No. 1596. DALMANELLAS OF THE CHEMUNG— WILLIAMS. 63 
; Jenga JOC 
Dalmanella tioga. 
Fig. 1. Mold of exterior of a brachial valve. 
3. Mold of exterior of a pedicle valve. Chemung formation, lower part 
of Cayuta member, in section southeast side of Hawley Hill, west of 
Elmira, New York. 
2. Mold of exterior of a large specimen of brachial valve. Chemung 
formation, Granville Center, Bradford County, Pennsylvania. 
4. Mold of exterior of a pedicle valve. ° Chemung formation, lower part of 
Cayuta member, Catlin, Chemung County, New York. 
5. Mold of interior of a large specimen of “brachial valve. Chemung 
formation, Granville Center, Bardford County, Pennsylvania. 
7, 10. Molds of interior of brachial valves of normal size. Chemung 
formation, lower part of Cayuta member, Elmira, New York. (No. 
7 from east side river about a mile north of Big Island; No. 10 from 
Hawley Hill, west of Elmira.) 
9. Mold of interior of brachial valve. Chemung formation, lower part of 
Cayuta member, Catlin, Chemung County, New York. 
12. Mold of interior of pedicle valve. Chemung formation, lower part of 
Cayuta member, Hawley Hill, west of Elmira. 
Dalmanella elmira. 
Figs. 6, 8. Molds of exterior of brachial valves. Chemung formation, Cayuta 
member, ravine opposite Spencer Lake, Spencer, Tioga County, New 
Works 
11, 18. Molds of interior of brachial valves. Chemung formation, lower 
part of Cayuta member, Catlin, Chemung County, New York. 
14, 17. Molds of interior brachial valves. Chemung formation, Cayuta 
member, Spencer Lake Ravine, Spencer, Tioga County, New York. 
15, 16. Molds of interior of pedicle valves. Chemung formation, lower 
part Cayuta member, Catlin, Chemung County, New York. 
PLATE IV. 
Dalmanella carinata. 
Figs.1, 2. Molds of interior of pedicle valves. Chemung formation, near top 
~ Cayuta member, Spencer Lake Ravine, Spencer, Tioga County, New 
York. 
4, 6. Molds of interior of brachial valves. Chemung formation, near top 
of Cayuta member, Spencer Lake Ravine, Spencer, Tioga County, New 
York. 
Dalmanella carinata var. epsilon. 
Wigs.3, 5, 7, 8, 9. Molds of interior pedicle valves. Chemung formation, 
near top of Cayuta member; 8 and 8 from Seely Hill, upper part of 
West Danby section, West Danby, Tompkins County, New York; 5, 7, 
9 from Swartwood Tropideloptus zone, top of Swartwood section, 
Austin Hill, Erin, Chemung County, New York. 
