595 



SPUR MACKREL. 



Scomber Calcar. S. argenteus, dorso subfusco, spinis dorsalibus 



quatuor divergentibus. 

 Silvery Mackre], with brownish back, and four diverging dorsal 



spines. 

 Scomber Calcar. Block. 



Somewhat allied to the former species, but of a 

 broader or shorter shape : length ten or twelve 

 inches : before the dorsal fin four very strong spines, 

 diverging in such a manner as to bear some resem- 

 blance to a spur : first ray of the dorsal fin consists 

 also of a strong spine : before the anal fin two 

 strong spines connected by a membrane : dorsal 

 and anal fin of similar size, and continued nearly 

 to the tail, which is strongly forked. Native of the 

 African seas. 



/ RHOMBOID MACKREL. 



Scomber Rhombeus. S. argenteus, corpore rkombeo, squamis 

 parvis. 



Silvery Mackrel, with rhombic body and small scales. 

 Centrogaster argenteus. Lin. Gmel. 



Length about five inches : shape rhomboid : 

 colour silvery, with very minute scales : dorsal and 

 anal fin triangular at the fore-part and scaly at the 

 base : tail glaucous, and slightly divided. Native of 

 the Arabian seas. Observed by Forskal. 



