46 
This very rare and remarkable Terebratulite now lately 
discovered, is of a tolerably narrow elliptical, almost pear-shaped 
form, it is not particularly thick, is regularly convex ( “gewolbt ”) 
with a fine, striped, shagreen-like surface, and on both valves the 
somewhat prominent rays (Streifungslinien) are covered with 
numerous small, sharp spines, by which this and spinosus may 
be distinguished from all other known species. It is very 
seldom found. 
Terebratul. spinosus, which is figured in Knorr P. 11 , I. 
T. B. iv., figure 4, is likewise furnished with short spines, and 
constitutes a separate species, which is wanting in my collection.” 
von Schlotheim gives no locality for Terebratulites sjrinosus. 
It will be observed that Schlotheim considered T. senticosus 
and T. spinosus to be separate species, and that Davidson makes 
a mistake in stating that Schlotheim referred his T. senticosus 
to Knorr’s figure. 
Quenstedt considers that von Schlotheim’s T. senticosa came 
from the kieselhaltigen obern weissen Jura von Krumbach, as 
the specimens are said to be petrified in chert (Hornstein) ; and 
he states that the shell is very rare. (Die Brachiopoden, page 
115.) But von Buch, says it occurs in the beds of the Inferior 
Oolite above the Lias, at Grumbach by Amberg. He gives 
the same horizon for T. spinosa. 
William Smith, (Stratigraphical System of Organized Fossils, 
1817,) gives among those from the Under Oolite (page 108), 
Tcrebratula spinosa ; “ Circular, convex, with many roundish 
plaits set with long slender spines in quincuncial order; middle 
of the front elevated in a large curve rounding into the sides; 
beak small, incurved; upper valve most convex. (Localities) 
Bath, Tucking Mill, Chipping Norton.” 
Bhynchonclla spinosa is thus described by Valenciennes in 
(Lamarck, Animaux sans Vertebres, 1819.) “ Tercbrafula spinosa. 
T. testaglobosa ; dilitata; sulcis parvis spinosis; nate brevissima 
acuta.” Lamarck’s three specimens have the following 
looality :—-Mortagne pres Alencon, Briere. 
Zieten (Yerstein: Wiirtemberg, 1832, Plate 44, fig. i., a—e 
naturliche Grosse, f—h vergrossert) gives as reference Tcre- 
bratulites spinosus, Schlotheim Petrefacten-kunde, page 269, and 
1 Knorr, Plate n., B. iv., fig. 4,’ and states that the species 
occurs “ In den sandigen Lagen des untern Oolith mit 
