NO. 2 BRACHIOPOD SUPERFAMILY STENOSCISMATACEA — GRANT 1 77 



Page 



Plate 5 



1-9. — Sedenticellula sacra n. sp., X 2, Chappel Limestone, Central Tex 75 



1. Ventral, dorsal, lateral, and anterior views, USNM 142023, Cloud 

 loc. TF-406. 



2. Ventral, dorsal, lateral, and anterior views, USNM 14202S, Cloud 

 loc. TF-406. 



3. Ventral valve, USNM 125385b, Cooper (1957) loc. 2201-4. 

 loc. TF-406. 



4. Ventral, dorsal, lateral, and anterior views, USNM 142032, Cloud 

 loc. TF-406. 



5. Ventral, dorsal, lateral, and posterior views, USNM 142031, Cloud 

 loc. TF-406. 



6. Ventral, dorsal, lateral, and anterior views, USNM 142036, Cloud 

 loc. TF^106. 



7. Ventral, lateral, posterior, and anterior views, USNM 142039, 

 Cloud loc. 16T-2-27A-la. 



8. Dorsal and anterior views, USNM 142029, Cloud loc. TF-406. 



9. Ventral, dorsal, anterior, lateral, and posterior views, holotype, 

 USNM 142040, Cloud loc. 16T-2-27A-la. 



Plate 6 



1-3. — Cyrolexis haquei n. sp., exteriors X2, Lower Productus Limestone, 



Salt Range, Pakistan 91 



1. Ventral, dorsal, lateral, posterior, and anterior views, USNM 

 142055. 



2. Ventral, dorsal, lateral, posterior, and anterior views, holotype, 

 USNM 142061. 



3. Ventral, dorsal, and lateral views, USNM no. 142058. 



4-5. — Cyrolexis haquei n. sp., interiors, Lower Productus Limestone, Salt 

 Range, Pakistan. 



4. Cross-section, etched, X6, about 0.5 mm. from pedicle beak, USNM 

 142065. Shows wedged insertion of septa, duplex character of both 

 septa, minute intercamarophorial plate, fimbriate cardinal process. 



4a. Cross-section, etched, USNM 142066, X4, about 1.2 mm. from 

 beak, showing more anterior cross-section of camarophorium and 

 spondylium. 



5. Specimen broken longitudinally along midline, X4, showing profiles 

 of camarophorium and spondylium, USNM 142067. 



Plate 7 



1-la. — Cyclothyris, X 1, Cretaceous 149 



1. C. vespertilio (Brocchi), Charente, France; USNM 142562, illus- 

 trating remarkable external mimickry of some Permian species of 

 Stenoscisma. 



la. Cyclothyris compressa (Lamarck), Ruhr, Germany; USNM 

 142563, externally like Permian Torynechus, emphasizing apparent 

 close relationship of stenoscismatoid and uncinuloid shapes in widely 

 disparate brachiopod groups. 



