Art. II.] Bownocker, Comifevous Rocks of OMo 19 
pheodonta concava, H., Stropheodonta demissa. Con., Stro- 
pheodonta hemispherica. H., Stropheodonta perplana. Con., 
Terebratula sullivanti. H. 
Lamellibranchiata. Conocardium cuneus. Con., Modio- 
morpha concentrica (?) Con. 
Gastropoda. Loxonema pexata. H., Murchisonia desid- 
erata. H., Platyceras dumosum. Con. 
The rock at this locality is the most fossiliferous of any of 
this age in the state. Often it becomes a true coquina. The 
fauna is quite different from that found at other points, not so 
much because of the different species found, but because of 
those that are here the common ones. These are almost with- 
out exception comparatively rare elsewhere. Further, the most 
characteristic species here vary from their normal forms, while 
two species that are usually common elsewhere, Leptaena rho 7 n- 
boidalis and Atrypa aspera have not been found at all. 
The fauna is characterized by the presence of the two 
Spirifers, 5 . macrothyris and .S. manni. The former is much 
larger than elsewhere in Ohio, having a width of more than 
3 3-4 inches and a length of more than 2 5-8 inches. Twelve 
broad, flat ribs were counted on one side of the sinus. The 
forms are not as large however, as some that are figured in the 
New York reports. The species N. manni is wider than usual 
in proportion to its length, its area is lower and more curved, 
and its ribs more numerous. Fifteen of the latter were counted 
on one side of the sinus. 
The coral, Favosites eminonsii is found here in large blocks 
and the brachiopod Meristella nasnta is more abundant than 
elsewhere. 
Gastropods are rare and cephalopods absent. 
The species Michelinia cylindidca and Ajnphigenia elongata 
are here reported for the first time in Ohio. 
The presence of Spinfera acuminata and Platyceras dumo- 
sum indicates that the strata belong a short distance below the 
bone-bed. This is further shown by the absence of cephalopods 
and rarity of gastropods. The absence of Eridophylliim vcr^ 
