320 DR. A. GUNTHER ON A NEW PERCOID FISH. [Apr. 18, 



E. Newt. Ibis, 1863, p. 458; Verr. in Vins. Voy. Madag. Ann. B. 

 p. 4 (1865); Schl. & Poll. Faun. Madag. Ois. p. 160 (1868). 



One specimen in Mr. Crossley's last collection. Mr. Plant sent a 

 quantity of this species in one of his consignments. 



4. Description of a new Percoid Fish from the Macquaric 

 River. By Dr. A. Gunther, F.Z.S. 



[Received April 12, 1871.] 

 (Plate XXXIII.) 



The British Museum has recently received an example of an nn- 

 described Percoid Fish from the Macquarie River, which, although 

 allied to Lates and Oliyorus, may be regarded as the type of a di- 

 stinct genus, to be characterized thus : — 



Ctenolates. 



Seven branchiostegals ; pseudobranchiae well developed. All the 

 teeth villiform, in bands ; teeth on the palatine bones as well as on 

 the vomer ; tongue smooth. The spinous dorsal fin is continuous 

 with the soft, and composed of ten strong spines ; three anal spines. 

 Operculum with a flat spine ; prseoperculum finely serrated behind, 

 and with small denticulations on the lower limb ; praeorbital ser- 

 rated. Scales small, strongly ctenoid. [Pyloric appendages ? *] 



Ctenolates macquariensis. (Plate XXXIII.) 



B. 7. D. jf A. f. L. lat. 72. L. transv. 12/28. 



The height of the body is two-fifths of the total length (without 

 caudal), the length of the head one-third. The upper profile is very 

 convex above the nape, and deeply concave above the occiput. 

 Mouth of moderate width, the maxillary extending to below the 

 middle of the eye. Mandible prominent. The diameter of the eye 

 is one-half of the extent of the snout, and one-fourth of the post- 

 oibital portion of the head. Scales on the cheek numerous, only 

 half the size of those of the operculum. The denticulations of the 

 lower prseopercular limb are small, irregularly arranged, directed 

 forwards. Dorsal spines strong, the fourth the longest, one-third 

 of the length of the head ; the ninth and tenth are equal in length, 

 much shorter than the rays. Anal spines very strong. Caudal 

 fins slightly rounded. Pectoral nearly half as long as the head, 

 rounded. Greenish grey, silvery below. 



Total length 1 2 inches. 



* The intestines have been unfortunately removed by the collector. 



