160 
ACTINOPIERYGII. 
temperate regions of the northern hemisphere. It is only definitely 
known among fossils by unimportant fragments of Pleistocene age. 
of which there are none in the Collection. 
The following supposed extinct species is doubtfully deter¬ 
mined :— 
Salmoil) immigratus, D. Gr. Kramberger, Rad Jugoslav. Akad. 
vol. cvi. (1891), p. 102, pi. vii. fig. 4.—Upper Miocene ; 
near Podsused, Croatia. [Portion of trunk; University 
Geological Museum, Agram.] 
The following supposed extinct genus and species is known only 
by the skull, which resembles that of Salmo but has the maxilla 
subcylindric or rod-shaped instead of flat or laminar :— 
Bhabdofario lacusfris, E. D. Cope, Proc. Amer. Phil. Soc. vol. xi. 
(1871), p. 546.—Pliocene; Idaho. [The t 3 ’pe species, as 
large as Salmo salar.'] 
The fish-remains described as follows are supposed to represent 
another extinct genus, Thaumaturus, closely related to Salmo, but 
distinguished by the great obliquity of the cleft of the mouth and 
the crimping of the scales. There are no examples in the Col¬ 
lection. 
Thaumaturus fur catus, A. E. Reuss, Geogn. Skizze aus Bohmen, 
vol. ii. (1844), p. 264; G. C. Laube, Sitzungsb. Ver. Lotos, 
1900, p. 4, figs. 1-5. Aspius furcatus, H. von Me 3 'er, 
Palseontogr. vol. ii. (1851), pp. 59, 64, pi. viii. figs. 1-4. 
Aspius elongatus^ H. von Meyer, ibid. p. 61, pi. xii. figs. 5, 
6.—Lower Miocene : Kutschlin, Bohemia. [The type 
species. Imperfect fish.] 
x\y^Thaumaturus lusatus, G. C. Laube, Sitzungsb. Yer. Lotos, 1900, 
Jit)p. 6.—Lower Miocene: Warnsdorf, Bohemia. [Eish 
- ' ^ ^ showing impression of adipose dorsal fin ; Geological 
Museum, German University, Prague.] 
r ^ 
r 
^ Genus MALLOTUS^ Cuvier. 
[Regne Animal, ed. 2,1829, p. 305.] 
Head and trunk more or less laterally compressed, elongate- 
fusiform. Mouth deeply cleft and dentition very feeble ; mandible 
prominent. Paired fins relatively large, the pelvic pair opposed to 
the short median dorsal; anal fin not much extended; caudal fin 
forked. Scales minute, slightly enlarged along the lateral line. 
Only one species is known. 
