1. MUGIL. 



421 



margins of the manclibiilary bones is acute. The pectoral does not 

 extend on to the spinous dorsal. 

 Australia. Aneiteum. 



«-6. Adult : skins. Perth Water, Western Australia. 

 c-e. Adult: stuffed. Australia. 



/. Nine inches long. Australia. From Mr. Macgillivray's Collection. 

 g. Six inches long. Australia. From Mr. Macgillivray's Collection. 

 h, i. Fine specimens. From the Haslar Collection. 

 k\ Half-grown : stuffed. Fresh waters of Aneiteum. From Mr. 

 Macgillivray's Collection. 



Description. — The height of the body equals the length of the 

 head, and is one-fifth of the total. The young specimen has the 

 body somewhat more slender. The 

 least depth of the tail is two -fifths of 

 the length of the head. The lower pro- 

 file of the head is rather more convex 

 than the upper; the greatest depth of 

 the head, above the posterior margin of 

 the operculum, is three-quarters of its 

 length; the interorbital space is slightly 

 convex, and contained twice and a third 

 in the length of the head. The snout 

 is broad, moderately depressed, and 

 longer than the eye ; lips thin ; the 

 maxillary is a little longer than the 

 intermaxillary, and becomes just visible 

 behind the angle of the mouth ; the 

 prseorbital is not emarginate, and mi- 

 nutely denticulated at its anterior edge 

 and at its extremity, which is obliquely 

 truncated. The cleft of the mouth is one-foui-th broader than it is 

 deep ; the margins of the mandibulary bones form an acute angle 

 anteriorly ; the space at the chin, between the mandibles and inter- 

 opercles, is elongate-lanceolate. Both lips are provided with a series 

 of minute cilia. There is a deep cavity in front of the vomer. The 

 nostrils are distant from each other, and the posterior is somewhat 

 nearer to the orbit than to the anterior. The eye is siirrounded by 

 a broad adipose membrane nearly entirely covering the ii'is. There 

 are three series of somewhat deciduous scales between the eye and 

 the pra^opercular margin ; the angle of the prseoperculum is rather 

 produced posteriorly ; there are three i)ores on its inferior margin 

 and two on its posterior. 



The pectoral fin is inserted somewhat above the middle of the body, 

 and extends to the tenth scale of the lateral line ; it is shorter than 

 the head (the snout not included) ; the root of the ventral is mid- 

 way between base of the pectoral and dorsal. There are twenty-two 

 or twenty-four scales between the snout and the spinous dorsal. The 

 origin of the latter corresponds to the twclflh scale of the lateral 

 line, and is exactly in the middle between snout and base of the 



M. dobiila. 



