5. WONAf'ANTIirs. USy 



d-g. Half-grown. Singapore. 



h. Adult female. Amboyna, Purchased of Hr, Frank. 



?". Adult. Coram. Purchased of Hr. Fraidc. 



/.-. Several young specimens. Australia. Purchased of ]Mr. Dalton. 



13, Monacanthus sulcatus. 



IVIonacanthus sulcatus, Jlollard, Ann. Sc. A'tif. 1854, ii. p. 303, pi. 14. 



fig. 3 (not good). 

 isogramma, Bleek. Nat. Tyds. Ned. Ind. xiii. 1857, p. 367 ; Atl. 



Ichth. Balist. p. 128, pi. 222. fig. 1. 



D. 29-32. A. 31-33. 



Scales minute, spiny, each with a keel, the keels conjJuent, form- 

 imj parallel lonrfitudinal raised lines. Body rather elevated, its 

 depth beiug a little more than one-half of the total length (without 

 caudal). The dorsal profile between the dorsal fins somewhat oblique, 

 the commencement of the second dorsal fin being the highest point. 

 Snout slightly pointed, with the upper profile nearly straight. Dor- 

 sal spine of moderate strength, tapering, shorter than the head, armed 

 ■with two series of barbs behind, situated above the posterior part, of 

 the orbit. Caudal fin rounded, sometimes with the upper ray pro- 

 duced into a short filament. Dorsal and anal fins of moderate height. 

 Ventral spine moveable, tapei'ing, rough, free from and extending 

 beyond the ventral flap. Brown, irregularly marbled with darker ; 

 sometimes a rounded blackish blotch below the anterior third of the 

 dorsal. 



East-Indian archipelago ; Chinese and Australian seas. 



a. Three and a half inches long. Java. From Dr. Bleeker's Col- 

 lection. — Type of M. isogramma. 



h,r., d. Three and a half inches long. China. 



e,f. Three and a half inches long. North China. Purcliuscd of 

 Mr. Jamrach. 



fl-h Three and a half inches long. Australia. Collected by Mr. 

 McGillivray. 



i-m. Three and a haK inches long. From the Haslar Collecvion, 



14. Monacanthus setifer. • 



Monacauthus setifer, Bennett, Proc. Comm. Zool. Soc. 1830, p. 112; 



IloUard, Ann. Sc. Not. 1854, ii. p. 342, pi. 12. fig. 4. 

 cinifer, Scldep. Faun. Japan. Poiss. p. 290, pi. 1.30. fig. 1 ; Bleelc. 



Act. Soc. Sc. Indo-Nccrl. iii. Japan, iv. p. .31. 

 varius, Ranzani, Nov. Comm. Ac. Sc. Inst. Bonon. 1842, v. p. 0, 



tab. 2. 

 broccus, Storer, Proc. Bast. Soc. Nat. Hist. 1842, p. 84 (not 



Mitch.) 

 filamentosus, Valenc. in Webb Sr Be)-thel. lies Canar. Poiss. p. 95, 



pi. 17. fig. 1. 

 — — galliiiula, Valenc. I. c. 

 signifer, Storer, Mem. Am. Ac. Ii. 184G, p. 497, and viii. p. 42G 



(pi i^. fig. 1). 

 auriga, Loire, Proc. Zool. Soc. 1850, p. 253. 



