1. MUGIL. 413 



rate length ; the abdominal vertebra; have strong and broad parapo- 

 physes, from whicli the slender ribs are suspended. The neural spines 

 of the first seven vertebra) are short, and dilated into more or less 

 confluent lamelte ; the first interneural is spatulate, with a ridge on 

 each side, and attached to the seventh vertebra. The other neural 

 and haemal spines are slender and rather short ; two or three inter- 

 neurals of the second dorsal and two or three interhasmals correspond 

 to one neui-al or hajmal ; the first two interneurals of the second 

 dorsal fin are behind the apophysis of the thirteenth vertebra. 



lines. 



Length of the first vertebra 4 



of the sixth and twelfth vertebrte .... 5 



of the twenty-third vertebra 31 



of the abdominal portion 56 



of the caudal portion 59 



Si/no2:>s!s of the Species. 



I. Orbit with the adipose eyelid well developed, covering at least a third 

 of the iris posteriorly. Upper lip not very thick. 



A. Anal fin with eight soft rays. 



a. L. lat. 40-45. 



a. The niaxillaiy is entirely hidden, or only a narrow lateral stripe 

 of it is visible. 



* Mandibidary angle obtuse ; pectoral above the middle of the 



body 1. M. ceplialus. 



* Mandibulary angle obtuse; pectoral on the middle of the 



tody 2. M, liueatus. 



* The mandibulary angle is a right one ; the height of the body 



is one-fourth ofthe total length. 3. M. constautias. 



* The mandibidary angle is a right one ; the height of the 



body is one-fifth of the total length ; the anterior dorsal 

 spine is on the middle, between snout and base of the cau- 

 dal fin 4. M. cephalotus. 



* The mandibulary angle is a right one ; the height of the body 



is one-fifth of the total length ; the anterior dorsal spine is 

 nearer to the snout than to the base of the tail. 



5. M. rammelsbergii. 



* The mandibulary angle is acute . 6. M. dobula. 



/3. The extremity of the maxillary is not hidden by the prajor- 



hital ; . 7. M. hsematochilus. 



(y. The upper lip is obliquely trimcated below the snout. 



8. M. perusii.) 



b. L. lat. 32-35 9. M, liza. 



c. L. lat. 30 10. M. subviridis. 



