A CONTRIBUTION TO THE ICHTHYLOGY 187 



h^. Scales larger, less than 60 between the origin of the lateral 



line and the hypural joint, 

 j^ Dorsal and anal spines very strong, longest dorsal spine 



longer than the rays, and second anal spine much longer 



than the third. 

 ki. 



k^. Nostrils well separated; angle of the maxillary not covered 

 by the lip. 



1^ Dorsal with ten rays; praeorbital serrated — — — — ■ — 



— — — — — — argenteus. 



1^. Dorsal with twelve or thirteen rays; praeorbital not ser- 

 rated — — — — — alligatoris. 



Am b as s l' s dal y ens i s n. sp. 



Locahty: Daly River, July 1894. Three specimens, 49 (type), 



38 and 35 mm. 



D. VII, I. 9; A. III. 8; 1. lat. circa ^8. 



Height of body 2,45 in total length (s. c), length of head 

 2,8 in the same. Eye 0,3 in head, 1,4 in postorbital part of head, 

 1,5 length of interorbital space. Latter and length of snout 

 subequal. In the first dorsal fin, the second spine is the longest, 

 being somewhat more than ^/lo of the total length. In the anal 

 fin, the third spine is the longest, slightly exceeding the second 

 one. It is a little more than ^/4 ot the third dorsal spine. 



The praeorbital bone is armed with 5 — 6 serrae on its 

 outer edge. The two limbs of the praeopercle serrated, the upper 

 one with one stronger spine at the angle and 7 — 8 smaller 

 ones at the lower edge, the lower limb serrated at the corner 

 and at the lower edge (12 to 15 spines), these spines are not 

 stronger than those at the inferior border of the upper limb. 

 Lower angle of the gill-cover with six small spines. 



Below the eye, there are two longitudinal rows of scales. 



The lateral line is interrupted. Its anterior part extends over 

 the 13 anterior scales of the fifth longitudinal row. These scales 



