732 ON SOME AUSTHALIAX ELEOTKIX.E, 



ii. Al)(lomi»al vertebriy less numerous than the caudal; sexes 

 similar in colour, dissimilar in the shape of the genital 

 papilla. 

 A. Head as wide as deep; mouth small ; outer series of teeth 

 slightly enlarged; gill-openings narrow; five branchios- 

 tegals; genital papilla large; head partially scaly. 

 n. First dorsal with 7 rays ; fourth ventral ray produced 

 and filiform; pectoral with not more than 16 rays: 

 scales large; cheeks and interorbital space scaly 



Krkfftius, p. 736 

 a. First dorsal with 6 I'ays; fourth ventral ray not pro- 

 duced; pectoral with not less than 18 rays; scales 

 moderate; cheeks mostly, interorbital region entireh^ 

 naked ... 



MULGOA, p. 740 

 A'. Head wider than deep; mouth large; gill-openings wide ; 

 six branchiostegals; genital papilla small; head almost 

 entirely naked 



Opiiiorrhinus, p. 745 



Carassiops, gen.nov. 



Eleotris, sp. auctt. 



Body oblong and compressed, the back rounded; head rather 

 small, compressed, much deeper than wide, rounded above; mouth 

 small and oblique, the lips thin ; premaxillaries pi'o tractile ; 

 maxillaries narrow, with the distal end exposed and curved down- 

 wards; lower jaw but little the longer; jaws with a band of 

 villiform teeth, the outer mandiljular series slightly enlarged in 

 front; lower pharyngeals forming together a subtriangular {mtch, 

 the outer and symphyseal series strong and hooked; nostrils widely 

 separated, the anterior tubular; eyes lateral; none of the bones of 

 the head armed ; gill-openings narrow, extending forwards to 

 below the angle of the preopercle, the isthmus narrower than the 

 interorbital regions; six branchiostegals; pseudobranchiaj present, 

 small; gill-rakers short, stout, and simple. Dorsal fins separate, 

 with y'l, i 9-10 rays, the spinous ones flexiljle; anal tin originating 



