152 RESEARCH IN CHINA. 



This species, at first sight, might be taken for a broad form of Inouyia melie 

 [p- : 53L but on closer examination it is seen that the glabella is nearly rectangular 

 instead of truncato-conical, the fixed cheeks are more than twice the width, and 

 glabella narrower, in specimens of the same size. The palpebral ridges of Inouyia 

 capax are also unlike those of I. melie. 



Formation and Locality. Middle Cambrian: (070) Oolitic limestone about 30 

 feet (9 m.) above the base of the Ki-chou limestone [Willis and Blackwelder, 1907, 

 p. 144 (last list of fossils)], 4 miles (6.4 km.) south-southwest of Tung-yii, Shan-si, 

 China. 



Collected by Eliot Blackwelder. 



Inouyia divi (Walcott). 

 Plate 14, Figures 13, 1311, 14 (?). 

 Agraulos divi WALCOTT, 1905, Proc. U. S. Nat. Mus., vol. xxix, p. 45. (Species described as below.) 



This species is represented by portions of the central parts of the cephalon. 

 The glabella is convex truncato-conical in outline, the width of the base and the 

 length being the same ; three pairs of glabellar furrows are very slightly indicated ; 

 occipital furrow shallow and broad; occipital ring narrow at the sides, gradually 

 widening toward the center, very slightly convex, and without an occipital spine. 



Fixed cheeks about as wide as the front of the glabella and nearly flat opposite 

 the palpebral lobes ; posteriorly they slope slightly into a strong groove parallel to 

 the posterior margin, and in front the slope is slight down to a broad, slightly indi- 

 cated transverse furrow; palpebral lobes unknown; only a trace of the palpebral 

 ridge is shown; frontal limb convex, broad, and extending to the frontal margin 

 without any trace of a line of demarcation between it and the frontal rim; a broad, 

 shallow transverse furrow extends in front of the glabella and outward across the 

 cheeks below and in front of the palpebral ridges ; dorsal furrow broad and shallow. 



Surface finely papillose under a strong lens. 



The largest cephalon of the collection has a length of 9 mm. 



This species is characterized by its short glabella, broad dorsal furrow, trans- 

 verse furrow in front of the glabella, and strong frontal limb. 



Formation and Locality. Middle Cambrian: (C24) Near top of black oolite 

 group in the uppermost layers of the Ch'ang-hia formation [Blackwelder, 19070, 

 p. 33 (part of last list of fossils)], 2 miles (3.2 km.) east of Ch'ang-hia, Shan-tung; 

 also (Cl), lower shale member of the Kiu-lung group [idem, pp. 37 and 40 (part of 

 the third list of fossils), and fig. 10 (bed 4), p. 38], 2 miles (3.2 km.) south of Yen- 

 chuang, and (C5) lower limestone member of the Kiu-lung group [idem, pp. 37 and 

 39 (first list of fossils), and fig. Sa (bed 30), p. 29], 3.2 miles (5.1 km.) southwest of 

 Yen-chuang, Sin-t'ai district, Shan-tung, China. 



Collected by Eliot Blackwelder. 



Inouyia ? inflata (Walcott). 

 Plate 14, Figure 10. 



Ptychoparia inflata WALCOTT, 1906, Proc. U. S. Nat. Mus., vol. xxx, p. 587. (Species described and 

 discussed essentially as below.) 



This species is represented by two specimens of the central portions of the 

 cephalon, exclusive of the free cheeks. The parts preserved indicate that the 

 cephalon was rather strongly convex, and semicircular in outline. Glabella mod- 

 erately convex, with the length and width at the base equal; the sides converge 

 slightly toward the rather broadly rounded antero-lateral angles; front nearly 

 transverse; surface marked by a clearly defined posterior pair of furrows, which 

 extend obliquely inward and backward, separating a subtriangular postero-lateral 



