NO. 1415. CA MBRIA N FA UNA S F ( 'HINA — WA L ( •() TT. 9 1 



This .spet'ie.s at first sugg-ests S. agno^ ])ut differs from that and other 

 species from China in its very narrow fixed cheeks and rehitively hirge 

 palpebral lobes. 



Foriiudlon and locality. — Middle (?) Cambrian limestone and shale, 

 probably of the Ku San shale horizon, just below the Chao Mi Tien 

 formation, at an elevation of 380 feet above the Won Ho River, 12 

 miles S. 80^^ E. of Tai An Fn. Shangtung-, China. 



Collected ])y Eliot Black welder, of the Carnegie Institution of 

 AVashington Expedition to China, 



SOLENOPLEURA BEROE, new species. 



The description of the general form 8. agno applies very closel}' to 

 this species. It differs from the latter in its broader fixed cheeks, 

 shorter frontal liml), n)ore clearly marked glabellar furrows, and 

 minutely pustulose surface. The t\^pe and only specimen of the head 

 in the collection has a length of 4 mm. 



Forination and locality. — Upper Cambrian, Chao Mi Tien forma- 

 tion, in a compact, gray, very fossiliferous limestone; 2.T miles south- 

 west of Yen Chuang, Hsin Tai, Shangtung, China. 



C'Ollected by Eliot Black welder, of tlie Carnegie Institution of 

 Washington Plxpedition to China. 



Genus DIKELOCEPH ALUS Owen. 

 DIKELOCEPHALUS (.') BAUBO, new species. 



The description of Dikelocephalus {f) hrizo applies to this form, 

 with the exception that D. {f) haul)o has a more rounded front to the 

 glal)olla, and its frontal rim and border vary somewhat in form. 

 In 1). {f) hauho the palpebral lobe is preserved, and shows it to have 

 been relatively small and short and marked just within the rim by a 

 rather deep furrow. A head of 1). {/) haulto 1(5 mm. in length has a 

 glabella 12 mm. in length, frontal rim and limV) 2 nim., and occipital 

 furrow and ring 2 nuii. in length; the glabella has a width of \) mm, 

 opposite the palpebral lobe. The surface is marked by strong scattered 

 pustules over the glabella; but with little trace of them on the lixed 

 cheeks and frontal rim. The two specimens of the head of this species 

 in the collection vary somewhat in the form of the frontal rim, it 

 being nearly flat in one and slightl}^ concave in the other. 



The most nearly related form is D. (.^) hrizo. 



Fovviation and locality. — Upper Cambrian, upper portion of the 

 Chao Mi Tien formation, in a compact, hard, fossiliferous, gra}^ lime- 

 stone; 2.7 miles southwest of Yen Chuang, Hsin Tai, Shangtung, 

 China, 



Collected b}" Eliot Blackwelder, of the Carnegie Institution of 

 Washington P^xpedition to China. 



