2(»r» KKCOKPS (tK rilK AIMItAI.IAN MI'SKTM. 



pore before the eye. Eye minute, hidden in tlie skin on the upper surface 

 of the head. Mouth snbvertical, with broad lobate lips ; lower jaw pro- 

 jecting. Mandible with three paired barbies increasing in size backward, 

 and one almost between the median pair. An outer row of exposed 

 subulate teeth in each jaw, which are largest towards the symphyses ; 

 these ai-e ft)llowe(l by a band of villiform teeth which is widest anteriorly 

 and narr(}ws latenilly ; palate toothless. Gill-openings separated by a 

 space equal to that between the posterior iu)strils. 



Body wholly naked, lacking even rudimentary scales. A lateral line 

 is indicated by a gnjove npou which are large Heshy swellings on the tail 

 portion. A small genital papilla. 



Dorsal tin commencing above the end of the ventrals, the distance 

 separating it fi-oin the gill-opening a little less than that between the 

 latter point and the snout; the five anterior spines increase regularly in 

 length, the sixth is shorter than the fifth and widely separated from the 

 others ; they are completely united with each other and with the rays by 

 a thick membrane. Dorsal i-ays branched, increasing in length to about 

 the middle of the fin, then decreasing backward ; the last is united with 

 the base of the caudal by membi-ane, but its tip forms a free lobe. Anal 

 similar to the soft dorsal. Pectoral small, rounded, with branched rays. 

 Ventrals large, completely united, with a broad basal membiane. Caudal 

 pointed. 



Colourless after long preservation in alcohol. 



Described and figured fi-om a specimen '218 mm. long, from Ripple 

 Creek, Herbert River, (Queensland, Avhich is very close to the Murray 

 River whence the typical example was obtained. It differs from De Vis' 

 description in being wholly naked and in having branched rays in all the 

 fins ; the head is less than one-ninth of the total length instead of one- 

 eighteenth, and there are no palatine teeth. Notwithstanding these 

 discrepancies, it seems probable that the specimen is correctly identified 

 as L. monla.r. 



Varintion. — A second specimen from Cooktown, 190 mm. long, is very 

 similar, bnt lacks the median mandibular barbie. The head is one-tenth 

 of the total length and it has vi/l? lays in the dorsal fin and 4() in the 

 anal. 



Lues. — Ripple Creek, Herbert River, and Cooktown, Queensland. 



Le.mk rn;i'ii;AscKNs, T)e Vis. 



(Plate XX. xi., fig. :',.) 



Lnnr piirpnrasciHS, De Vis, Pi'oc. Linn. Soc. N.S.Wales, ix., liSt^t, |). G'.>8. 

 (iohinidcx piirininiscenis, Ogilbv, Cat. Fish. N.S.Wales, 1886, p. 86. /(/., 



Waite, Mem. N.S.Wales Nat. Club, ii., V.)0\, p. 46. 

 Aniblijnjnts niijer, De Vis, Proc. Linn. Soc. N.S.Wales, ix., 1884, p. 698. 



D. vi/37; A. 36; P. 16 ? ; V. i/5 ; C. 15 ? Length to the vent 18 

 in the tail. Head, without the nuuidible, 7 in the total length, and \(\ in 

 its distance from the vent. Depth before the ventrals 18, pectorals 3, 

 and ventrals I'OU in the head. 



