AULOHEYNCHID^.—FISTULARIIDED. 
3 
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Aulorliynciius sumatrensis (W. v. d. j\Iarck). 
1870, Protosyngnathiis suinatrensisj W. von der Marck, Palaeontcgr. 
vol. xxii, p. 407, pi. xxiii. fig. 1. 
1876. Aulkcops sumatrauus, A. Giintlier, Geol. Mag. [2] vol. iii 
p, 434, pi, XV. fig, 1, 
Type, Imperfect fish ; Royal Geological Museum, Dresden. 
The type species of the so-called Protosyngnathus, attaining a 
length of about 0'35. Length of head with opercular apparatus 
occupying about one quarter of the total length of the fish ; caudal 
pedicle shorter than the head. All external bones finely tuber- 
culated. Vertebrae apparently 27 in the abdominal, 31 in the 
caudal region. Dorsal and anal fins arising at the 12th caudal 
vertebra, each comprising about 12 rays. 
Form, 4' Log. Freshwater Tertiary Formation : Padang, Sumatra. 
47507. Specimen described and figured by Gunther, loc. cit. The 
caudal fin-rays are imperfect distally, so do not exhibit 
the precise shape of the fin. 
Presented hy Herr R. D. M. Verheelc^ 1876. 
47508-11. Four imperfect specimens noticed by Gunther, loc, cit. 
Presented hy Herr R. D. M. Verheelc, 1876. 
'Family FISTULARIID^. 
Trunk elongated, and snout much produced into a tube. Pre¬ 
maxilla excluding maxilla from upper margin of mouth, which is 
small and terminal; teeth minute or absent. Gills pectinated; 
opercular apparatus complete. Four anterior vertebrae much 
elongated and fused together, all those of the abdominal region and 
some anterior caudals with large transverse processes; ribs rudi¬ 
mentary or absent. Pelvic fins without spine, but with 5 or 6 
divided rays ; free spines in front of dorsal fin rudimentary or 
absent; anal fin without anterior spiue, opposed to the soft dorsal; 
caudal fin distinct. Skin naked or with small scales. 
Only three genera of this family are known, two being still widely 
distributed in tropical seas. 
Synopsis of Genera, 
No free dorsal spines; caudal fin forked, with 
elongated median rays; no scales. Fistularia (p. 374). 
A series of free dorsal spines ; caudal fin rhombic, 
without elongated ray; small ctenoid scales 
present ... Aulosfoma (p. 375). 
Imperfectly known, but all caudal fin-rays much 
elongated; no scales . Urosphen (p. 376). 
