24 MEMOIRS OF THE QUEENSLAND MUSEUM. 



fc\ Caudal fiu rounded. 



c*. Trunk anteriorly naked . . . . . . . . . . . . ii. Merogymrms. 



c'. Trunk everywhere scaly. 



cP. Dorsal spines all simple . . . . . . . . iii. Gnathypops. 



dr. Anterior dorsal spines transversely forked . . . . . . iv. Stalix." 



6'. Caudal lanceolate . . . . . , . . . . . . . . . . v. LoJichopisthus." 



a*. Maxillary not extending beyond the eye . . . . . . . . . . vi. Owstonia.^* 



i. MEROGYMNUS Ogilby. 



Merogymnus Ogilby, Proc. Eoy. Soc. Queensl., xxi, 1908, p. 18 (eximius) ; McCuUoch, Eec. 

 West Austr. Mus., i, 1914, p. 216. 



Body elliptical or elongate-elliptical, the greater part of the trunk naked. 

 Maxillary much shorter than the head, its distal extremity much dilated. Jaws 

 with bands of villiform teeth, the outer row scarcely larger than the others. 

 Caudal fin rounded. Gill-rakers in rather large number, long, and slender. 



Eastern and South-Eastern Coasts of Australia. Two species. 



o\ Scales very small, covering about half of the sides and belly . . . . 1. eximius. 



a'. Scales larger, but narrowly entering the trunk ; belly naked . . . . 2. jacTcsoniensis. 



1. MEROGYMNUS EXIMIUS (Ogilby). 



(Plate II.) 

 Merogymnus eximius Ogilby, Proc. Roy. Soc. Queensl., xxi, 1908, p. 18. 



HAELEQUIN SMILEE. 



Type locality: — Snapper Banks off Moreton Bay, S.Q. 



Body elliptical ; its width at the shoulder 1-7 to 1-83 in its depth, which is 

 3-62 to 3-75 in its length and 1-25 to 1-33 in the length of the head. Caudal 

 peduncle four fifths deeper than long, its least depth 2-55 to 2-7 in the length of 

 the head. Head a little deeper than wide, the fronto-occipital profile evenly 

 rounded, its width 14 to 1-5 in its length, which is 2-83 to 2-9 in that of the body. 

 Snout short, with linear or gently rounded, vertical profile, its length 1-75 to I'S 

 in the eye-diameter, which is 2-83 to 3-2 in the length of the head. Interorbital 

 region narrow and feebly concave, its width 3-43 to 3-75 in the eye-diameter. 

 Maxillary extending to about one diameter of the eye behind the eye, its length 

 14 to 1-5 in that of the head, the width of its distal extremity about two ninths 

 of its length. 



Scales extending forwards on the trunk to below the middle of the 



"Jordan & Snyder, Proc. U. S. Nat. Mus., xxiv, 1902, p. 495. Type S. Mstrio from 

 the Japanese coast. 



" Gill, Proc. Acad. Nat. Sci. Phila., 1862, p. 241. Type L. micrognathus from Cuban 

 waters. 



" Tanaka, Journ. Coll. Sci. Tokyo, xxiii, 1908, p. 47. Type O. totomiensis from the 

 seas of Japan. 



