NO. 1415. CAMBRIAN FAUNAS OF CHINA— WALCOTT. 65 



axis extend about two-thirds of the distance across the pleural lobes 

 and merge with the flat segments between them into the margin; the 

 margin slopes up from the sharp outer edge with a slight concavity 

 where it merges into the pleural lobes and touches the posterior end 

 of the axis. 



This species differs from Pagodia macedo and P. dolon in its frontal 

 rim and the slight convergence of the sides of its glabella toward the 

 front. It is most nearh' related to Pagodia hla, with which it is 

 associated, but differs from it in its narrower and proportionately 

 longer glabella, the glabella of P. hia having a length of 6 mm. with 

 a width at the center of 3 mm., and that of P. lotos with a length of 

 5 mm. has a width at the center of nearly 4 mm. 



Formation and locaUty. — Upper Cambrian, lower portion of Chao 

 Mi Tien formation, in a gray fossiliferous limestone; Pagoda Hill, 

 1 mile west-southwest of Tai An Fu, Shangtung, China. 



Collected ))y Eliot Blackwelder, of the Carnegie Institution of 

 Washington Expedition to China. 



PAGODIA BIA, new species. 



Head, exclusive of the free cheeks, subrhomboidal, moderately" con- 

 vex. Glabella slightly convex, sul)quadrilateral in outline, slightly 

 narrowed along the central portions,- and marked by two pairs of 

 short glabellar furrows on the posterior half and a very slight 

 depression indicating a furrow on each side well toward the front; 

 occipital furrow narrow^ very clearly detined and arching slightly 

 forward toward the center; occipital ring narrowMind rounded; dorsal 

 furrow shallow but distinct. 



Fixed cheeks about half as wide as the glabella and sloping gentl}^ 

 downw^ard from the dorsal furrow; palpebral lobes small, situated 

 about midway between the front and back margins of the head; no 

 traces of ocular ridges have been observed; postero-lateral limb 

 short, strong, and marked by a rounded furrow within the posterior 

 margin; frontal rim very narrow, rounded, and separated from the 

 glabella and tixed cheeks by a narrow, deep furrow. 



Surface marked l)y a few shallow, scattered punctw, and under a 

 ver}" strong lens it appears to be minutely punctate. The largest 

 specimen of the head in the collection has a length of 8 mm. 



The form of the glabella of this species is not unlike that of Pagodia 

 inact'do^ but its anterior lobe is much broader. 



Formation and locality. — Upper Cambrian, lower portion of Chao 

 Mi Tien formation, in a hard, dark limestone; 2.7 miles southwest of 

 Chao Mi Tien and Pagoda Hill, a mile west-southwest of Tai An Fu, 

 Shangtung, China. 



Collected b}- Eliot Blackw^elder, of the Carnegie Institution of 

 Washington Expedition to China. 

 Proc. N. M. vol. xxix— 05 5 



