PLATE III. 



ISISTIUS BRASILIENSIS Q. G. Page 34. 



Fig. 1. Cartilages of the right ventral fin and the pelvis. 



Fig. 2. Anal aperture, with abdominal pores, opening of intestine, etc. 



Fig. 3. Spiral intestine, lower end of stomach, pancreas, intestinal ctecum, etc. 



Fig. 4. Heart, showing the valves of the bulbus. 



Fig. 5. Heart, showing ventricle, auricle, and sinus. 



Fig. 6. Eight side of shoulder girdle, with cartilages of the pectoral fin. 



Figs. 7-9. Scales from the upper part of the mid flank, enlarged. 



