

FISHES OF THE FAMILY LORICARIID#. 
PLATE XII. 
Fig. 1. Ancistrus oligospilus: 1a, head seen from above, p. 232. 
2. »  setosus: 2a, head seen from above, p. 239. 
3. »  guentheri: 3a, head seen from above, p. 241. 
4 
»  platycephalus: 4a, head seen from above, p. 235. 
