1870.] LIeEUT.-COL, PLAYFAIR ON A NEW FISH FROM ADEN. 85 
acute ; whorls 63, regularly increasing, crossed by rather prominent, 
straight, widely separated ribs, the last contracted and ascendent ; 
aperture ovately circular, thick, callous, and shining ; margins formed 
by a thick callus continuous with the aperture, 
Breadth 0-04, height 0-08 of an inch. 
Hab. Wanga, San Christoval, Solomon Islands; found on the 
mountains, in damp places (Brazier). 
17. CycLosToMA BRAZIERI. 
Shell pyramidal ; spire acute and elevated, apex rose-red ; whoris 
5, round, under the lens very faintly spirally striated, dark cinnamon- 
colour ; suture deep ; umbilicus deep and narrow; aperture circular ; 
peristome plain, scarcely thickened. Operculum solid, very concave 
outwardly, with prominent circular ridges. 
Breadth 0°13, height 0°16. 
Hab. Upolu, Navigator’s Islands ; found on the mountains, under 
decaying logs (Brazier). 
10. Note on a Freshwater Fish from the Neighbourhood of 
Aden. By Lieut.-Col. Prayrair, F.Z.S., H.M. Consul- 
General in Algeria. 
I am indebted to the kindness of my successor at Aden, Captain 
Goodfellow, for several specimens of a Cyprinoid fish recently disco- 
vered in South Arabia. 
During all the years I resided there I never heard of its existence, 
and I was fully convinced that the streams of that region, which are 
almost if not entirely dry in summer, and which even in the cold 
season are lost in the sand before reaching the sea, were destitute of 
fishes. 
Not long ago the Sultan of Lahej, whose territories touch Aden, 
and of which, indeed, the latter once formed a part, sent to the 
Political Resident a jar of fishes, which he had caught in one of his 
streams, and which he suggested should be put into the ancient 
reservoirs, recently restored, and then full of rain-water. 
This was done, and in a very short time the fishes increased both 
in number and size; and it is of these that Capt. Goodfellow for- 
warded the specimens before mentioned. 
I was at first inclined to regard it as a new species of Discogna- 
thus, chiefly from the fact that it has four and a half series of scales 
between the lateral line and the root of the ventral fin, whereas the 
only other known species nearly resembling it had but two or two 
and a half. 
My friend Dr. Ginther, however, who has compared it with 
numerous specimens of D. lamta in the National collection from 
various localities between Nepaul and Palestine, has no doubt that it 
is referable to that remarkable species. 
