STNOXATHIDm. 
383 
Imperfectly known extinct species are referred to this genus 
under the following names, but are not represented in the 
Collection : — 
Syngnathus ajjtnig, D. G. Kramberger, Had Jugoslav. Akad. 
vol. cvi. (1891), p. 99, pi. iii. fig. 4. — Upper Miocene 
(Sarmatian); Dolje, Croatia. [Imperfect fish ; Geological 
Museum, University of Agram.] 
Syngnathus bolcensis, A. de Zigno, Mem. R. Istit. Yeneto, 
vol. xxiii. (1887), p. 24, fig. 6. — Upper Eocene ; Monte 
Bolca, near Verona. [Imperfect fish ; Zigno Collection, 
University of Padua.] 
Syngnathus heckeli, A. de Zigno, loc. cit. vol. xviii. (1874), p. 295, 
pi. x. fig. 4. — Upper Eocene; Monte Bolca, near Verona. 
[Imperfect fish ; Zigno Collection, University of Padua.] 
Syngnathus helmsi, F. Steindaehner, Sitzungsb. k. Akad. Wiss., 
math.-naturw. Cl. vol. xl. (1860), p. 571, pL iii. — Upper 
Miocene (Sarmatian); Radoboj, Croatia. [Imperfect 
fishes ; Court Museum, Vienna.] 
Genus CALAMOSTOMA, Agassiz. 
[Poiss. Foss. vol. ii. pt. i. 1833, p. 18.] 
Trunk moderately elongated, not dilated. Pectoral fins feeble ; 
dorsal, anal, and caudal fins well-developed ; caudal fin rounded, 
'With few rays. Dermal armour complete. 
Calamostoma breviculum (Blainville). 
1790. Pegasus natans, G. S. Volta, Ittiolit. \eronese, p. xxi. pi. v. 
fig. 3 (errors). 
1818. Sgngnathus breviculus, II. D. de Blainville, ?souv. Diet, dflist. 
Nat. vol. xxvii. p. 339. 
1833-44, Calamostoma breviculum, L. Agassiz, Poiss. Foss. vol. ii. 
pt. i. p. 18, pt. ii. p. 276, pi. lxxiv. fig. 1. 
Type. Imperfect fish ; Museum of Natural History, Paris. 
The type species, attaining a length of about 0 •/. Length of 
head with opercular apparatus slightly exceeding two thirds of 
len gth from pectoral arch to base of caudal fin. Five longitudinal 
series of scutes on flank ; no external ornament. 
Form. <5f Loc. Upper Eocene : Monte Bolca, near 1 erona. 
T. 9430. Well-preserved specimen, wanting dorsal fin ; Monte Bolca. 
A few long rays at middle of ventral border represent 
either a pelvic or an anal fin, probably the latter. 
History unknown. 
