4l>0 Mr. (5. T. Rejran on 



O' 



Synguathidae. 

 Dori/icJithi/s millepunctatus, Kaup. 

 Folohy, E. Madagascar. 



Centropomidae. 



Amhassis commersonii, (Juv. & Val. 

 Fololiy aiul Ambilo, IC. Matlagascar. 



Liognathidae. 



Gerres JiJamentosuSj Cuv. & Val. 

 Ambilo (lagoons). 



Gerres methueni, sp. n. 



Depth of body 2^ in tiie leiigtli, length of head 3 to 3|. 

 Snout as long as or a little shorter than diameter of eye, 

 which is 3 to 3^ in the length of head and nearly equal to 

 the interorbital width. JNlaxillary extending to below anterior 

 ^ of eye ; 3 or 4 series of scales on cheek ; 7 or 8 gill-rakers 

 on lower part of anterior arch. 44 scales in a longitudinal 

 series, 5 beteen lateial line and scaly sheath at base of spinous 

 dorsal, 12 or 13 below lateral line, 7 or 8 from base of pectoral 

 to middle of chest. Dorsal X 9; third spine nearly as long 

 as or a little longer than second, ^ to ^ length of head. 

 Anal III 7 ; second spine a little longer than third, ^ to ^ 

 length of head. Pectoral longer than head, nearly or quite 

 reaching origin of anal. Caudal widely forked. Caudal 

 peduncle as long as or a little longer than deep. Dark 

 hnigitudinal stiipes along the series of scales. 



Three specimens, lOO to 140 nun. in total length, from 

 Folohy and lagoons at Ambilo, E. Madagascar. 



This species is distinguished from Gerres lineolalus^ Giinth., 

 by the dee[)er form and the shorter second dorsal spine. 



Liogttathas dussumiei i, Cuv. & Val. 

 Ambilo (lagoons) and Folohy, 



Monodactylidaa. 



Monodactijlus argentms, Linn. 

 Ambilo (lagoons). 



