70 KKCKNT MAUREl'ORAKIA OK THK HAWAIIAN ISLANDS AND LAYSAN. 



cycles arc tliicUcu-d opposite tlu- pali. The septal faces are very delicately fluted, 

 and heset with numerous crowded conical yraiinlations. 



Pali tall, thin, wide, almost straight plates, with entire edores, and with delicately 

 fluted, somewhat ^rranulated faces; before all septa except the last cycle. Those 

 before the third cycle are the widest, those ))efore th.> Hrst cycle are sometimes nar- 

 rower than those i)efore the second, but it is not always possible to distinguish the 

 first from second cycle. 



Columella tei-minated by irregularly shaped papilhe, 8 in the type. 



Calicular fossa ami the whole calice shallow. 



Zwtw/%.— South of Molokai Islands and west of Lanai Island, Station 3895; 

 depth, 2r)2-i21t futhoms; bottom, coral rock; temperature of Ijottom, 47 F. 



Type.— Cat. No. 2075.5, 1'.S.N.M. 



PARACYATHUS MAUIENSIS, new species. 

 Plate VI, figs. 2, 2<t. 



Coralium atlaclied l)y an expanded base, diameter not increasing with the height, 

 transverse outline bi'oadly elliptical. Gr(>ater diameter of calice, 8 mm.; les.ser, 

 7.25 mm. Base attached to an uneven surface. Height on one side, 6.5 mm. ; on the 

 other, 10 nun. Just above the attached area the coralium is almost circular in cross- 

 section, diameter S mm. Between the base and the calice are several encircling 

 constiictlons. 



The wall is thi<'k, externally almost completely enveloped by a thick, more or 

 less corrugated epitiieca that extends to the very margin of the calice. In a few 

 places can be seen low, obtuse costic, which are subequal, or alternating in size. 

 Near the base the epitheca possesses broad, low. Hat, e(|ual, granulated costse, 

 separated by shallow, narrow intercostal furrows. 



The septa ai'e in six systems; four complete cycles in four systems, in the 

 outer halves of the two sj'stems at one end of the calice the fourth cycle is wanting. 

 The septa are straight, but the members of the last cycle seem to fuse by their 

 inner ends to i\w sides of the large pali standing before the penultimate septa. 

 Primaries and secondaries rather thick, the other septa somewhat thimier. The 

 upper margins scarcely jjroject above the upper edge of the wall, those of the first 

 and second cycles slightly the more prominent. The septal faces densely and rather 

 coarsely granulate. 



Pali in three crowns, before all septa except the last cycle. Their inner margins 

 'ying in the same curve, but the narrowest are before the first cycle, and the widest 

 before the third. In cross-section the pali are cuneiform, the thicker ends outward. 

 Their margins an^ arched above and entire; faces with sharp elevated stria; Itroken in 

 places into granulations. 



Calicular fossa gradually excavated, moderately deep. 



Columella well developed, terminated by rather tall papilhw which resemble the 

 pali before the piimary septa, but stand at a somewhat lower level, therefore the 

 cohnnellar papiihe can be easily differentiated from the pali. 



IjicnUiy.—'^ovth coast of Maui Island, Station 4098; depth, 95-152 fathoms; 

 bottom, coral sand, foraminifera, rock; temperature, 64.8 F.; 1 specimen. 



Type.—C&i. No. 20756, U.S.N.M. 



