ICHTHYOLOGY. H»7 



Sroi.orsis, Curler et Vah'ncieiuien. 



Branchiostcgals 5. A siiij^lo dorsal tin ■n'itli ten spines. Air-vessel simple, 

 unoonstricted. 



S. BILINEATtrS, Bloch. 



B V. ; D. ^^ ; P. 16 ; V. I ; A. } ; C. 17. 



Vertical limb of preoperclo sei'ratcil, and its angle produced and rounded. Teeth 

 villiform. Dorsal spines not strong, increasing in height to the fourth. Colour, 

 a white band from the sn(iut to the base of the dorsal ; a second from above the orbit 

 to beyond the dorsal ; a third from the upper edge of the C3'e to the lateral line. 

 A broad black-bordered yellow band from the mouth to the conimencenient of the soft 

 dorsal, with a yellow blotch below the same fin, which is edged anteriorly with black. 

 Anal black anteriorly, white behind. , 



The Andamans. 



S. OHAXAM, Forsk. 



B. v.; D. -Vi; P. 17; V. 1; A. *. 



Scaleless portion of the head covered with numerous small pores. Vertical limb 

 of preopercle strongly serrated, and more coarsely on its produced angle. Teeth fine. 

 Dorsal spines rather weak, increasing to the fifth. Colour olive, with four yollowish- 

 white bands, the third of wliich bifurcates at the shoulders into two, one above, the 

 other below the lateral line. A black spot in the pectoral axil. The anterior scales 

 below, mostly black-spotted at their base. A violet mark at the base of either lobe 

 of the tail. 



The Andamans. 



S. M0N0GK,\5IMA, CuV. Ct Val. 



B. v.; D. i,^ P. 17; V. i; A. ^ 



Upper surface of head flat and scaled nearly to the nostrils. Vertical limb of 

 preopercle, and its rounded and produced angle, evenly serrated. Dorsal spines 

 slender, increasing to the fourth. Colour olive, with a black band, one scale broad, 

 from the snout, through the eye to the tail, only rising above the lateral line behind 

 the end of the dorsal. Fins immaculate. 



The Andamans, where common. 



S. CAXCELLATUS, Cuv. et Val. 



B. V. ; D. V- ; P. 15 ; V. \ ; A. J ; C. 17. 



Scaleless portion of the head studded with fine open pores. Vertical limb of 

 preopercle serrated, more coarsely superiorly, and at its slightly produced and rounded 

 angle. Teeth fine. Dorsal spines weak, increasing to the fifth. Colour grey above, 

 whitish below. A white band to the commencement, and another below it, to the end 

 of the dorsal. A third white band from the eye as far as the end of the pectoral, 

 and a fourth from the eye to the tail. Some irregular white vertical bands cross 

 the back. A black spot between the first and thii-d dorsal spines. 



The Andamans. 



S. ciLiATUs, Lacep. 



B. V. ; D. J^*'; P. 17; V. i; A. f ; C. 17. 



A prominent ridge, with serrated edge, on the maxilla. Vertical edge of pre- 

 opercle seriated, most strongly at the angle, which is not produced. Teeth villiform. 

 ])orsal spines slender, increasing to the fifth. Colour gi-eenish olive above, paler 

 lielow. A silvery white band along the side from the head to the commencement of 

 the soft dorsal. The scales below the lateral line gold spotted. Fins reddish. 



The Andamans. 



Stnageis, Giinther. 



Branchiostcgals 5 or G. One scaleless dorsal fin, with 10 spines and 9 rays. Air- 

 vessel not constricted, but notched posteriorly. 



