SEMION 0TLD2E. 
49 
Trunk deeply fusiform or cycloidal; no 
ossifications in notocliordal sfieatli; 
teeth tritoral; opercular apparatus 
reduced ; fulcra absent, and dorsal 
fin elongated.. Pycnodontid^: (p. 189.) 
II. Mandibular suspensorium inclined back¬ 
wards and gape of mouth wide. 
Trunk eiongate or fusiform ; vertebrae 
very rarely more than incomplete 
rings ; marginal teeth large and 
conical, becoming minute on most 
of the inner dentigerous bones; 
premaxillae in contact mesially ; 
fulcra large, and dorsal fin short . . Eugnathid^ (p. 285). 
Trunk elongate or elongate-fusiform ; 
vertebrae variable, often complete 
discs; marginal teeth large and 
conical, inner teeth mostly minute ; 
premaxillae in contact mesially; 
fulcra minute or wanting, and dorsal 
fin variable in length. AiunDiE (p. 360). 
Trunk elongate-fusiform; notochord per¬ 
sistent, sometimes with very feeble 
ossifications in the sheath ; ethmoid 
fused with the vomers and forming 
a prominent rostrum, which sepa¬ 
rates the premaxillae ,• teeth large 
and conical on part at least of all 
the dentigerous bones; fulcra minute 
or absent, fin-rays slender and closely 
set, and dorsal fin short. Pa zcormidje (p. 374). 
Family SEMIONOTIDNE. 
Trunk more or less deeply fusiform, rarely cycloidal. Cranial 
and facial bones all robust and opercular apparatus complete, 
but brarchiostegals sometimes reduced ; parietals meeting in the 
middle line ; mandibular suspensorium vertical or inclined forwards, 
and gape of mouth small; teeth styliform or tritoral, especially 
well-developed on the inner bones of the mouth, and with vertical 
successors. Notochord persistent, the vertebras never advancing 
beyond the annular stage. Fin-rays robust, the majority well¬ 
spaced, articulated and divided distally ; fulcra large ; dorsal fin not 
extending more than half the length of the trunk. Scales rhombic, 
except occasionally in the caudal region. 
The osteological characters of this family are best known in 
Lepidotus and Dapedius , and a detailed description of each of those 
genera is given below (pp. 78, 128). 
PART III. E 
