AISI l.'Al.l.W (iiilillli.K Mcrn.l.nril ANH (m,||,|;v. 283 



Proportions of ii speciiiit'ii ll2iiiiii. loiif?, Iroiii 15iiii(l;il)('i'p, (^ueoiis- 

 laiid, Hgured by Waite (Ijor. cif.). Deptli at veiitiuls 'AU in the lengfli 

 between the preniaxillary Hyniphvsis and tlie liyparal joint ; liead 'Al in 

 the same. Eye 56 in the head, shorter than the snout, which is 4"(j in 

 the head ; iuterocular space twice as wide as tlie eye, 2"8 in the head. 

 Breadth between the bases of the pectorals I'o in tlie deptli ; depth of 

 caudal peduncle 2'1 in the head. Sixth dorsal spine 81, last dorsal ray 

 l"-i, last anal ray 1'6 in the head. Pectoral 14-, caudal 11 in the head. 



This specimen agrees with the foregoing description of M. nioijariuhi 

 in all details, except in having the dorsal spines somewhat shorter, and 

 the rays of the pectoral and ventral tins longer, which are merely 

 individual peculiarities. 



The subspecies M. m. inhpcn^iiH differs From the typical i'oriii oiilv in 

 having larger and less numerous scales, there being 80-1)5 in a longitudinal 

 series instead of 8b!-42, and 18-14 in a transverse roAV instead of 15-16 ; 

 the two are similar in all other details. But we have examined several 

 specimens from Powell's Creek and the Palmer River, Central Australia, 

 and inland from Cairns, Queensland, in which the scales number 35-86 

 in a longitudinal series, and 14-16 transversely. These localities are 

 somewhat intei*mediate between the ranges of the two subspecies, so we 

 are led to the conclusion that tlie larger and smaller scaled forms are 

 merely geographical races of the one species. 



Synonymy. — Five cotypes of Elevtris riiimnK, De Vis, preserved in the 

 Australian Museum, prove this species to be synonymous with M. m. 

 adxperiiiis, as has already been determined by Ogilbv. The holotype of 

 EJeotris coiiroldi-, De Vis, is in the collection of tlie Queensland Museum ; 

 it is stuffed and its tins are much damaged, while it retains no traces of 

 its colour-marking ; its i-emaining characters, however, leave no doubt as 

 to its identity with M. di. (uh2>ersns. 



Locs. — We have examined a i-epi-esentative series of 86 specimens 

 from the following localities. South Austi'alia : — Torrens River ; Onka- 

 pariuga ; Murray Bridge. New^ South Wales : — near Mudgee and Dubbo ; 

 Clarence River. Queensland : — Brisbane River (cotypes of E. viinivf', De 

 Vis.) ; Eidsvold, Burnett River ; Bundaberg ; 25 miles inland from 

 Cairns. 



Dixtrihntioii. — South Australia. Murray River System. Rivers of 

 north eastern New South Wales and eastern Queensland, northward to 

 Cairns. ^ 



MoGURNDA (Kkefftujs) adstkalis, Kreft. 



Eleotris aiistrali>s, Krefft, Proc. Zool. Soc, 1864, p. 188. /(?., Giinther, 

 Ann. Mag. Nat. Hist. (8), xx., 1867, p. 61. Id., Castelnau, Proc. 

 Linn. Soc. N.S.Wales, iii., 1879, p. 884. /(/., Macleav, Proc. Linn. 

 Soc. N.S.Wales, v., 1881, p. 617. 



Kreft ins amfntJix, Ogilby, Proc. Linn. Soc. N.S.Wales, xxi., 1897, p. 787. 

 Id., Waite, Rec. Austr. Mus., v., 1904, p. 288, pi. xxxv., tig. 2. 



Hab. — Eastern rivers of New South Wales. 



