BY J. DOUGLAS OGILBY. 749 



V. 1880, p. 619 (1881); Lucas, Proc. Roy. Soc. Vict. (2) ii. 

 1890, p. 29. 

 '1 Philypnodon niidiceps, Bleeker. 



Yarra Gudgeon. 



D. vii, i 9-10. A. i 9. P. 19. Sc. 4347/12-13. 



Bod}^ moderately elongate, tapering from the shoulder, the 

 tail strongly compressed. Length of head 3 to 3;^, depth of body 

 5 1 to 5 1 in the total length; depth of head 2 to 2|, width of head 

 14 to 2, of interox-bital region 5^ to 6 J, diameter of eye 4| to 4^'„ 

 in the length of the head; snout broad, rounded in front, and 

 moderately depressed, one-third to one-half of a diameter longer 

 than the eye. Maxillary extending to the vertical from the 

 anterior third to the posterior fourth of the eye, its length 1^^ to 

 2 k in that of the head. All the teeth are subequal in size. Seven 

 to nine gill-rakers on the lower branch of the anterior arch. The 

 space between the origin of the first dorsal and the extremity of 

 the snout is greater than its distance from the base of the last soft 

 ray ; outer margin of the spinous dorsal gently rounded, the 

 second, third, or fourth ray the longest, 2| to 2f in the length of 

 the head, and reaching when laid back nearly to, to, or a little 

 beyond the origin of the second dorsal; the seventh or eighth soft 

 rays are the longest, 1^^ to 2^ in the length of the head : the 

 anal fin commences behind the origin of the second dorsal and is 

 in all respects similar to it : fourth ventral ray but little pro- 

 duced beyond the third and fifth, not nearly extending to the 

 vent in either sex, its length 2^^ to 2f in that of the head : 

 middle pectoral rays the longest, reaching nearly to, to, or a little 

 beyond the vertical from the origin of the second dorsal, and are 

 1_^'_. to 14 in the length of the head : caudal rounded, 1| to 14 in 

 the length of the head; the peduncle rather slender, its length li 

 to 1^ in that of the head, its depth 2/^ to 24 in its length. 

 Genital papilla triangular in the ^, oblong and crenulate in the 

 Q. Scales small and very irregular anteriorly, some of those on 

 the tail with an angular border; occipital scales deeply embedded 

 and non-imbricate, extending forwards beyond the preopercle. 



