DESCRIPTION OF GENERA AND SPECIES. 109 
Ch’ang-hia, (C29) near the top of the cliffy limestone in the Ch’ang-hia limestone 
[Blackwelder, 19074, p. 32 (part of last list of fossils)], 1 mile (1.6 km.) west of 
Ch’ang-hia, (C30) layer in black oolite of the Ch’ang-hia limestone [idem, p. 33 
(part of first list of fossils)], 25 feet (7.5 m.) above the second cliff at an elevation 
of 1,700 feet (568.9 m.) on top of the long north-and-south ridge at Ch’ang-hia, 
and (C24) near top of black oolite group in the uppermost layers of the Ch’ang- 
hia formation [idem (part of last list of fossils)], 2 miles (3.2 km.) east of Ch’ang- 
hia, Shan-tung, China; also (C1 and C2), lower shale member of the Kiu-lung group 
lidem, pp. 37 and 4o (part of the third list of fossils), and fig. 10 (beds 4 and 5), 
p. 38], 2 miles (3.2 km) south of Yen-chuang, Sin-t’ai district, (C57) limestone 
nodules in the lower shale member of the Kiu-lung group [idem (first list of fos- 
sils)], 3 miles (4.8 km.) south of Kao-kia-p’u, and 4 miles (6.4 km.) north of Sin- 
t’ai-hién, Sin-t’ai district, Shan-tung, and (C71) massive cliff-making limestone in 
the central portion of the Ki-chéu formation [Willis and Blackwelder, 1907, pp. 139 
and 145 (second list of fossils)], 4 miles (6.4 km.) southwest of Tung-yii, Shan-si, 
China. 
Collected by Eliot Blackwelder, Bailey Willis, and Li San. 
Also from the following: (85n and 35r) Fu-chdéu series; limestones near the 
base of the series just above the white quartzite [see Blackwelder, 1907), p. 92, for 
general section giving stratigraphic relations], and (35p), shales about 80 feet (24 m.) 
above the white quartzite [see idem], all three collected in a low bluff on the shore of 
Tschang-hsing-tau Island, east of Niang-niang-kung, Liau-tung, Manchuria, China. 
Collected by J. P. Iddings and Li San. 
Dorypyge richthofeni levis Walcott. 
Plate 8, Figures 2, 2a-b. 
Dorypyge richthofeni levis WALCOTT, 1906, Proc. U. S. Nat. Mus., vol. xxx, p. 573. (Variety 
characterized.) 
This variety is characterized by a nearly smooth surface. An associated pygid- 
ium and cephala of D. richthofent Dames have tubercles over most of the surface. 
Formation and Locality.—Middle Cambrian: (C71) Massive cliff-making lime- 
stone in the central portion of the Ki-chéu formation [Willis and Blackwelder, 1907, 
pp. 139 and 145 (second list of fossils)], 4 miles (6.4 km.) southwest of Tung-yii, 
Shan-si, and (C72) thin green-gray limestone interbedded with ocherous and green 
clay shales, overlying the massive oolite in the Ki-chéu formation [idem (third list 
of fossils)], 4 miles (6.4 km.) east of Fang-lan-chén, Shan-si, China. 
Collected by Eliot Blackwelder. 
Genus TEINISTION Monke. 
Teintstion MONKE, 1903, Jahrb. k6énigl. Preuss. Geol. Landesanstalt und Bergakademie, vol. xx11, 
pt. 1, p.117. (Genus described and discussed.) 
Dorypygella WALCOTT, 1905, Proc. U.S. Nat. Mus., vol. xx1x, p.29. (Genus described and discussed 
as a new genus.) 
Cephalon transversely semicircular, with a truncato-conical glabella, having 
a postero-lateral lobe in the dorsal furrow, and a narrow frontal rim and border; 
fixed cheeks medium to broad, with relatively large, elevated palpebral lobes; facial 
sutures, cutting the anterior rim in front of the anterior base of the eye-lobe, extend 
inward and backward in a slight outward curve to the eye-lobe; arching about the 
eye-lobe they extend outward and backward with a sigmoid flexure, cutting the pos- 
terior rim within the postero-lateral angle. 
