longer than the upper one ; mouth extensible ; preeoculer 

 strongly serrated ; posterior limb of the prseoperculum 

 finely serrated, and having a light notch towards the inferior 

 angle, from which the spines become very strong, the lower ones 

 in particular, which are directed with their points forwards- 

 The operculum has two points, the lower much larger than the 

 other. The dorsals are continuous, the first having its first spine 

 rather short, the second about twice its length, the third about 

 equal to twice the length of the second, the fourth the longest of 

 all ; the caudal is lightly emargiuated. The spines of the anal 

 are rather slender ; the first is the shortest, and the third the 

 longest ; the lateral line extends to the base of the caudal. 



The colour is of a dark green, becoming very light and greyish 

 on the sides of the body, the lower parts of which are white. On 

 the back, each scale has its centre of a bright silver colour, which 

 shines like a diamond. Anterior parts of the head and mouth 

 of a light purple ; operculum with green and red tinges ; 

 fins of a yellowish grey ; the spines purple ; pectorals green, 

 with the base more or less scarlet ; eye of a bright orange yellow 



This fish is very common in the lakes of Gripps Land, and is 

 often brought in great numbers by the steamers to the Melbourne 

 market in winter. Its flesh is soft, and not savory. Medium 

 length, 12 inches. 



LATES SIMILIS. 



This fish is very nearly allied to the precedent ; in fact, it is 

 only by a very close examination that it can be distinguished 

 from it. Its form and colours are similar, but the snout is shorter, 

 and seusibly less than the diameter of the eye. The denticula- 

 tions of the prgeoperculum are larger, and those of the lower limb 

 are directed backwards. The second dorsal fin has only nine 



rays. 



It is found with L. colonorum, but seems to be very scarce. 



LATES ANTABCTICTTS. 



(Sea Perch.) 

 B. 7. u. 8—1/10. A. 3/8. C. 16. P. 14. 1. 1. about 55. 

 L. lat. 8/16. 



Height, three and one-tenth in total length ; head three 

 and two-thirds in same ; eye five and one-twelfth in length of 



