NO. 5 CAMBRIAN TRILOBITES RESSER 33 



Middle Cambrian, Spence ; (loc. 55c) Liberty Canyon, west of 

 Montpelier, Idaho. 



Cotypes. — U.S.N.M. nos. 62709-62712. 



Glossopleura utahensis, n. sp. 

 Bathyuriscus prodtictus Walcott (part), U. S. Geol. Surv. Bull. 30, p. 217, 



pi. 30, figs. I, lb, 1886. 

 Bathyuriscus ana.v Walcott (part), Smithsonian Misc. Coll., vol. 64, no. S, 



p. 335, Pl- 48, fig. lb, 1916. 



Besides the figured head and cheek numerous other cranidia as well 

 as pygidia are on hand. 



Middle Cambrian, Ophir ; (loc. 30a) i mile below Argenta, Cotton- 

 wood Creek, Wasatch Range, Utah. 



Holotype and paratypcs. — U.S.N.M. no. 62641. 



Glossopleura mckeei, n. sp. 



Dolichoiuefopus productus Walcott (not Hall and Whitfield), Smithsonian 

 Misc. Coll., vol. 64, no. 5, p. 369, pl. 53, figs. 4, 4a, 1916. 



Dolichonictopus fontocnsis Walcott (part), idem, pl. 51, figs, id', id", ih 

 (others Anoria tontcensis). 



Compared with G. producta, this species has a wider glabella, which 

 expands forward somewhat faster and the pygidium lacks the pleural 

 furrows and has much weaker axial furrows. In this respect it is 

 more like G. parabola. 



The specific name is in recognition of the splendid work the present 

 Park Naturalist Edwin D. McKee is doing at the Grand Canyon. 



Middle Cambrian, Bright Angel ; (loc. 74e) Indian Garden Springs 

 and (loc. 74) Nankoweap Basin, Grand Canyon, Arizona. 



Glossopleura buttsi, n. sp. 



DoUchonietopus f productus Butts (not Hall and Whitfield), Geol. Surv. Ala- 

 bama, Spec. Rep. 14, pl. 5, figs. 8, 12, 17, 18, 1926. 



This species differs from G. producta in having shorter cranidium 

 and pygidium. 



Middle Cambrian, Conasauga ; Aldrich, Alabama. 

 Cotypes. — U.S.N.M. no. 90169. 



Glossopleura alabamensis, n. sp. 



Dolichometopus ? productus Butts, Geol. Surv. Alabama, Spec. Rep. 14, pl. 5, 

 figs. 6, 7, 10, II, 13-16, 1926. 



Compared with G. buttsi, this species has a smaller eye and less 

 fusion of the pleura in the tail. 



Middle Cambrian, Conasauga ; 3 miles west of Talladegea, Alabama. 

 Cotypes. — U.S.N.M. no. 90170. 



