﻿1082 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 



Plate 67 

 Chaulistomella 



Page 



A. Chaulistomella ridleyensis Cooper, new species 443 



(1-5) Respectively pedicle, anterior, brachial, posterior, and side views of a com- 

 plete specimen, X I, paratype, 117008a; (6) interior of a large pedicle valve 

 showing muscle scars, X I, paratype, ii70o8f ; (7) interior of the brachial valve, 

 X 1, paratype, 117008b. 



Ridley formation (lower 20 feet) , Marshall Knobs, 5 miles south of Murfrees- 

 boro, Murfreesboro (15') Quadrangle, Tenn. 



B. Chaulistomella obesa Cooper, new species 441 



(9-13) Respectively side, brachial, posterior, anterior, and pedicle views of a com- 

 plete specimen, X 1, paratype, 110561a. 



Bromide formation (Mountain Lake member), West Spring Creek section, 

 east of Pooleville, Murray County, Okla. 

 (8) Exterior of a large specimen seen in pedicle view, X 1, paratype, 117991a; 

 (14-16) respectively side, brachial, and pedicle views of a specimen with details 

 of the ornamentation well preserved, X I, holotype, 110562a. 



Bromide formation (Mountain Lake member), sec. 25, T. 2 S., R. I E., f mile 

 west of U. S. Highway 77, Carter County, Okla. 



C. Chaulistomella nitens Cooper, new species 441 



(17-21) Respectively anterior, side, posterior, brachial, and pedicle views, X 1, of 

 the holotype, 117003a; (22) interior of the brachial valve, X 1, paratype, 

 117003c; (23) cardinalia of the preceding enlarged, X 2, to show details. Note 

 accessory tooth on outside of socket. 



Bromide formation (Mountain Lake member), road cut on the east side of 

 Oklahoma Highway 18, 1.8 miles south of Sulphur, Murray County, Okla. 



D. Chaulistomella mun-dula Cooper, new species 440 



(24-28) Respectively posterior, anterior, side, pedicle, and brachial views of a com- 

 plete specimen, X I, holotype, 117000a; (29) interior of the pedicle valve, X 2, 

 showing details of the muscle and pallial marks, paratype, ii700oe. 

 Horizon and locality same as preceding. 



Plate 68 



Campylorthis, Chaulistomella, Multicostella 



A. Multicostella platys (Billings) 421 



(1-3) Pedicle, side and brachial views of the holotype, X 1, G.S.C. 1034. 



St. Martin formation, Island of Montreal, Quebec, Canada. 

 (4) Brachial interior, X 2, hypotype, Carnegie Mus. 5467. 



Crown Point formation, near Fair Grounds, Plattsburg, Plattsburg (15') 

 Quadrangle, N. Y. 



B. Campylorthis subplana Ulrich and Cooper 431 



(5, 6, 8, 11) Respectively pedicle, pedicle tilted to show interarea, brachial, and 

 side views of a complete individual, X l, holotype, 108199a; (12) posterior view 

 of preceding, X ii, showing pseudodeltidium and chilidium; (7) pedicle interior, 

 X 1, paratype, 108199c; (9) brachial interior, X 1, paratype, 108199b; (10) 

 posterior of brachial interior, X 2, showing cardinalia in detail, paratype, 

 io8i99d. 



Barnhart formation, on old road, 1 mile northwest of Chicago Summer School 

 Camp, NW^SWi sec. 32, T. 37 N., R. 9 E., Weingarten (15') Quadrangle, Mo. 



C. Chaulistomella inaequistriata Cooper, new species 435 



(15-17, 19, 20) Respectively pedicle, side posterior, anterior, and brachial views of 

 a complete specimen, X 1, holotype, 98212a; (13, 18) respectively X 1 and X2 



