"The sepia are generally 24, mh&qu&l, in three regular cycles, 
those of the first two cycle® are nearly equal in height and thick* 
ness, those of the third cycle and thinner and narrower, and gener- 
ally bend to the right and left in pair® be Join the straight septa 
of the second cycle, usually at, a point more than half-way to the 
columella, and often vary near it* The summits of all the septa ar® 
narrow and only slightly raised above the walls* The edges ar© irr 
regularly serrulate, two to four of the basal teeth being the larger. 
The sides arc distinctly granulated. The septa are all thin, but 
slightly thickened toward the wall, and all are narrowed above the 
base, so as to leave a cup-like e&lioular cavity* The columella is 
small, trabecular, papillose, and often nearly wanting. In trans- 
verse sections of some calicles it is solid, and formed by the union 
of the inner edge® of the septa, but in most it is small, porous, 
trabecular* 
"Diameter of the cal ice® $*$ to 3 in®. ; breadth of intercalieinal 
spaces, usually 1 to 2 mm*, sometimes xa 3 to 4 am. or more, near 
the base. 
"Origin uncertain., supposed to be West Indies,* Several irregular 
gibbous messes of this species, 3 to 5 inches in thickness, in the 
imer. Mur* Mow York, were found near Osprey, West Florida, cast on th® 
beach, after a storm, by R. P. Whitfield (Mo. 485). I have also ©sen 
specimens from Key West.” 
VerriXl keeps £, hyadss and 0* e xcel s& separate, with the remark, 
however, that "they may eventually prove to be or.® species.” Th© dif- 
ferences between the tw« consist in the latter possessing a much more 
solid exotheca and more developed costae. There is in the United State® 
National Museum a moderate suite of Resent specimens, and as excellent 
one of fossils. I feel convinced that the two forms are only vari- 
ations of the same species, as la the same specimen the exotheoa may 
be solid or vesicular; and the costae stay be confined to the coral lit© 
periphery or extend from one corallite to thou© of the next. Although 
Prof, Yerrill’s descriptions are* so Comprehensive as to render a new 
one unnecessary , I should like to call attention to some feature®. not 
considered in- detail by him. The ccstae seen on the surface are . not 
I 
prolongations of the distal end of the septa, they ar© only stri&iloa® 
®a the ex ©thecal surface corresponding in position with th© septa. 
