NO. 3 CAMBRIAN TRILOBITES 197 



The cranidiiim illustrated has a length of 3 mm, exclusive of the 

 occipital spine, and occurs in a fine argillaceous shale. 



Formation and locality. — Upper Cambrian: (128) Conasauga 

 formation; 1.5 miles (2.4 km.) southwest of Cleveland, Bradley- 

 County, Tennessee. 



SARATOGIA CALCIFERA (Walcott) 

 Plate 34, figs. 6, 6a-e 



Conocephalites calciferous Walcott, 1879, Thirty-second Ann. Rept. New 



York State Mus., pp. 129-130. (Description of species.) 

 Ptychoparia calcifera (Walcott), 1886, Bull. U. S. Geol. Surv., Ng. 30, p. 



21. (Name in list of species.) 

 Ptychoparia calcifera (Walcott) Dwight, 1887, Trans. Vassar Bros. Inst., 



Vol. 4, pp. 207-208. (Species mentioned in text.) 

 Ptychoparia calcifera (Walcott) Lesley, 1889, Geol. Surv. Pennsylvania, 



Rept. P 4, Dictionary of Fossils, Vol. 2, p. 831. (Text fig. i reproduced 



from drawing sent him by Walcott.) 

 Ptychoparia calcifera Weller, 1903, Geol. Surv. New Jersey, Rept. on Pal., 



Vol. 3, The Paleozoic Faunas, pi. i, fig. 14. (Illustrates a fragment 



doubtfully referred to this species.) 

 Lonchocephalus calciferus (Walcott), 1912, Smithsonian Misc. Coll., Vol. 



57, No. 9, pp. 270-272, pi. 43, figs. 7-10. (Repeats earlier description and 



adds further observations.) 



This species has been recently described in this series of papers. 

 The illustrations are reproduced for comparison with the type species 

 of the genus Lonchocephalus (pi. 34, figs. 3, 3a-&), 



Saratogia calcifera is made the genotype of Saratogia on account 

 of its being in a much better state of preservation than other species 

 referred to the genus. 



Formation and locality. — Upper Cambrian: Hoyt limestone; (76) 

 arenaceous limestone at Hoyts quarry, 4 miles (6.4 km.) west of 

 Saratoga Springs, Saratoga County; (76a) in a railroad quarry, 

 I mile (1.6 km.) north of Saratoga Springs, Saratoga County; and 

 in arenaceous limestone, 2 miles (3.2 km.) south of Poughkeepsie, 

 Dutchess County ; all in New York. 



SARATOGIA HERA, new species 



Plate 35, figs. 3, 2>a-b 



This is essentially similar to vS. zvisconsensis with a glabella of the 

 Conaspis shumardi form. Only the cranidia are preserved, along 

 with scattered thoracic segments bearing a long, slender, backward- 

 extending spine on the axial lobe. 



