114 RESEARCH IN CHINA. 
(second list of fossils), and fig. 10 (bed 12), p. 38], 2.5 miles (4 km.) southwest of 
Yen-chuang, Sin-t’ai district, Shan-tung, China. 
Collected by Eliot Blackwelder. 
Stephanocare richthofeni Monke. 
Plate 7, Figures 17, 17a-f. 
Stephanocare richthofent MONKE, 1903, Jahrb. kénigl. Preuss. Geol. Landesanstalt und Bergakademie, 
vol. xx, pt. 1, p. 136, plate 7, figs. 1-15. (Species described and discussed as a new species 
and the genotype.) 
Damesella chione WaLcott, 1905, Proc. U. S. Nat. Mus., vol. xxrx, p. 40. (Species described and 
referred to Damesella.) 
Of this species there are several well-preserved central portions of the cephalon, 
free cheeks, and pygidia. 
The cephalon is transversely semicircular, moderately convex. Glabella 
convex, truncato-conical, rounded in front; the length is slightly greater than the 
width at the base; a posterior pair of glabellar furrows extends inward and obliquely 
backward a short distance, so as to outline a small, oval, slightly convex lobe at 
the postero-lateral angles; a second pair of very slightly impressed, short glabellar 
furrows occurs about half way between the posterior furrows and the front; and a 
third pair of furrows is indicated on some examples; occipital furrow narrow, trans- 
verse, clearly defined; occipital ring narrow at the sides; increasing in width toward 
the center, slightly convex, and a little elevated at the back; the posterior margin 
shows a number of short, strong spines; the largest number seen is eight, four on each 
side of the center; dorsal furrow narrow and distinct. 
Fixed cheeks about one-half the width of the glabella at the base, and moder- 
ately convex; they round up from the dorsal furrow and are nearly flat out to the 
palpebral lobe, back of the line of which they slope gently to the furrow of the pos- 
tero-lateral limb, and in front more abruptly to the furrow within the front margin; 
palpebral lobe a little more than one-third the length of the cephalon, narrow, 
distinct, but not rising above the general level of the fixed cheek; palpebral ridge 
indicated only by a very narrow, smooth line between the anterior end of the palpe- 
bral lobe and the dorsal furrow; postero-lateral limb narrow and extending out 
a considerable distance to a rather blunt, rounded end; its posterior margin is 
ornamented with short, strong spines, that are usually broken away; front margin 
of the cephalon badly preserved; it appears to have been short, rounded, and separ- 
ated from the glabella and fixed cheeks by a narrow furrow. 
Free cheeks subtriangular in outline, with a distinct, narrow, slightly elevated 
border and a sharp postero-lateral spine; the posterior border within the genal spine 
has three or four short, strong spines corresponding to the spines of the posterior 
border of the central portions of the cephalon; the outer margin was provided with 
short, strong spines that are usually broken off from the specimens in the collection; 
from the base of the spine an inner flattened border originates and narrows to a 
point below the front of the eye-lobe; it is defined by a narrow furrow within the 
sharp rim, and the furrow between it and the central portion of the cheek; it is marked 
by granules in the same manner as the body of the cheek; the narrowing and dis- 
appearance of the flat border, leaving only the narrow rim at the facial suture, 
indicate that the border in front of the fixed cheeks of the glabella was very narrow; 
body of the cheek moderately convex, rounding up from the furrow at its base to 
the base of the strong eye-lobe; the facial suture extends with a slightly sigmoid 
curve from the posterior base of the eye-lobe outward and backward to the furrow 
within the rather broad posterior margin of the free cheek; it there cuts directly 
