1889. ] FROM KILIMA-NJARO. 71 
and one third of the total length, without caudal. Snout much 
longer than the eye, the przorbital being longer than, and as high 
as, the orbit. The teeth in the upper jaw form a broad villiform 
band, those of the outer series being a little stronger then the others. 
These stronger teeth, which are thirty-eight in number on each side, 
have the crown slightly compressed, some showing a distinct notch 
and being brown at the tip. Interorbital space twice as broad as 
the orbit, convex. Scales on the cheek rather small, in three series ; 
scales cycloid, of moderate size; the lateral line is interrupted below 
the end of the spinous dorsal. 
Dorsal spines gradually increasing in length ; the sixth ray is the 
longest, reaching backwards to the root of the caudal 3 pectoral and 
ventral fins long, extending to, or nearly to, the anal. 
Coloration uniform dusky, but some of the scales on the back seem 
to have had a reddish-brown spot at the base. 
2. The other species were obtained by F. J. Jackson, Esq., F.Z.S., 
in the river Ruva, in the Arusha country. 
SYNODONTIS PUNCTULATUS, sp. nov. (Plate VIII. fic. A.) 
Ph Ae Ay lset, B.4 1/8, NaS: 
Allied to Syndontis serratus and Syndontis guttatus. 
The gill-opening extends downwards to before the root of the 
pectoral fin. Mandibular teeth shorter than the eye, about 24 in 
number, no villiform teeth behind them. Maxillary barbels a little 
longer than the head, not fringed; mandibular barbels provided 
with filaments, the outer ones shorter than the head. The length 
of the head (from the snout to the gill-opening) is one fourth of the 
total length (without caudal). Nuchal carapace not much arched, 
longer than broad ; its posterior processes do not extend behind 
the dorsal spine. Dorsal and pectoral spines subequal in length, 
and somewhat shorter than the head; both these spines are 
slightly serrated in front. Humeral process twice as long as high, 
pointed behind. The distance between the dorsal and adipose fins 
is more than the length of the former, but shorter than the head. 
Head, body, and adipose fin covered with very numerous and very 
small brown dots. ‘lhe dots become somewhat larger above the 
anal fin, on the free portion of the tail, and on the caudal fin, but 
none exceed the pupil in size. 
‘Two specimens, of which the larger measures 8 inches. 
TYLOGNATHUS MONTANUS, sp. nov. (Plate VIII. fig. B.) 
D.12. A.8. L. lat. 37.  L. transv. 5/6. 
Snout very obtuse, rounded, with small tubercles, and with fleshy 
continuous lips, covering an inner, sharp, horny, labial edge on the 
upper as well as lower jaw. The mouth is crescent-shaped and at 
the lower side of the snout. A slender barbel is hidden in a deep 
recess at the corner of the mouth, and the upper lip is overhung by 
