A NEW GENUS OF GANOID FISH. 479 



Description of Plates XXXI., XXXIL 



Plate XXXI. 



GalamoicMliys calabaricus. 



Fig. 1. Male, dorsal view (natural size). 



Fig. 2. Do. lateral view „ 



Fig. 3. Caudal extremity of Male (double the size of specimen). 



Fig. 4. Do. of Female „ „ 



Fig. 5. Head of Male, lateral view (four times the size of specimen). 



Fig. 6. Do. dorsal view „ „ 



N.B. — Unfortunately the anal and caudal fins, &c, and their fin-rays, have not 

 been drawn with a very minute attention to details. 



Plate XXXIL 



Scales of Calamoichthys calabaricus. 



Fig. 1. A series of scales, from the lateral surface of the fish, including a mesial dorsal (c), 

 and ventral scale (b). The mucous pore is shown at a. 



Fig. 2. Portion of three adjoining rows of scales, external surface. 



Fig. 3. Internal surface of the same scales, showing the manner in which they are locked 



together. 



Fig. 4. A single scale from the middle part of the fish, showing the tooth and internal 

 tubercle, and the sculpture on its external surface. 



Fig. 5. Internal surface of the same scale, with the longitudinal bar along the back and 

 the socket at its posterior termination, for receiving the tooth of the adjoining 

 scale. 



Fig. 6. Highly magnified view of part of the sculptured or external surface of the same 

 scale. 



Fig. 7- One of the median dorsal scales ; its outer or external surface. 



Fig. 8. Lower or internal surface of ditto. 



Fig. 9. One of the median ventral scales; its outer surface. 



Fig. 10. Inner surface of ditto. 



Fig. 11. External surface of scale from posterior part of body, near the anal region, show- 

 ing gradual alteration in form. 



Fig. 12. Internal surface of ditto. 



Fig. 13. First dorsal unlet, showing the forked spine of the finlet, and the general arrange- 

 ment of the scales around it ; seen from above. 



Fig. 14. Lateral view of ditto ; the spine of the first dorsal finlet, being partially raised, 

 showing its secondary ray and finlet (from male fish described). 



N.B. — All these figures are more or less magnified. 



