SYNODONTIS. 455 



lateral, 3 to 3-^ times in length of head, equal to interorbital width ; 

 lips moderately developed ; praemaxillary teeth forming a short, broad 

 band; movable mandibular teetli hardly -J diameter of eye. 18 to 25 in 

 number. Maxillary barbel not margined, 3-| to 4| times length of head, 

 reaching caudal peduncle or caudal fin ; mandibular barbels with long, 

 slender branches, outer at least twice as long as inner and If to 2 times 

 length of head. Gill-opening not extending downwards beyond root of 

 pectoral spine. Occipito-nuchal shield rugose like the occiput, obtusely 

 keeled, with obtuse or rounded posterior processes. Humeral process 

 rugose, striated above, short and broad, its point obtuse or truncate, 

 hardly -extending so far back as occipito-nuchal process. Dorsal I 7 ; 

 spine scarcely curved, as long as or a little longer than head, smooth in 

 front, feebly serrated behind. Adipose dorsal 3 to 4 times as long as 

 deep, narrowly separated from rayed dorsal. Anal III-IV 8-9. Pectoral 

 spine as long as or a little shorter than head, strongly serrated on both 

 sides. Ventral not quite reaching anal. Caudal deeply notched, upper 

 lobe more or less prolonged into a filament. Caudal peduncle deeper 

 than long. Olive or brownish above, uniform or spotted with dark 

 brown ; caudal fin, often also dorsal and anal, with very numerous small 

 dark spots, forming transverse series. 

 Total length 160 millim. 



M. A. Greshoff (0.) ; 



Utrecht University (E.). 

 Capt. Wilvorth (C). 

 M. P. Delhez (0.). 

 M. Luja (0.) ; 



Luxemburg Museum (P). 

 Rev. J. H. Weeks (0.)- 

 Capt. Royaux (C). 



44. SYNODONTIS BATES LI. 

 Bouleng. Ann. & Mag. N. H. (7) xx. 1907, p. 50. 



Depth of body 3£ to 4f times in the total length, length of head 3 to 

 3^ times. Head a little longer than broad, rugose above; snout obtusely 

 pointed, as long as postocular part of head ; eye supero-lateral, 4 to 5£ 

 times in length of head, If to 2£ times in interorbital width ; prae- 

 maxillary teeth forming a short, broad band ; movable mandibular teeth 

 not half diameter of eye, 30 to 40 in number; maxillary barbel not 



