiely costate; the costa are granulated, low, 

 acute along the summit, their hases touching, equal or slightly alternating in size. 

 The interior of the tubes, descrilied in the preceding remarks, is the morphological 

 ec|iiivaleiit of the lower surface of the corallum. Septo-co8t» tine, usually thicker 

 tiian the intervening space; edges acute and microscopically serrate; sides very 

 minutely and very densely granulated; perfoi'ations never or rarely present. 



Sejita about 14, subequal; there may be alternation in size among some. The 

 inner portions of the margins often dentate; faces minutely granulate. Synapticula 

 and dissepiments, if jm^sent, are rare. 



Calicuhir fossa very small, aliout O.lo mm. in diameter, and .shallow. 



Columella w(>ll developed, tilling practically the whole bottom of the caliee; 

 appears to be composed of several more or less twisted pieces that have fused. 



Lofdlitij. — Auau Channel, between Maui and Lanai islands. Station 3.S76; depth, 

 28^3 fathoms; bottom, sand, gravel; temperature, 74^ F. ; about 2n specimens. 



CfeiSyjye-s.— Cat. no'. 2()8!»1, U.S.N.M. 



Genus STEPHANARIA Verrill. 



1866. Slephanocora Verrill, Proc. Bost. Soe. Xat. lli-st, X, p. ;^30 (not Elirenberg, 1834). 



1867. Stephannria Verrill, Trans. Conn. Acad. Sci., I, p. 340. 

 1870. Stiqihanaria Verrill, Trans-. Conn. Acad. Sci., I, p. 54.5. 

 1884. Stephatmria DvNCAS, Jour. Linn. Sec. London, Zool., p. 160. 

 1886. Stephanaria Quelch, Reef Corals, Challenger Kept., p. 129. 



Description. — The description by Verrill in 1870 is as follows: 



Coralla compound, consisting of irregular, .fhort lobe-like branches. Cells moderately large, with 

 two or three cycles of septa which are denticulate on the edge, well developed, and mostly confluent 

 with those of adjacent cells. Walls indistinct or wanting, the divisions between the cells indicated 

 only by small, granular points, which sometimes interrupt the septa of adjoining cells. Columella 

 paj)illose. I'aliform papilki' liefore all the jirincipal septa, the inner ones becoming confounded with 

 the columella. 



STEPHANARIA STELLATA Verrill. 



Plate XLIII, fig.s. 2, 2a, 2b (one of Verrill's types) , 3, 3a (from Pukoo, Molokai). 



1866. Stephanocora steUnIa- Verrill, Proc. Bost. Soc. Nat. Hist., X, p. 330. 



1870. Stephanaria stiilata Verrill, Trans. Conn. Acad. Sci., I, p. 545, pi. ix, figs. 4,4a. 



1886. Stephanaria steltata QvELCH, Reef Corals, Challenger Rejjt., pp. 129, 179. 



De-teription. —Verrill's description published in 1870 is as follows: 



Coralla forming rounded clumps of short, irregularly lobed and contorted branches, which are 

 unequal in size and form; sometimes nearly simple and angular, with a large cell at the top; at other 

 times, even on the same clump, having the summit very much exiiandcd, so as to form flattened, con- 

 torted lobes, with acute summits and lateral crests, or even meandriniform lobes. The branches are 

 usually about an eighth of an inch distant, sometimes more, the aides covered with rather large, star- 

 like, shallow cells, one, or several, larger than the others often terminating the branches, which appear 

 to increase by the upward extension of one of the edges of these cells by submarginal budding. Septa 



