382 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. S7 



Formation and locality.— Upper Cambrian : St. Lawrence forma- 

 tion ; (113) at La Grange Mountain (or Barn Bluff), near Red 

 Wing-, Goodhue County; also, (132) about 2 miles (3.2 km.) north- 

 west of Lake City, on Lake Pepin, Wabasha County (Chas. Schu- 

 chert, 1893), all in Minnesota. 



(85X) Near Mazomanie, Dane County, Wisconsin (Chas. Schu- 

 chert, 1893). 



(88) Upper Cambrian : Hamburg formation (limestone), west side 

 of Highland Range, 17 miles (27.2 km.) southwest of Pioche and 

 7 miles (-11.2 km.) north of Bennetts Spring, Lincoln County, Nevada 

 (C. D. Walcott, 1887). 



A cranidium and free cheeks that may belong to a variety of this 

 species occur in a friable sandstone with Dikeloccphalus cf . limhatns. 

 Osceolia osceola (Hall) and Saukia leucosia Walcott, near Devils 

 Lake, Wisconsin. The parts are larger than in the typical specimens 

 and it may be that another species is indicated. 



Localities 81 and 8ib, Upper Cambrian : Jordan? sandstone : i mile 

 (1.6 km.) east-northeast of Devils Lake, Sauk County, Wisconsin 

 (L. C. Wooster, 1883 ; Cooper Curtice, 1884). ' 



SAUKIA PYRENE, new species 



Plate 67, figs. 18-20 



This species is represented by numerous fragments of the dorsal 

 test including the cranidium, free cheeks and pygidium. At first sight 

 the cranidium was referred to the Texas form of Saukia fallax (pi. 

 67, fig. 21), but closer comparison showed that its glabella was pro- 

 portionally narrower and the sides more nearly parallel. The frontal 

 rim is of the same character in the two species. The pygidium asso- 

 ciated with S. pyrene (fig. 20, pi. 6y) is unlike that associated with 

 6". fallax in Texas (figs. 21, 21a, pi. 67). 



Saukia pyrene differs from the associated 5^. leucosia (pi. 67, figs. 

 14-17) mainly in its rounded strong frontal limb. The frontal limb of 

 S. pepinensis (pi. 67, figs. 1-5) is flattened and the glabella is propor- 

 tionally wider than that of 6^. pyrene. 



Formation and locality. — Upper Cambrian : St. Lawrence forma- 

 tion ; (78) quarry near St. Croix River, in suburbs of Osceola, Polk 

 County, Wisconsin (L. C. Wooster, 1883). 



A somewhat similar form is indicated in the sandstone at Devils 

 Lake by the presence of cranidia and free cheeks (8ib) : Jordan? 

 sandstone; i mile (1.6 km.) east-northeast of Devils Lake, Sauk 

 County, Wisconsin (L. C. Wooster, 1883; Cooper Curtice, 1884). 



