15. TETKAROGE. 133 



scales. Pr8eorb:tal and praeopereulum armed. One dorsal fin with 

 twelve to seventeen spines ; the spinous portion withont any division ; 

 no pectoral appendages. Teeth in the jaws, on the vomer, and gene- 

 rally on the palatine bones. Air-bladder present ; pyloric appendages 

 in small number. No cleft behind the fourth gill. 

 Indian Ocean and Archipelago. 



1. Tetraroge barbata. 



Apistus barbatus, Cuv. c^ Val. iv. p. 413 ; Bleeker, Act. Soc. Nederl. i. 



Amboina, p. 36. 

 melas, Bleeher, Natuurk, Tydschr. Nederl Ltd. i. p. 26. 



B. 7. D.^. A. 4. 



Two barbels near the symphysis of the lower jaw ; the upper 

 maxillary reaches to below the posterior half of the orbit. No scales. 

 The spinous dorsal, without division, begins above the middle of the 

 orbit ; the third anal spine is the longest. Blackish or brownish, 

 sometimes speckled with black ; caudal variegated with brownish. 

 Palatine teeth. 

 Molucca Sea. 



2. Tetraroge amblycephalus. 

 Apistus amblycephalus, Bleeker, Sclerop. p. 27. 

 B. 7. D. f. A. |. 



Barbels none. The cleft of the mouth is very slightly obhque ; the 

 jaws are equal in front. Scales minute, rudimentary. The spinous 

 dorsal, without division, begins above the posterior margin of the eye. 

 The ventrals do not reach to the anal. Greyish-brown, densely varie- 

 gated with black. {Bl.) 



Sea of Padang. 



3. Tetraroge rubripinnis. 



Apistus rubripinnis, Temm. SfSchleg. Faun. Jap. Poiss. p. 49. pi. 22. f. 2. 

 D.f A.i. V.1/4. 



Barbels none. Scales minute, rudimentary. The interocular space 

 much narrower than the diameter of the eye. The spinous dorsal, 

 without division, begins above the eye. Marbled with pale brown, 

 reddish and bliiish. The spinous dorsal with a black blotch between 

 the sixth and ninth spines ; all the other fins pale reddish, immacu- 

 late. (ScJiIeg.) 



Sea of Japan. 



4. Tetraroge macracanthiis. 



Apistus macraeautlius, Bleeker, Amboina l^- Ceram, p. 267. 

 B.7. D.^. A.|. 



Barbels none. Scales minute, rudimentary. The dorsal begins 

 before the eye, is very high anteriorly, Avithout any notch, and 

 slightly contiguous with the caudal. Brown. Palatine teeth. (BL) 



Sea of Wahai (North Ceram). 



