374 Fretp Museum or Naturat History — Zoétocy, Vor. X. 
Spinous. Stiff or composed of spines. 
Striate. Striped or streaked. 
Suborbital. The bone immediately below the eye. 
Supraoccipital. The bone at posterior part of skull. 
Suture. The line of union of two bones, as in the skull. 
Symphasis. The tip of chin; point of juncture of the two bones of lower 
jaw. 
Synonym. A different word having the same meaning; a technical 
name given to a fish already described is said to be a synonym. 
Synonymy. A list of technical names applied to a certain genus or 
species. 
Tail. In ichthyology the part posterior to the anal fin. 
Temporal. Referring to the region of the temples. 
Terete. Cylindrical or tapering. 
Thoracic. Pertaining to the thorax; said of the ventral fins when 
attached beneath the pectorals. 
Trenchent. Compressed to a sharp edge. 
Truncate. With a square or straight margin. 
Tubercle. A small projection, like a pimple. 
Type. The particular specimen upon which the original description of 
the species was based or the species upon which was based the genus 
to which it belongs. 
Type locality. The particular place or locality at which the type was 
collected. 
Vent. The posterior opening of the alimentary canal. 
Ventral. Relating to the abdomen. 
Ventral fins. The paired fins behind, in front of or below the pectoral 
fins, corresponding to the hind limbs in the higher vertebrates. 
Ventral plates. The plates lying on the belly. 
Vertical fins. The fins on the median line of the body; the dorsal, 
caudal and anal fins. 
Villiform. Slender, minute teeth crowded into compact patches or 
bands. 
Viviparous. Bringing forth living young, 
Vomer. A bone in the center of the roof of the mouth, just behind the 
premaxillaries, often bearing teeth. 
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et ee 
