NATURAL SCIENCES OE PHILADELPHIA. 
169 
Subfamily. AULOSTOMINiE Gill. 
Aulostoma Lac. 
Polypterichthys Bleeker. 
Polypterichthys Bleeker , Natuurkundig Tijdscbrift voor Nederlandscb Indie, 
vol. iv. p. 608. 
Subfamily AULORHYNCHINiE Gill. 
Aulorhynchus Gill. 
Subfamily SIPHONOSTOMINiE Gill. 
Siphonostomus (Klein) Gron. 
Fistularia Linn. 
Channorhynchus Cantor. 
Genus Aulorhynchus Gill. 
Body moderately elongated and almost cylindrical. Tail from the dorsal 
and anal fins elongated conical and slightly depressed, merging into the very 
slender and depressed caudal peduncle. Skin naked. Lateral line marked by 
a continuous row of short canals. Head with the skin naked. Mouth small, 
horizontal, and at the end of a flexible tube about as long as the rest of the 
head. Intermaxillary bones much expanded, and with long and slender pos- 
terior processes. Teeth on the supramaxillary and dentary bones nearly uni- 
serial. Palate edentulous. Nostril with raised margin, rather distant from 
front of eye. Branchiostegal rays 4 — 4. Dorsal spines numerous, equal and 
very short, commencing above the pectorals. Dorsal and anal fins posterior, 
nearly equal, oblong, and elevated in front. CaudaMn small and emarginated. 
Pectoral fins also emarginated, the superior and inferior rays being longest. 
Ventral fins inserted not far behind the bases of the pectoral ; each with a 
slender spine and five branched rays. 
Aulorhynchus fla vidus Gill. 
Tawny, minutely punctulated with black above and on the sides, immacu- 
late beneath. Snout with a lateral yellowish line. Operculum and suboper- 
culum with a golden lustre : the former also punctulated above. Ante-pecto- 
ral or humeral region lustrous golden, bordered abo^e by a blackish band 
parallel with the superior pectoral rays. 
D. spines xxvi. D. 10. A. I. 10. P. 1, 18, 1. V. I. 5. 
The proportions, in hundredths^ are as follows : 
Total length, 5 inches. 100 
Body — Height of body 6 
“ behind dorsal 4| ,, 
Width behind dorsal 4\ 
Head — Length of head *25 
Distance between snout and preoperculum... *18 
“ “ “ “ orbit *12 
“ “ orbits 3 
Height of head 5| 
Greatest width of head 4\ 
Diameter of eye 4 
Dorsal — Distance of dorsal fin from snout *49 
Length of dorsal fin 9 
Greatest height 7 
1861.] 
/// sv 
JUL 22 1987 
library 
