NO. 3 CAMBRIAN TRILOBITES I95 



Formation and locality. — Upper Cambrian: (30 o) Weeks forma- 

 tion ( i& of section) ; north side of Weeks Canyon, 4 miles (6.4 km.) 

 south of Marjum Pass, House Range, Millard County, Utah. 



LONCHOCEPHALUS SOSPITA, new species 

 Plate 36, figs. I, la 



This species is represented by several small cranidia on a fragment 

 of sandstone as shown by figure 5. The broadly rounded, nearly 

 transverse front of the conical glabella, swollen frontal limb, and 

 very narrow, thread-like frontal rim serve to distinguish it from other 

 species of the genus. The largest cranidium has a length of 4 mm. 

 Surface unknown. 



Formation and locality. — Upper Cambrian: (339k) Eau Claire 

 formation ; near Winona, Winona County, Minnesota. 



Specimen collected and presented to the United States National 

 Museum by Mr. W. A. Finkelnburg, of Winona. 



SARATOGIA, new genus 



This genus is known only by the cranidia and free cheeks of the 

 cephalon, fragments of the thoracic segments, and the pygidium. 



The cranidium and free cheeks are not unlike those of Crepi- 

 cephalus iowensis Owen and Ptychoparia diademata except that the 

 fixed cheeks are narrow in Saratogia and there is a long spine on the 

 occipital ring. The pygidia associated with Saratogia calcifera and 

 6^. zvisconsensis and referred to those species are small and similar 

 in type to the pygidium of Ptychoparia kochibei.^ 



The surface of the test of Saratogia calcifera is thickly studded 

 with small, low granules. 



The cranidia of the species referred to the genus indicate a length 

 of from 40 to 45 mm. for the dorsal shield. 



Genotype. — Conocephalites calciferous Walcott (1879, Thirty- 

 second Ann. Rept. New York State Mus., pp. 129-130). 



Stratigraphic range and geographic distribution. — Saratogia cal- 

 cifera is found in the Upper Cambrian Hoyt limestone of New York ; 

 6'. arses in the Nolichucky formation, Tennessee ; 6^. zvisconsensis and 

 S. volux in the Eau Claire formation ; S. hamulus and 6^. hera in the 

 Franconia formation of Wisconsin, and 6". telhis in the Middle Cam- 

 brian, Kiu-lung group of Shantung, China. 



Observations. — The genus Saratogia differs from Ptychoparia^ in 

 the form of the glabella, narrow fixed cheeks, large eyes, and the 



^ Research in China, Carnegie Institution of Washington, 1913, Vol. 3, 

 Pub. No. 54, pi. 12, figs. 5, so. 

 " Syst. Sil. du Boheme, Vol. l, 1852, pi. 29, fig. 39. 



