PARAPHORHYNCHUS, A NEW GENUS OF KINDER- 
HOOK BRACHIOPODA.* 
STuaRtT WELLER. 
In the Kinderhook faunas of the Mississippi Valley there 
are several species of rhynchonelloid shells which have 
always been referred either to the genus Rhynchonella or 
Pugnax, which seem to possess characters of good generic 
value. There has always been more or less confusion in the 
specific determination of these forms, Rhynchonella striato- 
costata being the only one which has ever been adequately de- 
scribed, and even this one has been confused with Pugnax 
missouriensis which is entirely distinct and belongs to a dif- 
ferent genus. All of these shells are of rather large size, are 
coarsely plicate, usually with simple plications, and have the 
entire surface covered with very fine radiating striae. Inter- 
nally they resemble Camarotoechia far more closely than 
Pugnax, the genus to which they were referred by Hall and 
Clarke. Because of the finely striated surface of the shells 
and their rhynchonelloid form, they may be called Parapho- 
rhynchus. 
Three species of the genus are recognized in the Kinder- 
hook strata of the Mississippi valley, P. elongatum n. sp., a 
form which has not hitherto been noticed, P. striatocostatum 
M. & W., and P. transversum n. sp., which has been referred 
to both P. striatocostatum and Pugnax missouriensis in the 
literature. In addition to these, two forms from the Waverly 
beds of Warren County, Pennsylvania, have been described 
by Simpsont as Rynchonella medialis and Rhynchonella 
striata which may be placed with the three species from the 
Mississippi Valley. 
* Presented by title to The Acad. of Sci. of St. NOt April 17, 1905. 
+ Trans. Am. Phil. Soc., vol. 15, p. 444. 
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