Verrill, Notes on Radiata. 537 



Paracyathus caltha Verriii. 



Paracyathus Caltha Verrill, Proc. Boston See. Nat. History, xii, p. 394, 1869. 

 Plate IX, figures 9, 9=\ 



Corallum turbinate, with an expanding base ; pedicle about one- 

 half the width of the summit. Gestae corresponding to all tlie septa, 

 prominent near the margin of the cup and dentate ; below represented 

 only by lines of granules. Calicle cup-shaped, elliptical with flattened 

 sides, the ratio of the axes as 100 : 140 ; the summit of the longer axis is 

 somewhat lower than that of the shorter. Septa in five regular cycles ; 

 those of the first and second subequal, rather broad and stout, thick- 

 ened uniformly, rounded at the summits, projecting about -02 of an 

 inch, finely granulated on the sides. The other septa are equidistant 

 and diminish regularly in width and heiglit, the last being thin and 

 narrow. Columella formed by numerous stout, styliform processes, 

 rounded at tip, not crowded. The pali are similar in size, l)ut more 

 prominent and flattened, increasing in height as the septa diminish, 

 their inner edges denticulate. They are present before all the septa 

 except those of the fifth cycle. 



Height of largest specimen -50 of an inch; diameter -45 by -32; 

 depth of cup •20 of an inch. 



Monterey, California, — J. Xantus, (Museums of Smithsonian In. 

 stitution and Yale College). 



Paracyathus ^tearnsii Verriii, op. dt., p 393. 



Coralhim wdth an expanded base, above which it is somewhat con- 

 stricted, and then expands rapidly to the edge of the broad, shallow 

 cup, which is broad-oval in form, the edge bent into slight lobes or 

 undulations. Exterior of the wall with very numerous, prominent 

 subequal, scabrous costse, which extend from the summit to the outer 

 edge of the base ; on the basal portion three or five smaller ones often 

 alternate with one more prominent ; toward the summit some of them 

 have a tendency to rise into crests ; all are covered with several series 

 of small, sharp granulations, similar to those on the sides of the septa. 

 Five complete cycles of septa, with some small ones in some of the 

 systems belonging to the sixth cycle, so that the whole number is 

 about one hundred and twenty. The primary and secondary septa 

 are considerably broader than the others, broadly rounded and some 

 what exsert at summit, narrowed toward the base and divided into 

 two or three unequal, broad, stout, paliform teeth, which are rough 

 and lacerately spinulose at summit, and covered on the sides with 

 coarse, rough granulations. The septa of the two succeeding cycles 



