TRENTON LIMESTONE. 
79 
Genus STELLIPORA. 
[ Greek, oVsXXa, a star, and tfopa, pore.] 
Character. Coral consisting of a thick expanding crust, apparently attached to some other 
marine body ; surface with numerous star-shaped prominent elevations ; stars composed of 
4 to 9 strong elevated rays, the upper edges of which present numerous elevated points or 
pores. 
This peculiar coral approaches nearer to the Anthelia, than to any other genus re¬ 
presented in works within my reach. The stars have not the distinct circular centre re¬ 
presented in the figure of M. de Blainville, but in other respects they correspond very 
nearly. 
120. 1. STELLIPORA ANTHELOIDEA. 
Pl. XXVI. Figs. 10 a, b, c . 
The specimen, which is a fragment only of a larger thick crustaceous expansion, presents 
upon its surface about ten perfect star-shaped elevations, with remains of several others 
upon the fractured edges of the specimen. These stellated elevations are irregularly dis¬ 
posed, and not of uniform size or number of rays; the smaller having the fewer rays, and 
appearing to be near the margin of the coral. The intermediate space is almost smooth, or 
finely granulated. 
For this unique and very interesting specimen, I am indebted to Luke Wilder, Esq. of 
Lowville, Lewis county, whose zeal and discrimination have enabled him to collect a very 
fine cabinet of the fossils of the Trenton limestone. This coral is associated with fragments 
of two or three species of Trilobites, Orthis testudinaria , Chcetetes, Stidopora , and the last 
noticed species of Retcpora ? 
Fig. 10 a, represents the fragment, with the prominent star-form cells of the natural size. 
Fig. 10 6. Three of these stars enlarged, showing points or pores upon their upper surface. One of these 
stars has a slightly irregular form in the centre, as if composed of parts of two : this is true 
of several others. 
Position and locality. In the central part of the Trenton limestone. Lowville, Lewis 
county. 
121. 1. GRAPTOLITES AMPLEXICAULE. 
Pl. XXVI. Figs. 11 a, b. 
Compare Graptolites foliaceas. Portlock, Geol. Report of Londonderry, Tyrone, &c., pag. 320, pl. JO, fig. 9 a, b, c. 
s Stipes slender, linear, elongated, surrounded by small sheathing folioles or scales, giving 
it a serrated appearance ; folioles small, acute. 
