Weller—Paraphorhynchus, Genus of Kinderhook Brachiopoda. 263 
lower than the brachial, flattened on the umbo; the fold and 
sinus originating much nearer the beak than in #. elongatum, 
the lateral slopes of the shell concave towards the beaks. The 
coarser surface markings consist of from nine to eleven strong, 
rounded, simple plications, and « few more or less irregularly 
developed concentric lines of growth which are sometimes 
almost obsolete; of the radiating plications, three or four, 
rarely two only, are included in the sinus of the pedicle valve 
which becomes deep toward the front, the median portion of 
the valve being produced toward the brachial valve in a lingual 
extension. The minute surface markings consist of fine radi- 
ating striae which cover the surface of both valves, about 
four or five occupying the space of one millimeter. Fine 
concentric striae are also present but they can only be detected 
by the aid of a magnifying glass and are frequently quite 
obscure, never being so conspicuous as upon P. elongatum. 
The dimensions of a very perfect specimen from Burling- 
ton, lowa, are: length 22.5 mm., width 23 mm., thickness 
15mm. The dimensions of a Pike County, Illinois, specimen 
are: length 25.5 mm., width 26 mm., thickness 18 mm. 
The average rostral angle of five specimens is 98°. 
‘This species may be easily distinguished from P. elongatum 
by its smaller size, its greater proportionate width, its shal- 
lower pedicle valve and its greater rostral angle. 
Localities. Meek and Worthen’s type of this species is 
recorded from Kinderhook, Pike County, Illinois. The spe- 
cies also occurs in beds 3 and 4 (Weller 1899), of the 
Kinderhook section at Burlington, Iowa. The specimen 
illustrated by Hall and Clarke as Pugnax missouriensis is said 
to have come from Pike County, Missouri, and Prof. R. R. 
Rowley, of Louisiana, Missouri, has informed the writer that 
he has collected the species in its typical form, from the 
Louisiana Limestone of that county. The specimens here 
illustrated are from Pike County, Illinois (Pal. Coll. Walker 
Museum, No. 6711), and are probably from Kinderhook, the 
type locality of the species; and from Burlington, Iowa (Pal. 
Coll. Walker Museum, No. 6658), bed No. 4 of the Kinder- 
hook. | 
