528 Mr. G. A. Boulenger on some 



1. Phractura Bovei. 

 Peltwa Bovei, Perugia, /. c. fig. 



Depth of body 9 times in total length, length of head 6 

 times. Head 3 3 as long as broad; skull a little rugose, 

 covered with thin skin ; snout a little longer than the post- 

 ocular region of the head, pointed, projecting beyond the 

 mouth; the space between the nostrils equally distant from 

 the end of the snout and the eye, which is directed upwards ; 

 the diameter of the eye 10 times in the length of the head 

 and 2^ in the interocular width ; maxillary barbels | length 

 of head, nearly reaching the gill-cleft, mandibular barbels 

 much shorter. Occipital process 3 times as long as broad, 

 not reaching interneural shield. Dorsal I 7 ; first ray longest, 

 £ longer than the head; second dorsal very small. Anal I 7. 

 Pectoral a little longer than the head, as long as the ventral ; 

 latter nearly reaching the anal. Caudal with crescentic notch. 

 Caudal peduncle depressed, 3 total length. 23 dorsal and 19 

 ventral scutes, the last 5 on the caudal peduncle. Uniform 

 yellowish in spirit. 



Total length 110 millim. 



Lower Congo. Type in Genoa Civic Museum. 



2. Phractura scaphirhynchura. 



Doumea scaphirhynchura, Vaillaut, Rev. Scientif. xxiii. ii. 1886, p. 18. 

 Peltwa scaphirhynchura, Pellegriu, Bull. Mus. Paris, 1900, p. 6. 



D.ffers in the following points from the preceding species : — 

 Length of head 5 times in total length, 1^ its width; snout 

 twice as long as postocular part of head; diameter of eye 

 7 times in length of head, 1^ in interocular width; maxillary 

 baibel \ length of head, \ the distance separating its root 

 from the gill-cleft. Occipital process 2^ as long as broad, 

 reaching interneural shield. Dorsal I 6, first ray as long as 

 head. Pectoral not longer than head. 22 dorsal and 18 

 ventral scutes. 



Total length 120 millim. 



DieMe', on Alima B,., French Congo. Type in Paris 

 Museum. 



7. Andersonia, gen. nov. 



Body elongate, depressed, with extremely slender caudal 

 peduncle ; a series of imbricate scales along each side of the 

 back and belly from the dorsal and ventral fins to the caudal 

 peduncle, which is entirely surrounded by bony scutes. Two 

 short dorsal fins, the anterior above the ventrals and formed 



