388 



SILUEID.E. 



8 or 9 on lower part of anterior arch. Dorsal I 7, spine § to f length 

 of head, with granular tubercles anteriorly and small serrae posteriorly. 

 Adipose dorsal small, its base about \ or § that of rayed dorsal, about 

 twice as distant from latter as from caudal. Anal 17-20 (12-14 rays 

 branched). Pectoral spine similar to dorsal. Ventral reaching, or 

 nearly reaching, origin of anal. Caudal deeply notched, with long, 

 pointed lobes. Caudal peduncle 2 to 1\ times as long as deep. 



Arias Jieudelotf. 

 Lagos, j. 



Brownish above, silvery on the sides, white beneath ; distal half of 

 pectoral, ventral, and anal fins brown. 

 Total length 500 millim. 



Upper Senegal, Niger, Lagos, Cameroon.— Types, in Paris Museum, 

 examined. 



1. Hgr., one of the types Nicer. 



of il. purhii. 



2- Hut. „ „ Lngos. 



o. Hgr. Cameroon. 



Mr. L. Fraser (C). 



J. Wood, Esq. (IV). 

 Dr. J. A. Smith (P.). 



4. ARIUS MADAGASCARIENSIS. 

 Vaill. Bull. Soc. Philom. (8) vi. 1894, p. 77. 



Depth of body 4J times in total length, length of head 3f times. 

 Snout rounded ; eye about 5 times in length of head and 2£ times in 

 interorbitnl width ; palate with two irregularly oval groups of villiform 



