254 PEECID^. 



b-d. Half-grown. Norfolk Island. From the Haslar Collection. 



e. Adult male : skeleton. Australia. From the Haslar Collection. 



f-h. Adult : bad state. Australia. From the Haslar Collection. 



r. Half-grown. Australia. Presented by J. B. Jukes, Esq. 



Jc. Adult: stuffed. Australia. 



I. Adult : not good state. Australia. Presentedby Sir J. Richardson. 



m. Half-grown. Australia. Presented by the Earl of Derby. 



n-q. Adult : not good state. Poit Arthur. From the Haslar Col- 

 lection. 



r. Adult: not good state. Port Arthur. From the Haslar Col- 

 lection. 



s-iv. Adult : very bad state. Port Arthur. Presented by Sir John 

 Eichardson. 



The swim-bladder is simple, provided with thin membranes ; tes- 

 ticuh two and separate ; pseudobranchise large. 



STceleton. — The upper surface of the skull is broad, flat, rather 

 depressed in the middle ; the occipital crest is feeble, and does not 

 extend on to the upper surface of the skull ; one low, thin and muci- 

 ferous ridge passes from the orbit to the upper end of the praeoper- 

 culum. Praeorbital very small, triangular, with spinous teeth at the 

 lower margin. Suborbital arch narrow, with a concave plate at the 

 inner side for supporting the eyeball; upper maxillary with a rather 

 slender basal style, and widening behind ; there is an additional bone 

 situated along its upper margin. There is no free space between the 

 articiilary and dentary bone. The operculum terminates behind in 

 two very feeble, flat, thin points, separated from each other by a 

 notch ; the upper is shorter and rounded. The praeoperculum is 

 striated, each stria terminating in a fine tooth ; the serrature extends 

 over both the limbs, and is coarser beneath ; the sub- and interoper- 

 cillum have the margins entire and rounded ; suprascapiila scarcely 

 and very indistinctly denticulated, humeral entire ; the lower coracoid 

 styliform. There is no free space between both halves of the pubic 

 bone. 



The length of the abdominal vertebral column is to that of the 

 caudal as 12: 19; the ribs are rather long and slender; the first 

 interhaemal is compressed, feeble and flexible, and attached to the 

 hsemals of the twelfth, thirteenth, and fourteenth vertebrae. 



The teeth, being rather strong and separate, form a card-like 

 band in the upper jaw. The others are villiform, and reach, in both 

 the jaws, to the extremities of the bones. The group of the vomerine 

 teeth forms nearly an isosceles triangle ; palatine band rather broad ; 

 those of the pharyngo-branchial villiform. 



3. Arripis truttaceus. 



? Perca trutta, Cuv. 8f Val. ii. p. 54. 

 Centropristes (?) truttaceus, Ctcv. 8f Val. iii. p. 50. 



D. ^. A. i. 



18 9 



The height of the body is one-fourth of the total length, and equal 



