1889.] FISHES FROM MUSCAT. 245 
DIAGRAMMA JAYAKARI. 
Having received a second specimen, a skin 22 inches long, from 
Muscat, Bee in colour with the specimen so named by me, but 
with D. 32, I provisionally accept Mr. Day’s opinion that D. jaya- 
kari is a colour-variety of D. griseum. According to Mr. Jayakar’s 
notes the body, when fresh, is of a pale white eae with yellow 
spots. Length of the longest spine “‘ seven eighths”’ the depth of 
the body, in my diagnosis, is a lapsus for ‘‘ two sevenths.”’ 
ApuHareus ruTILANS, C. & V. 
My notes on this fish were, by an oversight, taken from a specimen 
of Pagellus affinis, although the true A. ruéilans was actually 
included in Mr. Jayakar’s first collection. 
PAGRUS RUBER. 
On examination of a large series of specimens, 1 now consider this 
supposed new species to be identical with P. spinifer, as suggested 
by Mr. Day. 
CARANX JAYAKARI. (Plate XXVI.) 
Mr. Day makes this a synonym of C. nigrescens. I have never 
seen an example of the latter, but if the figure in the ‘ Fishes of 
India’ is to be relied upon, the two appear to be distinct. It is to 
be remarked that Mr. Day describes his C. nigrescens as having the 
**fins nearly black, especially the dorsal,’ whilst the specimens of 
C. jayakari before me, now three in number, have the fins devoid 
of black pigment. In C. jayakari the anterior rays of the anal 
measure nearly three fourths the length of the base of the same fin. 
The type specimen is figured on the Plate. 
UMBRINA STRIATA. 
On comparison of the type with the figure of U. sinuata, Day, a 
species founded upon quite young specimens, I find the following 
differences, which do not seem to be ascribable to age :—The origin 
of the spinous dorsal falls in advance of the base of the pectoral in 
U. sinuata, above the axil in U. striata; in the latter species there are 
not nine sinuous dark bands on the body, while in U. sinuata there 
are as many as there are series of scales ;_besides the direction of these 
bands is not the same in the two fishes—since, for instance, the band 
originating above the base of the pectoral extends to the 8th and 
9th rays of the soft dorsal in U. sinuata, to the 16th and 17th in 
U. striata. 
TRIGLA ARABICA. (Plate XXVII.) 
This species has been considered identical with 7’. polysticta by 
Mr. Day, who states, I know not on what authority, that the ‘ bony 
plate along the base of the dorsal fin” is wider in small than in 
large examples. This view is clearly erroneous, from the fact that 
the dermo-ossifications in question are absolutely more developed in 
T. arabica than in the larger 7’. polysticta, as may be seen by the figure 
(Plate XXVII.). The orbit of 7’. arabica i is proportionally smaller than 
Proc. Zoou. Soc.—1889, No. 17 
