INARTICULATA, ARTICULATA. 
Brack. 5 
Discinidj:. 
Distinct scutellum , n. sp., Tertiary, Imraendorf ; Dreger, p. 182. 
Craniid.®. 
Craniella, n.g.: with ventral valve completely fixed, no limbus properly 
so called, and subcentral adductors approximated to the dorsal valve ; for 
0 . meduanensis, 11 . sp., France, Devonian ; CEhlert, (2) p. 101, pi. x, 
fig. 1. 
ARTICULATA. 
Production. 
Chonetes tumidus , n. sp., fossil, Ohio ; Herrick, iii, p. 36, pi. ii, fig. 21. 
C. Icevis , n. sp., Iowa ; Keyes, p. 229, pi. xii, fig. 3. 
Productua rarico status, pi. iii, fig. 19, (?) vol. iii, pi. iii, fig. 28, P. new - 
berryi , pi. x, figs. 24 & 35, P. rushvillensis , pi. iii, fig. 15, P. nodocostatus , 
n. spp., Ohio; Herrick, pp. 19-23. 
Strophomenidn. 
Orthis acutiloba , n. sp., Niagara Shales ; Ringueberg, p. 134, pi. vii, 
fig. 5. 
Spiriferidn. 
Athyris ashlandensis , n. sp., Ohio ; Herrick, p. 24, pi. iii, fig. 6. A. 
leveillei, p. 77, A. rotundata, p. 78, A. globulina , p. 78, A. vittata, p. 81, A. 
ingens , p. 83, A. ornata , p. 84, A. membranacea , p. 89, A. waageni , p. 90, 
Carboniferous of Belgium ; Koninck. 
Retzia intermedia , p. 93, R. multiplicata, p. 95, Carboniferous of Bel- 
gium ; id. 
Rhinchospira (?) ashlandensis , n. sp., Ohio ; Herrick, p. 25, pi. iii, 
fig. 16. 
Spirifer ventricosus , p. 116, S. pentagonus, p. 117, S. acutus, p. 117, S. 
suavis, pp. 118 & 131, S. spissus, p. 118, S. subconvolutus, p. 128, S. capil - 
laris, p. 130, S. plicatilis, p. 131, S. papilionaceus , p. 132, S. eximius, p. 136, 
Carboniferous of Belgium ; Koninck. S. tenuispinatus, pi. ii, fig. 4, 
deltoideus, pi. ii, fig. 7 ; Herrick, p. 27. S. winchelli , n. sp., fossil, Ohio ; 
id. iii, p. 46, pis. ii, fig. 16, & v, figs. 2-5. S. substrigosa, n. sp., Devonian, 
Iowa; Webster, p. 1101. 
Spiriferina peracula , p. 101, S. mblleri , p. 103, S. laminosa , p. 103, Car- 
boniferous of Belgium ; Koninck. 8. gillieroni, n. sp., M. Lias, Switzer- 
land ; Haas, p. 72. S. depressa , n. sp., fossil, Ohio; Herrick, iii, p. 47, 
pi. x, fig. 3. 
Atrypidj:. 
Atrypa Jlexuosa , n. sp., fossil, Cumberland ; Marr & Nicholson, p. 725, 
pi. xvi, fig. 20. 
