194 
REPORT—1843. 
Synoptical Table of British Fossil Fishes, arranged in the order of 
the Geological Formations. 
By M. AGassiz. 
SILURIAN SYSTEM. 
I. Piacoipes. 
Ichthyodorulithes. 
Onchus Murchisoni, 4g. P. foss. iii. p. 6. t. 1. 
f.1,2. Murch, Sil. Syst. p. 607. t. 4. 
f.9-11. Ludlow. 
Onchus tenuistriatus, 4g. P. foss. iii. p. 7. t.1. 
£.10. Murch. Sil. Syst. p. 607. t. 4. f. 57 
-59, Ludlow. 
Species of which the family has not yet been strictly decided, 
Thelodus parvidens, 4g. in Murch. Sil, Syst. 
p- 605. t. 4. fig. 34, 36. Ludlow. 
Sclerodus pustuliferus, 4g. in Murch, Sil. 
Syst. p. 605. t. 4. f. 27-32, 60-62. Lud- 
low. 
Plectrodus mirabilis, 4g. in Murch. Sil. Syst. 
p. 605, t.4. f. 14-26. Ludlow. 
Plectrodus pleiopristis, 4g. in Murch. Sil. 
Syst. p. 606. Ludlow. 
Sphagodus pristodontus, 4g. in Murch. Sil. 
Syst. p. 605. t. 4. f.1-3, 6. Ludlow. 
Pterygotus problematicus*, 4g. in Murch. Sil. 
Syst. p. 605. t.4. f. 4,5. Ludlow. 
DEVONIAN SYSTEM. 
I. Piacoipss. 
Ichthyodorulithes. 
Onchus arcuatus, 4g, P. foss. iii. p. 7. t. 1. 
f. 3-5. Murch. Sil. Syst. p, 598. t. 2. 
f,10,11. Bromyard. 
Onchus semistriatus, 4g. P. foss. iii. p. 8. t. 1. 
£.9. Murch. Sil. Syst. p. 598. t. 2. f. 12, 
13. Southstone Rock. 
Parexus recurvus, 4g. Msc. Balruddery. 
Ctenacanthus ornatus, 4g. P. foss. iii. p. 12. 
t.2.f.1. Murch. Sil. Syst. p. 597. t. 2. 
f.10. Wales. Sapey. 
Ptychacanthus dubius, 4g. P. foss. iii. p.176. 
Abergavenny. 
Clematius reticulatus, 4g. Msc. Balruddery. 
Cestraciontes. 
Ctenoptychius priscus, 4g. P. foss. iii. p.173. Ecosse. 
II. Ganoipzs. 
Lépidoides. 
Dipterus macrolepidotus, Sedgw. § Murch. 
Geol. Tr. t. 15. f. 1-3; t.16.f.2. dg. P. 
foss. ii. p.115.t. 2.f.1,4;t.2a. Id. Rep. 
1842. Bron. Leth. ii. p. 125. Murch. 
Sil. Syst. p. 599. D. brachypygopterus, 
S. & M. Geol. Tr. t.17. f.1-38. dg. l.c. 
t. 2. f. 2, D. Valenciennesii, Geol. Tr. 
t.16.f.1,3. 4g. lc. t. 2. f. 3. (Catopte- 
rus analis, p. 23-27.) Caithness. How- 
burn Head. PentlandFirth. Widel. Ban- 
niskirk. Clythe. Liebster. Latheron 
Wheele. Downton Hall. 
Osteolepis arenatus, 4g. P. foss. ii. p. 122. 
t.2d.f.1-4. Id. Rep.1842. Esox, Pentl. 
Geol. Tr. (n.s.)ii. p, 364. O. arenaceus, 
Murch. Sil. Syst. p. 601. Gamrie, 
Osteolepis macrolepidotus, Val. & Pentl. Geol. 
Tr. iii. p.143. Ag. P. foss. ii. p.119. t. 20. 
f.1-4; t.2¢.f.5,6. Id. Rep.1842. Mureh. 
Sil. Syst. p.601, Caithness. Pomona. 
Orkney. Cromarty. 
Osteolepis microlepidotus, Val. § Pent. Geol, 
Trans. iii. p. 143. 4g. P. foss. ii. p. 121. 
t. 2c. f.14. Id. Rep. 1842. Murch. Sil. 
Syst. p.601. Caithness. Pomona. Ork- 
ney. 
Osteolepis major, 4g. Rep. 1842, Lethen, 
Gamrie, 
Acanthodes pusillus, 4g. Rep. 1842. Gor- 
don Castle. 
Diplacanthus crassispinus, 4g. Rep. 1842. 
Stromness. Orkney. Caithness. 
Diplacanthus longispinus, dg. Rep. 1842. 
Lethen Bar. Cromarty. 
Diplacanthus striatulus, 4g. Rep. 1842. Le- 
then Bar. 
Diplacanthus striatus, 4g. Rep, 1842. Cro- 
marty. 
Cheiracanthus Murchisoni, 4g. P. foss. ii. p. 
126, t.1e. f.3,4. Id, Rep. 1842. Gam- 
rie. 
Cheiracanthus minor, 4g. P. foss. ii. p. 127. 
* Lam lately persuaded that this fossil belongs to the class of the Crustaceans. 
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