168 RESEARCH IN CHINA. 
A cephalon referred to this species occurs at Ch’au-mi-tién at a lower horizon 
in the Ch’ang-hia limestone, and appears to be identical with the type specimen, 
except that the granulation of the surface is finer and the granules are more 
scattered. 
Formation and Locality—Middle Cambrian: (C25) Limestone about 50 feet 
(15 m.) below the Ku-shan shale in the uppermost beds of the Ch’ang-hia formation 
[Blackwelder, 19074, p. 33 (part of the last list of fossils)], at Ch’ang-hia, Shan-tung; 
also (C51), lower part of gray crystalline limestone in the upper portion of the oolitic 
part of the Ch’ang-hia limestone [idem (part of the first list of fossils]), at Ch’au-mi- 
tién, Shan-tung, China. 
Collected by Eliot Blackwelder. 
Also from Locality 85r, Fu-chéu series; limestones near the base of the series 
just above the white quartzite [see Blackwelder, 1907), p. 92, for general section 
giving stratigraphic relations], 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. 
Solenopleura beroe Walcott. 
Plate 17, Figures 14, 14d, 17. 
Solenopleura beroe WALCOTT, 1905, Proc. U.S. Nat. Mus., vol. xxx, p. 91. (Species characterized 
as below.) 
The description of the general form of the cephalon of S. agno [p. 167] applies 
very closely to this species. It differs from the latter in its broader fixed cheeks, 
shorter frontal limb, more clearly marked glabellar furrows, and minutely pustulose 
surface. The type and only specimen of the cephalon in the collection has a length 
of 4mm. A number of specimens of the cephalon of this species were collected by 
Dr. J. P. Iddings in Manchuria in association with the Dorypyge richthofent fauna. 
Formation and Locality—Upper Cambrian: (C64) Upper limestone member 
of the Kiu-lung group [Blackwelder, 1907a, pp. 37 and 42 (first list of fossils), and 
fig. 10 (bed 20), p. 38], 2.7 miles (4.3 km.) southwest of Yen-chuang, Sin-t’ai district, 
Shan-tung, China. 
Collected by Eliot Blackwelder. 
Also from Locality 85n, Middle Cambrian: Fu-chéu series; limestones near the 
base of the series just above the white quartzite [see Blackwelder, 1907), p. 92, for 
general section giving stratigraphic relations]; 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. 
Solenopleura chalcon Walcott. 
Plate 17, Figure 13. 
Solenopleura chalcon WALCOTT, 1911, Smithsonian Misc. Coll., vol. 57, No. 4, p. 83, plate 16, fig. 5, 
(Described and discussed as a new species essentially as below.) 
Only one specimen of the cranidium of this species is known. In form it is 
nearest to Solenopleura beroe Walcott [plate 17, fig. 14]. It differs in having a 
proportionately narrower glabella; more convex free cheeks; more rounded frontal 
rim, and in the presence of a depression dividing the frontal limb on the median 
line of the glabella. Its tuberculated surface is much like that of S. beroe. 
Formation and Locality—Middle Cambrian: (35r) Fu-chéu series, limestones 
near the base just above the white quartzite [see Blackwelder, 1907), p. 92, for 
general section giving stratigraphic relations]; 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. 
