third anal spine longest ; caudal pointed, its lower border truncated. 

 Scales a few small ones imbedded in the skin on the body. 

 Colour brownish black ; pectoral with a white border. 



Fig. 27. Arnhlyapistus macracanthus. 



Hob. Andamans and Malay Archipelago ; attaining to at least 3| 

 inches in length. 



9. Genus MICROPUS, Gray. 



Syn. Caracanthus, Kroyer ; Amphiprionichthys, Bleeker ; Centropus, 

 Kner ; Crossoderma, Guichenot. 



Branchiostegals four to six. Body strongly compressed, short 

 and deep. Preorbital, pre-, sub-, and interopercles armed. Yilli- 

 form teeth in the jaws only. One or two dorsal fins, the first with 

 seven or eight spines, the anal with two; no free pectoral rays; 

 ventrals rudimentary ; some of the articulated fin-rays branched. 

 Body scaleless, but covered with small tubercles. (No cleft behind 

 the fourth gill.) 



Geographical Distribution. Small fishes distributed through the 

 seas of India to the Malay Archipelago and Pacific. 



814. (1.) Micropus zeylonicus. (Fig. 28.) 



Amphiprionichthys zeylonenpis, Day, P. Z. S. 1869, p. 515. 

 Micropus zeylonicus, i)ay, Fish. India, p. 158, pi. xxxviii, fig. 6 (see 

 synon.). 



B. vi. D. 7/14. P. 13. V. 1/3 ?. A. 2/11. C. 15. 



Length of head nearly 3, height of body 2 to 2| in the total 

 length. Eyes high up, 1| diameters from end of snout and 1 

 apart. Preopercle with five blunt spines. A serrated ridge 

 passes from the batik of the orbit towards the occiput. Fins 

 dorsal fin has a notch between its two portions, the third and 



