117 Morgan Expeditions. 
fect specimens, preserving the shell, may show it to be dis- 
tinct from that species. 
From the Devonian sandstone of Ereré, Prov. of Para, 
Brazil; associated with Spirifera Pedroana, etc. 
Genus BELLEROPHON, Montfort. 
Bellerophon Morganianus, sp. nov. 
Shell of small to medium size. subglobose, with the umbilical openings 
small but rather deep. Body volution generally somewhat broadly flat- 
tened along the back, sometimes moderately rounded and curving abruptly 
to the umbilicus. It increases rapidly in size toward the aperture, where 
it expands quite abruptly, making the aperture lirge and apparently 
transversely sub-elliptical in outline. Surface covered with minute, 
rounded, transverse, parallel, raised lines, which first curve slightly for- 
ward from an indistinct, median dorsal band, and then extend nearly 
directly to the edge of the umbilical openings. Of a nearly perfect speci- 
men of medium size, the greatest length from the outer edge of the aperture 
- is about 17 ™™; sinistro-dextral diameter of aperture of same specimen, 
about 19 ™™, 
This Brazilian species of Bellerophon appears to be closely 
related to B. leda of Hall, Hamilton group, New York, and 
is of about the same size as that species. The body volu- 
tion of B. Morganianus is, however, generally larger where 
it commences than is the case in B. leda, and the revolving 
raised lines are entirely wanting in the former species. 
Obtained in great abundance from the Devonian sandstone 
of Ereré, Prov. of Para, Brazil; associated with Spirifera 
Pedroana, ete. 
Dedicated respectfully to Mr. Edwin B. Morgan, of 
Aurora, N. Y. : 
Bellerophon Coutinhoanus, sp. nov. 
Shell rather small, subglobose, trilobed. The outer volution increases 
rapidly toward the aperture, and is divided into three longitudinal lobes, 
of which the middle or dorsal lobe is about two-thirds the width of the 
whorl itself, and is prominent, sharply defined at its margins and very 
regularly rounded. The lateral lobes curve regularly and quite abruptly 
from the dorsal lobe to the umbilical openings. Size of the most perfect 
specimen, which is not, however, the largest one obtained: greatest 
length from near the outer edge of the aperture, about 15 ™™; width of 
the outer volution near the aperture, nearly 15 ae 
