1887.] FISHES FROM MUSCAT. 66 J! 



the total (without caudal) ; a groove in front of the eye, below the 

 nostril ; diameter of the eye five and a half times in the length of 

 the head. Greatest depth of the body one third of the total length. 

 Tail compressed. Scales largest on the posterior half of the body 

 and on the tail, granulated in the middle and with a short keel or 

 tubercle ; 24 or 25 scales between the origin of the second dorsal 

 and the vent ; no enlarged scales behind the gill-opening ; no spines 

 on the tail. First dorsal spine about half the length of the head ; 

 second dorsal and anal much elevated anteriorly, falciform, their 

 depth equalHng the distance between the mouth and the gill-opening. 

 Ventral spine short. Caudal strongly notched. Brown, whitish 

 inferiorly ; the tubercle on the scales white. 



Total length 1 foot 1 1 inches. 



Two specimens, dry. 



162. Balistes NIGER, Mungo Park. 



163. Balistes mitis, Benn. 



164. Balistes assasi, Forsk. 



165. MoN acanthus setifer, Benn. 



166. Ostracion gibbosus, L. 



167. Ostracion cubicus, L. 



168. Ostracion cyanurus, Riipp. 



169. Ostracion cornutus, L. 



Gymnodontes. 



170. Tetrodon stellatus, B1. Schn. 



171. Tetrodon hispidus, L. 



Chondropterygii. 



Trygonid^. 



172. Trygon uarnak, Forsk. 



EXPLANATION OF PLATE LIV. 



Fig. 1. Opisthognathus muscatensis, p. 662. Two thirds nat, size. 

 2. Gobius jayacari, p. 663. 



