THE STRUCTURE AND ACTIVITIES OF A FISH. 177 
Im'bri ca ted (Lat. imbrex , gutter- 
tile), overlapping. 
Max'il la ry (Lat. macero, to soft¬ 
en), pertaining to the jaw; com¬ 
monly to the upper jaw. 
Mes'en te ry (Gr. mesos , middle, 
and enteron, intestine), in verte¬ 
brates the membrane holding 
the intestines in place. 
Neu'ral (Gr. neuron , a nerve), per¬ 
taining to the nerves. In verte¬ 
brates it is applied to the dorsal 
cavity of the body. 
No to chord (Gr. not os, back, and 
chorde , a cord), a rod of carti¬ 
lage from which the vertebral 
column develops in vertebrates. 
<E soph'a gus (Gr. oisd } will carry, 
and phagein , to eat), the tube 
connecting the throat with the 
stomach. 
0 per'cu lum (Lat. operculum , a 
lid), the gill-cover in fishes. 
Pec'to ral (Lat. pectus , breast), 
pertaining to the breast. 
Tes'sel la ted (Lat. tessellatus , 
checkered), formed in squares 
like mosaic. 
Ver'te bra (Lat. verto , to turn), 
one of the sections of the verte¬ 
bral column. 
Vis'ce ral (Lat. viscera , internal 
organs of the bodyi, pertaining 
to the internal organs; applied 
to the ventral cavity in verte¬ 
brates. 
