CENTHISCIDJE. — SOLENOSTOM ATTD.2!!. 
379 
Amphisile heinrichi, Heckel. 
1850. AmphUyle heinrichi, J. J. Heckel, Denkschr. k. Akad. Wisa., 
^ math.-naturw. Cl. vol. i. p. 224, pi. xxii. 
1870. Amphysik heinrichii, H. E. Sauvage, Bull. Soc. Gdol. France, [2] 
vol. xxvii. p. 400, pi. ix. figs. 1-3. 
Type. Imperfect fish. 
A species attaining a length of about 0-05. Length of head with 
opercular apparatus nearly equalling the length of the dorsal shield 
behind the operculum ; maximum depth of trunk slightly exceeding 
°ne quarter of the same measure. Operculum and suboperculum 
nearly equal in size, the former ornamented with radiating striae. 
Anal fin with 13 or 14 rays. Dermal armour finely tuberculated ; 
the posterior terminal spine longitudinally ribbed and slightly 
shorter than its pedicle. 
Form. Loc. Oligoceno : Krakowiza, near Imwald, Galicia ; 
Vienna 1 ; Hammerstein, Baden * ; Fldrsheim, Bhein-Hessen ; Miil- 
hausen, Alsaco 3 ; Froidefontaine. 
*042, P. 8788. Four fragmentary specimens, one being in 
counterpart ; Fldrsheim, Rhein-Hessen. 
Purchased, 1893, 1898. 
An imperfectly known species, not represented in the Collection, 
bas also been described as follows : — 
Amphisile longirostris, L. Agassiz, Feues Jahrb. 1835, p. 295 
(name only), and Poiss. Foss. vol. iv. (1844), p. 275. 
Centriscas velitaris, G. S. Yolta, Ittiolit. \ eronese (1796), 
pi. lxiii. fig. 2 ( errore ). Centriscus longirostris, H. D. de 
Blainville, Nouv. Diet. d’Hist. Fat. vol. xxvii. (1818), 
p. 339. — Upper Eocene : Monte Bolca, near \ erona. 
[Imperfect fish ; unknown.] 
Family SOLENOSTOMATIDzE. 
Trunk more or less elongated ; snout much produced into a tube, 
a nd small toothless mouth terminal. Gills tufted, in form of 
rounded lobes ; opercular apparatus reduced to operculum and very 
few branchiostegal rays ; gill-opening wide. Two dorsal fins, the 
1 E. Suess, Sitzungsb. k. Akad. Wiss., math.-naturw. Cl. vol.liv. pt. i. (1806) 
H. von Meyer, Neues Jahrb. 1863, p. 449. 
Schimper, L’Institut, vol. xxvii. (1859), p. 193. 
