NO. 5 CAMBRIAN TRILOBITES 399 



Formation and locality. — Upper Cambrian: (102a) Maryville 

 limestone; summit of limestone, exposure at west end of limestone 

 and shale knob, first right-hand road from Kingsport pike, 1.25 miles 

 (2 km.) east of Rogersville, Hawkins County, Tennessee. 



BLOUNTIA ANSER, new species 



Plate 61, figs. 7, ya-b 



This very neat little species suggests in its cranidium B. niimida, 

 but it differs in its frontal border and very narrow frontal limb. The 

 associated pygidium is more like the pygidium associated with the 

 cranidium of B. alethes. 



One cranidium has a length of 3 mm. and a second 4 mm. 



Formation and locality. — Upper Cambrian : (120) Maryville Hme- 

 stone ; north of Bays Mountain, 2 to 3 miles (3.2 to 4.8 km.) south of 

 New Market, Jefferson County, 18 miles (28.6 km.) east-northeast of 

 Knoxville, Tennessee. 



BLOUNTIA MIMULA, new species 

 Plate 61, figs. 4, 4a-c 



One nearly entire dorsal shield of this species is taken as the 

 genotype of the genus and is described in the generic description. 

 It is the only specimen showing the seven segments of the thorax. 

 Blountia mimula has thus far been found in limestones of the Appa- 

 lachian region in Tennessee. 



Formation and locality. — Upper Cambrian : (120) Maryville Hme- 

 stone ; north of Bays Mountain, 2 to 3 miles (3.2 to 4.8 km.) south of 

 New Market, Jefferson County, 18 miles (28.6 km.) east-northeast 

 of Knoxville; (107c) west base of Copper Ridge; 11 miles (17.6 

 km.) northwest of Knoxville; (1070) Conasauga formation (Noli- 

 chucky shale zone) ; limestones and shales at the base of the Knox 

 dolomite, west of the top of Copper Ridge, near the Southern Rail- 

 way cut, about 10 miles (16.1 km.) northwest of Knoxville (Brice- 

 ville folio) ; (119) Maryville limestone, beneath Nolichucky shale; 

 on Cub Creek, 1.5 miles (2.4 km.) southeast of Morristown, Hamblen 

 County; (121a) 4 miles (6.4 km.) northeast of Rogersville, Haw- 

 kins County, on side of road leading from southeast of Harlans Knob 

 to Amis postoffice; (123b) top of Maryville Hmestone, near base of 

 NoHchucky shale; Rogersville, 0.5 mile (0.8 km.) east of depot on 

 left of railway in wagon road, Hawkins County; and (125) north 

 side of big creek below Harlan's Mill, 4 miles (6.4 km.) northeast of 

 Rogersville, Hawkins County, all in Tennessee. 



