538 Verrill, JVbtes on Radiata. 



are successively narrower, thinner, and less exsert, with similar but 

 smaller, rough, paliform teeth. The septa of the fifth cycle are nar- 

 row and destitute of pali. Columella small, papillose, the papillae 

 numerous, slender, prominent, lacerately spinulose at summit. 



Height "60; diameter of narrowest part "38 by "50; diameter of 

 cup '50 by -72 ; depth of cup '25 of an inch. 



Monterey, California, — Robert E. C. Stearns. One specimen. 



Paracyathus humilis Verriii, sp. nov. 



Corallum small, cylindrical, about as wide at base as summit. Wall 

 thin, feebly costate, except near the margin of the cnp, where the 

 costfe become thinner, more elevated, and granulous. Calicle rather 

 shallow, with a sunken center. Columella small, composed of rather 

 open, contorted processes, with an irregular, papillose surface. Septa 

 in four cycles ; the primaries and secondaries subequal, with the inner 

 edge perpendicular and the summits broadly rounded and considera- 

 bly exsert ; those of the third and fourth cycles much thinner and nar- 

 rower, and very little exsert ; all the septa have their sides strongly 

 and roughly granulated. Pali prominent and rather slender, subequal, 

 a few of them divided into two parts, most of them with irregvilar 

 sides from which are developed small rough lobes, projecting in vai'ious 

 directions. There are no pali in front of the se])ta of the fourth cycle. 



Height of the largest specimen '20; breadth '22; depth of calicle 

 •07 ; the primary septa are '06 broad and project '05 ; diameter of the 

 columella '06 of an inch. 



Pearl Islands, — F. H. Bradley. , 



BathycyathuS Edw. and Haime. 



Bathycyathus M. Edw. and J. Haime, Ann. des Sci. naturelles, 3^ ser., ix, p. 294, 

 1848; Coralliaires, ii, p. 22, 1857. 



Corallum simple, elongated, attached by a broad base. CostiB fine, 

 close, and simple. Calicle elliptical, very deep. Columella slightly 

 developed, composed of irregular processes. Septa well developed, in 

 five cycles (in the known species) ; those of the last cycle more devel- 

 oped than those of the preceding one, towards which they closely 

 approach exteriorly; primai'ies and secondaries about equal. Pali 

 narrow and elevated, in a single circle around the columella. 



Two species of this genus, besides the following, are known : 

 B. Indicus Edw. and H. is from the Island of Juan Fernandez, at the 

 depth of 80 fathoms ; B. Sotoerhyi Edw. and H. is from the upper 

 Cretaceous green-sand, Wiltshire, England. 



