UY ALLAN K. MCCULLOCH. 275 



men, and very distinct in another, according to the medium of 

 preservation. 



Described from two specimens, 227-341 mm. long, in the Aus- 

 tralian Museum collection. The smaller one is figured, but its 

 anterior dorsal fin being malformed, this is corrected from the 

 larger example. 



I have also examined a still larger specimen in the Tasmanian 

 Museum, which is possibly the type of the species. Kent's notes 

 only refer to the great development of the rostral tentacle and 

 the size of the specimen ^15 inches, but Johnston later recorded 

 the number of spines and rays in the dorsal and anal fins. 



Loc. — Tamar River, Tasmania. 



Genus Petraites Ogilby. 



Petraites incertus, sp.nov. 



(Plate xxxvii., fig.3.) 



D.3, 29/4; A.2/23-24; P.ll; V.3; C.9. Head 3-8-406, depth 

 before the anal 4'3-4-9 in the length to the hypural. Eye 5-5-1, 

 snout 3-7-3-8 in the head. Interorbital space 1-8-2-1 in the eye. 

 First dorsal spine 1-6-1-9, first dorsal ray 1-6, and fourth last 

 anal ray 1-4-1-9 in the head. Median pectoral ray 1*3, median 

 ventral ray 1-4-1 5, and median caudal rays 1-3-1-6 in the head. 



Body moderately elevated, snout pointed. Maxillary reaching 

 to below hinder margin of the eye. Tentacle of anterior nostril 

 minute; orbital tentacle well developed, with a few small lobes. 

 Head with several series of muciferous canals and minute pores 

 surrounding the eyes, and extending along the margin of the 

 preorbital and preoperculum, and beneath the lower jaw; others 

 cross the nape and join the lateral line. 



Cardiform teeth in a single row on the upper jaw, followed 

 by two patches of villiform teeth anteriorly. They are similar 

 in the lower jaw, but the villiform patches are smaller. Vomer 

 with two bands of villiform teeth which are united on the 

 median line Palatines toothless. 



Body covered with minute rudimentary scales which extend 

 forward to the third dorsal spine; head naked. Lateral line 

 almost straight from the operculum to a point above the end of 

 the pectoral; thence it curves downward to the middle of the 



