SYNGNATHID^. 
383 
Imperfectly known extinct species are referred to this genus 
under the following names, but are not represented in the 
Collection:— 
Synjnaihus affiais, D. G. Kramherger, Ead Jugoslav. Akad. 
vol. cvi. (1891),. p. 99, pi. lii. fig. 4.—Upper Miocene 
(Sarmatian) ; Dolje, Croatia. [Imperfect fish ] Geological 
Museum, University of Agram.] 
Syngnathm holcensis, A. de Zigno, Mem. E. Istit. Teneto, 
vol. xxiii. (1887), p. 24, fig. 6.—Upper Eocene ; Monte 
Bolca, near Yerona. [Imperfect fish ; Zigno Collection, 
University of Padua.] 
Syngnathus Tiedceli, A. de Zigno, loc. clt. vol. xviii. (1874), p. 295, 
pi. x. fig. 4.—Upper Eocene; Monte Bolca, near Yerona. 
[Imperfect fish ; Zigno Collection, University of Padua.] 
Syngnathus helmsi, E. Steindachner, Sitzungsb. k. Akad. Miss., 
math.-naturw. Cl. vol. xl. (1860), p. 571, pi. hi.—Upper 
Miocene (Sarmatian); Eadoboj, Croatia. [Imperfect 
fishes; Court Museum, Yienna.] S S. 
Genus CALAMOSTOMA, Agassiz. 
[Poiss. Eoss. 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). 
1796. Pegasus natans, G. S. Yolta, Ittiolit. Yeronese, p. xxi. pi. v. 
fig. 3 (en'ore). 
1818. Syngnathus breviculus, H. D. de Blainville, Nouv. Diet. d’Hist. 
Nat. vol. xxvii. p. 339. 
1833-44. Calamostoma breviculum, L. Agassiz, Poiss. Foss. vol. ii. 
pt. i. p. 18, pt. ii. p. 276, pi. Ixxiv. fig. 1. 
Type. Imperfect fish ; Museum of Natural History, Paris. 
The type species, attaining a length of about 0-7. Length of 
head with opercular apparatus slightly exceeding two thirds of 
length from pectoral arch to base of caudal fin. Five longitudinal 
series of scutes on flank; no external ornament. 
Form. Loc. Upper Eocene : Monte Bolca,- near Yerona. 
P.9430. ell-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. 
