BY J. DOTGLAS OGILBY. 737 



dorsal and anal fins divided to the base : ventral fins not in 

 contact basally, inserted a little behind the root of the jiectorals, 

 with i 5 rays, the fourth produced and filiform; pectoral fins 

 rounded, with 15 or 16 rays, the middle ones the longest; caudal 

 fin rounded, the peduncle strong. Genital papilla large, trian- 

 gulai- in the male, oblong in the female. Scales large and adherent, 

 those of the tail not much larger than those of the trunk; head 

 partially scaly, the snout naked; scales of the head and anterior 

 portion of the body cycloid, the remainder ciliated. Yertal:)r;e 

 28(1.3 + 15). 



E t 3' m o 1 o g y. — Dedicated to the late Mr. Gerard Krefi't, to 

 whom belongs the honour of ha^•ing first pointed out the differences 

 between certain of the Eleotrids of New South Wales. 



Type. — Eleotris austral is, Ivrefft. 



D i s t r i Ij u t i o n. — Coastal region of ISTew South "Wales. 



Krefftius austealis. 



KIpAitris audralis, Krefft, Proc. Zool. Soc. London, 1864, p. 183; 

 Castelnau, Proc. Linn. Soc. N.S. Wales, iii. 1878, p. 38-4 

 (1879); Macleay, Proc. Linn. Soc. N.S. Wales, v. 1880, p. 617 

 (1881); Ogilby, Catal. Fish. N.S. Wales, p. 36, 1886. 



Striped Gudgeon. 



D. vii, i 8. A. i 8. P. 15-16. Sc. 31-33/8-9. 



Body stout and moderately deep, the tail compressed. 

 Length of liead 3| to 3|, depth of body 3| to 4^ in the total 

 length; head as deep as or a little deeper than wide, its width IJ 

 to 1|, that of the slightly convex interorbitah region 4 to 4|, 

 diameter of eye 4i to 4| in the length of the head; snout much 

 broader than long, very obtusely rounded in front, not or Init 

 little depressed, from one-tenth to one-third of a diameter longer 

 than the eye. Maxillary extending to or not quite to the vertical 

 from the anterior margin of the eye, its length 3 to 3| in that of 

 the head. Eight or nine gill-rakers on the lower branch of the 

 anterior arch, the front ones reduced to spiny knobs. The space 



