14 
ACAXTHODII. 
38514-15. Crushed specimen, and another fish, lateral aspect; 
Turin Hill, Forfar. Purchased, 1864. 
41362. Very small fish ; Turin Hill. Purchased , 1869. 
One 
46307. Four’ specimens; Turin Hill. Purchased , 1875. 
Fom.v- SpgCMvsCKS -*-£ to V60\xr- P60I9.8. 
P. 126, P. 140. Contorted and crushed small individual, in counter¬ 
part, and an imperfect large fish; Turin Hill. 
Pu r chased, 1880. 
P. 1331. Two specimens; Turin Hill. Egerton Coll. 
P. 5081. Well-preserved specimen ; Turin Hill. 
Presented l>y J. E. Lee, Esq., 1885. 
Acanthodes afEnis, Whiteaves. 
1887. Acanthodes mitchellii?) ox Acanthodes affinis , J. F. Whiteaves, 
Trans. Hov. Soc. Canada, vol. iv. sect. iv. p. 107. 
1889. Acanthodes affinis, J. F. Whiteaves, Trans. Hoy. Soc. Canada, 
vol. vi. sect. iv. p. 91, pi. v. fig. 1. 
1890. Mesacanthus affinis, R. H. Traquair, Geol. Mag. [3] vol. vii. 
p. 16. 
Type. Nearly complete fish; Geological Survey of Canada, 
Ottawa. 
A very small species, about 0-04 in length. Body elongated and 
slender, the greatest depth being contained about five times in the 
total length. Pelvic fins large, situated somewhat nearer to the 
anal than to the pectorals ; pelvic spines more than half as large as 
the pectorals, and about equal in size to the anal. Dorsal spine 
slightly behind the anal, scarcely larger than the latter. 
Form. 6f Loc. Upper Devonian : Scaumenac Bay, P. Q., Canada. 
P. 5975. Typical specimen, 0*03 in length. Purchased , 1889. 
Two small Acanthodian fishes of the same type as the preceding 
are also known from supposed Devonian strata in Siberia, but there 
are no examples in the Collection. They are described as follows :— 
Acanthodes lopatini, J. V. Rohon, Mem. Acad. Imp. Sci. St. Peters- » xl 
bourg, [7] vol. xxxvi. no. 13 (1889), p. 3, pi. i. figs. 1-3, 
' 6-9, 11, 12, 15-17.—Devonian (?); Isyndschul, near 
River- Seresch, Govt, of Tomsk, Siberia. [Imperfect fishes; 
Imperial Academy of Sciences, St. Petersburg.] 
Acanthodes parvulus, J. V. Rohon, ibid. p. 7, pi. i. fig. 5.—Ibid. 
[Imperfect fish, displaying caudal region ; Imperial Acad¬ 
emy of Sciences, St. Petersburg.] 
r 
