THE FISHES OF NEW JERSEY. 449 
Tessellated. Marked with little checks or squares like mosaic work. 
Thoracic. Relating to the chest. 
Thoracic fins. So called when attached immediately below the pectorals, as 
in the perch, etc., the pelvic bones being fastened to the shoulder- 
girdle. 
Trenchant. Compressed to a sharp edge. 
Truncate. Abrupt, as if cut off square. 
Tubercle. A small excresence like a pimple. 
Type. (Of the genus.) <A species on which a genus is based. 
Type. (Of the species.) A particular specimen on which the original specific 
description was based. 
Type locality. The particular place or locality where the type specimen was 
found. 
Typical. Of a structure most usual in a given group. 
Ultimate. Last or farthest. 
Vent. Anus. 
Ventral. Relating to the abdomen. 
Ventral fins. Paired fins below or behind the pectorals corresponding to the 
hind limbs of other vertebrates. 
Ventral plates. A row of plates along belly between throat and vent. 
Ventricle. One of the thick-walled chambers of the heart. 
Versatile. Capable of being turned either way. 
Vertebra. One of the spinal column bones. 
Verticle. Up and down. 
Verticle fins. Fins of the median line of the body as the dorsal, anal and 
caudal. 
Villiform. Usually of slender crowded teeth in Velvety bands. 
Viscous. Slimy. 
Viviparous. Bringing forth living young. 
Vomer. A bone immediately behind maxillaries in front part of roof of 
mouth. 
Zygapophyses. Points of bone affording more or less definite articulation to 
the vertebre. 
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