252 CAMBRIAN BEACHIOPODA. 



319x [U. S. National Museum]. (See 319w.) Lower Cambrian: Limestone at the crossing of East Creek and Grove 

 Street, 1.25 miles (2 km.) north of Rutland, Rutland County, Vt. (A. F. Foerste, 1890). 

 Micromitra (Paterina) labradorica swantonensis. 



319y [U. S. National Museum]. (See 26 and 319v.) Lower Cambrian: Sandstone 2 miles (3.2 km,) east-southeast 

 of Highgate Springs, Franklin County, Yt. (C. D. Walcott, 1889). 

 Micromitra (Paterina) labradorica swantonensis. 

 Stenotheca rugosa (Hall). 

 Ptychopariasp. 



319z [U. S. National Museum]. (See 25a.) Lower Cambrian: Sandy limestone 2.5 miles (4 km.) east of Swanton, 

 Franklin County, Vt. (C. D. Walcott, 1897). 

 Micromitra (Paterina) labradorica swantonensis. 



320 [Wallerius, 1895, p. 66]. (For stratigraphic position and association, see p. 145.) Middle Cambrian: Gudhem, 

 12.5 miles (20.1 km.) south-southeast of Skara, Province of Skaraborg, Sweden. 

 Acrotreta parvula. 



320a [Wallerius, 1895, p. 66]. (For stratigraphic position and association, see p. 145.) Middle Cambrian: 

 Djupadal, 19 miles (30.6 km.) south-southeast of Skara, Province of Skaraborg, Sweden. 

 *Acrotreta parvula. 

 Agnostus Isevigatus Dalman. 



320b [U. S. National Museum]. (For stratigraphic position and association, see p. 145.) Middle Cambrian: Lime- 

 stones forming 2d of the Paradoxides zone, the Agnostus Ixvigatus horizon, at Gudhem, 12.5 miles (20.1 km.) 

 south-southeast of Skai'a, Province of Skaraborg, Sweden. 



Acrothele coriacea. I *Billingsella exporrecta. 



Acrothele (Redlichella) granulata. | *Bimngsella exporrecta rugosicostata. 



320c [Wallerius, 1895, p. 66]. (For stratigraphic position and association, see p. 145.) Middle Cambrian: Andrarum 

 limestone at Andrarum, 20 miles (32 km.) northwest of Simrishamn, Province of Christianstad, Sweden. 

 Acrotreta schmalenseei. 



320d. [U. S. National Museum]. (For sti-atigraphic position and association, see p. 146.) Middle Cambrian: Exsu- 

 lans limestone in the lower part of the Paradoxides tessini zone at FogelsS,ng, 5 miles (8 km.) east of Lund, 

 Province of Malmohus, Sweden. 

 Acrotreta schmalenseei. 



320e [IT. S. National Museum]. (See 321q.) (For stratigraphic position and association, see p. 145.) Middle 

 Cambrian: Limestone at Munkesten, north of Hunneberg, Province of Skaraborg, Sweden. 

 Acrotreta schmalenseei. 



320f [U. S. National Museum]. (See 8w, 3101, and 321y.) (For stratigraphic positionand association, see p. 145.) 

 Middle Cambrian: Limestone at Andrarum, 20 miles (32 km.) northwest of Simrishamn, Province of Chris- 

 tianstad, Sweden. 



Micromitra pusilla. I Acrothele coriacea. 



Micromitra (Iphidella) ornatell. | Orusia lenticularis. 



320g [U. S. National Museum], (For stratigraphic position and association, see p. 145.) Middle Cambrian: Lime- 

 stones of the Paradoxides forchhammeri zone at Borgholm, Oeland Island, Sweden. 

 Acrothele coriacea. 

 Bilhngsella exporrecta. 



S20h [Gronwall, 1902, p. 39]. (For stratigraphic position and association, see p. 145.) Middle Cambrian: Shales 

 in the Paradoxides tessini zone at Lovened, 19 miles (30.6 km.) south-southeast of Skara, Province of Skara- 

 borg, Sweden. 

 Acrothele intermedia. 



320i [Gronwall, 1902, p. 39]. (For stratigraphic position and association, see p. 145.) Middle Cambrian: Limestones 

 of the Coronatus zone at Andrarum, 20 miles (32 km.) northwest of Simrishamn, Province of Christianstad, 

 Sweden. 

 Acrothele intermedia. 



320] [Gronwall, 1902, p. 39]. (For stratigraphic position and association, see p. 145.) Middle Cambrian: Lime- 

 stones of the Coronatus zone at Gislof , Province of Malmohus, Sweden. 

 Acrothele intermedia. 



