ICHTHTOLOOY. 247 



b. Tedh in the phtrywjeah conjliwnt and pavement-like.. 



PsKUDODAX, Bleeher. 



One pair of upper and two pairs of lower ineisors, broad, ami with cutting lateral 

 edges. An enlarged row of seales at the base of tho caudal tin. 



P. MOLUCCANUS, CuV. I't Val. 



B. vi.; Y).\l; P. 15; V. \ ; K.-h\ C. 14. 



Teeth green, each outer lower incisor i-ecurved. Colour brownish-red, paler on 

 the belly, most of the body scales with a dark spot. Dorsal and anal basally yidlow, 

 the former with black reticulated lines and a blue margin. Anal with 2 to 4 dark 

 undulating bands, and a dark blue-margiuod outer edge. Caudal brown, with a blue 

 posterior edge, and dark banded vertically. 



Tlie Nicobars. 



Calltodon, Citvier et Valeneienn.es. 



Teeth in both jaws anteriorly compressed and imbricated in 1 row above, and 2 

 bolow, and laterally soldered into one deep-cutting lamina. Anterior nostril with a 

 barbel-like prolongation. Scales large. 



C. vnuDEscEXs, Eiipp. 



B. vi. ; D. 'P^; P. 13; Y. V ; A. ;; C. 13. 



Colour variable. Brown, marbled and spotted with darker, or green, with dots on 

 the sides, and r(>d streaks on tho snout. A lilack base to the pectoral, and a black 

 spot between the iirst and second dorsal spines seem pretty constant. In some 

 the colour is olive above, and white below, and most of the scales with a bi'ick-red 

 centre, and white spots. Head and middle of body with red spots, dark, with dark 

 centres. Some red lines on the head, and a pale lateral line to the root of the tail. 

 Dorsal and caudal wath reddish-yellow spots. Anal with a black edge, and 2 inoscu- 

 lating red bands inclosing white spots. Veutrals white. Pectorals yellow. 



The Andamans. 



PsEUDo.scAEUS, Blcehcr. 



The upper lip projecting, and double for its whole length. The anterior teeth 

 soldered together, and ranged quincuncially. Scales large. Enlarged scales at the 

 base of the caudal fin. 



P. -EEUciiN'osrs, Cuv. et Val. 



B. v.; D. ^'V; P. 14; V. J; A. J; C. 13. 



Olivaceous, with 3 longitudinal silver bands along the belly, below the pectoral 



The Andamans. 



P. RivuLATUs, Cuv. et Yal. 



B. v.; D. i\; P. 1415; V. \; A. f ; C. 13. 



Green, each scale with a reddish base. Snout and cheeks with undulating green 

 lines on a reddish ground. A narrow green band along the base of the dorsal, with 

 an intermediate row of spots. Anal green, edged with darker. Caudal with green 

 spots. 



The Andamans. 



P. ERTTHBODON, CuV. ct Val. 



B. v.; D. T^,-; P. 15; V. 1 ; A. f ; C. 13. 



Purplish brown, the scales darker at their margins. Tho enlarged caudal scales 

 dull yellowish. A violet tint in tho thoracic region. Snout greenish yellow. Ver- 

 tical fins brown. The dorsal black-margined. Pectoral transparent. 



The Andamans. 



fin 



