INDIf\Nf^ Pf\Lfl&ONTObOGY. 



FAVOSITES GLOBOSUS, N. Sp. 



Platk 3, Figs. 3-4-5. 



Tubes rounded, polygonal, unequal in size, from one to three millimeters 

 in diameter. Tube walls moderately stout. Longitudinal furrows not very 

 conspicuous. Pores moderately large, from one to three rows on a side, situ- 

 ated below a spine like projection. Diaphraghms stout, oblique, to suit the 

 peculiar growth of the coral, not very much crowded, and not so complicated 

 with squama as in some other species. Grows parasitic on crinoid stems, and 

 sometimes found attached to fragments of other marine organisms. Globular 

 or sub-pyriform in shape; varying in size from ten to sixty millimeters or more 

 in diameter. 



The large round tubes, the oblique diaphraghms, not so complicated with 

 squamae as some other species, parasitic in habits, globular or sub-pyriform 

 shape, makes this easily recognized from all other species. 



Found in the upper Devonian (Hamilton group), one and a half miles 

 North West of Charlestown, Indiana. Now in the collection of the author. 



DIPHYPHYLLUM UNI CUM, N. Sp. 



Plate 3, Figs. 6-7-8-9-10. 



Corallum simple, elongate turbinate, straight or gradually curved, distorted 

 or gesiculated. Acute at the base of attachment. Gradually or rapidly in- 

 creasing in diameter to the calyx. Length varying in diiferent individuals 

 from twenty to forty millimeters or more. Calyx somewhat bell-shaped, from 

 ten to fifteen millimeters in diameter. Depth ten to twelve millimeters. Num- 

 ber of lamella forty-eight, in the circumference of a calyx ten millimeters in 

 diameter; alternating in length, rounded and equal in size at the margin, 

 from three to four millimeters nearly flat, then abruptly slopes to the bottom of 

 the calyx, where the short ones gradually terminate ; the longer ones continue 

 until they "reach the vertical wall of the horse-shoe shaped area, situated in the 

 center of the calyx. The smooth oblique space, inclosed in the vertical wall, 

 is from one to three millimeters in diameter. Denticulations tine, distinct, ten 

 in the space of five millimeters. 



Found in the upper Devonian (Hamilton group), near Charlestown, Indi- 

 ana. Now in the collection of the author. 



MICHELINIA MINUTA, N. Sp. 



Plate 3, Figs. 11-12. 

 Corallum small, composite, pyriform in shape, not exceeding fifteen milli- 



