266 RECORDS OK THE ArSTRAMAN MUSETM. 



tube overlianping tlie lip, the posterior a large opening near the npper 

 niaigin of the eye witli skinny edges. Mouth oblique, the maxilla reaching 

 backward to below the posterior fourth of the eye. A broad band of 

 viliiform teeth in the premaxillaries, some of which are a little larger 

 than the others near the symphysis, atid an outer row of strong conical, 

 but small teeth ; mandible with a band of viliiform teeth, the inner row 

 of which is a little larger than the others, and an outer row of conical 

 teeth ; posterioily these give place to an inner row of similar teeth which 

 increases in size backwards. Tongue broadly spatulate and fiee anteriorly, 

 its margin i-ounded. Gill-openings extending far forward below, the 

 space separating them being narrower than the eye ; exposed edge of tlie 

 shoulder gii'dle quite smooth. 



Body broader than deep anteriorly, becoming compressed posteriorly. 

 It is completely covered with rather sniall ctenoid scales which are 

 subequal in size on the sides and tail, but are smaller on tlie nape, breast, 

 and pectoral base ; they extend onto the bases oi the pectoral and caudal 

 tins between the rays. Genital papilla large. 



First dorsal commencing before the middle of the pectoral, its margin 

 rounded ; the second and third spines are longest, and the sixth is more 

 widely separated than the others. The second dorsal rays increase slightly 

 in length to the penultimate, which is a little longer than the highest 

 s[)ine ; the last is double, and reaches somewliat more than half its distance 

 from the caudal base. Anal almost opposite the second dorsal, and of 

 similar form ; the rays increase in height to tlie seventh. Pectoral 

 rounded, the tenth ray longest but not reaching the vertical of the vent. 

 Ventrals inserted a little before the pectorals, the fourth rays longest, 

 and reaching about two-thirds of their distance from the vent. Caudal 

 rounded. 



Colour Dark biown after long preservation, without definite 



markings. 



Described froTu the holotype of Eleotrix immacvldtKs, 480 mm. long. 

 It proves its original description to be inaccurate in its profiortional 

 details, particularly as regards the measurements of the eye and the 

 interorbital space. 



Variulion. — An example 335 mm. long, which is a cotype of E. 

 crescent, De Vis, is quite similar in all its structural details to the 

 specimen described, dilTering only in some slight proportional measure- 

 ments which aie coincident with its smaller size. Ant)ther specimen 

 which is only 181 mm. long, is much lighter in coloui-, being sandy 

 yellow with grey lines along each row of scales on the back and sides, 

 while the dorsal and caudal tins are mottled with gre}' spots ; it has the 

 following proportions: — Head 27 in the length to the hypural joint; 

 depth before the ventrals 56 in the same ; breadth before the pectoral 

 bases 01 greater than the depth ; depth of the caudal peduncle 33 in 

 the head ; eye 8 in the head, and 1-8 in its distance from the jiremaxillaiy 

 symphysis; it is TO in the interorbital space, which is 4-1 in the head. 



'^'.'/ """.'/ '".'/• — Steindachner's description of E. linvolatun from Rock- 

 hampton agrees very well with a cotype of E. crescens, De Vis, from the 



