BAEIL1US. 265 



100 At a regulator near Luxor. — Loat, 10-11.00. 



670 Between Luxor and Assuan. — Loat, 9.10.00. 



15 Assuan. — Loat, 7.1.00. 



160 Assuan.— Loat, 9-10.00. 



40 Nile at Wady Haifa.— Loat, 23.2.00. 



15 Omdurman. — Loat, 5.01. 



4 Wad Medine, Blue Nile.— Capt. Flower, 6.05. 



10 Rosaires, Blue Nile. — Capt. Flower, 6.05. 



4 Gondokoro.— Loat, 4.2.02, 22.2.02. 



7 Oino River, between Malo and Koscha. — O. Neumann, 20.2.01. 



2 Jebba, Upper Niger.— Dr. C. Christy, 1899. 



2 Ossomari, Lower Niger. — Dr. Ansorge, 1902. 



2. BARILIUS LOATI. 

 (Plate XLVIII. fig. 4.) 



Boulenger, Ann. & Mag. N. H. (7) vii. 1901, p. 80. 



Depth of body four to five times in total length, length of head three and three- 

 fourths to four and one-third times. Head twice to twice and one-third as long as 

 broad; snout pointed, projecting beyond the mouth, once and a half to twice as long 

 as the eye in the adult ; diameter of the eye five to six times in the length of the head 

 in the adult, about four times in the young ; mouth extending to below centre or 

 posterior third of eye ; no barbels ; second suborbital deep, extending posteriorly to the 

 vertical of the posterior border of the eye; the naked space between the prseoperculum 

 and the suborbitals measures about one-third the width of the latter. Gill-rakers 

 few and very short, rudimentary. Dorsal fin with III 7-9 rays, originating at equal 

 distance from the occiput and the root of the caudal, or a little nearer the latter, the 

 second half of its base above the anal ; its anterior rays longest, three-fifths to 

 two-thirds the length of the head. Anal fin with III 12-15 rays, notched, often 

 produced into a convex anterior lobe, the anterior rays much longer than the others, 

 about as long as the longest dorsals. Pectoral fin pointed, three-fourths to four-fifths 

 the length of the head, not reaching the ventral, which is much shorter and does not 

 reach beyond the vent. Caudal fin deeply forked, crescentic when fully spread out. 

 Caudal peduncle once and two-thirds to twice as long as deep. Scales with radiating 



9—10— 



striae, 51-58 -jr^r, 2 to 3 between the lateral line and the root of the ventral fin, 

 16 round the caudal peduncle. 



Males differ from females in the more pronounced anterior lobe of the anal fin, the 

 rays of which are thickened during the breeding-season and studded with pearl-like 

 granular excrescences ; the snout also bears nuptial excrescences, in the form of 

 numerous small, closely-set, subcorneal tubercles. 



2m 



