AMERICAN ASSOCIATION ADVANCEMENT OF SCIENCE. 631 
are thrown respectively a little penn sre of the anal fin and the ee 
e caudal 
which culminated in the formation of the projecting “nose” so charac- 
teristic of the old 
specimens, he was Fig. 151. 
led e'c 
fn the caudal be- Orthagoriseus mola (adult, greatly reduced). 
came a pointed fin. 
Along the asc portion of these young fishes is a fleshy ridge, ran 
deta saisis d from the body, and armed with several rows of small s 
The back, for Ll half the distance in front of the dorsal fin, jm a 
2 raised fleshy ridge. 
dai red Sais were mentioned in connection with the skel- 
vee of the young and the changes which take place in its growth. The 
neural spines of the 5th to the 15th vertebra -are closely packed to- 
gether with the interneural spines, and extending backwards support 
