66 ACAISTTHOPTERTGII. 



0/ which, or the outer only, mmj he serrated. VilKform teeth in the jaws, vomen, and palate : canines present generally 

 in both jaws and lateral canine-like ones. Two dorsal fins separated by an interspace, the first with sm spines; the 

 anal with two. Scales ctenoid,* large and deciduous. Lateral-line distinct. 



Geographical distribution.— From, the Red Sea and East coast of Airica, through the seas of India and 

 the Malay Archipelago to the Pacific. Along the coasts of India they appear to be most abundant ofi" Sind, 

 and in the Ajadamans and Nicobars. The specimen of this genus recorded from the Coromandel coast of India, 

 by Dr. Jerdon, in the 'Madras Journal Literature and Science' (1851, No. 39, p. 129) was, as I hare already 

 oiaserved (p. 57), Apogon multitceniatus. 



SYNOPSIS OF SPECIES. 



1. Cheilodiptems lineatus, D. 6/i, A. |, L. 1. 26. SHvery-red with from seven to sixteen narrow black 

 longitudinal bands, and a dark spot at the base of the caudal fin : first dorsal black between the second and 

 third spines. Red Sea, East coast of Africa, and Sind. 



2. Cheilodiptems quinquelinsatus, D. 6/i, A. f, L. 1. 25. Similar to the last with five bands. Red Sea, 

 Nicobars to the Malay Archipelago. 



1. Cheilodlpterus lineatus, Plate XVin, fig. 8 and 9 (var. Arabicus). 

 Perea lineata, Porsk. Desc. Anim. p. 42, No. 43 ; Rupp. N. W. Fische, p. 89. 

 Perca Arabica, Linn. Syst. Nat. p. 1312. 



Chdlodipterus lineatus, Lacep. iii, p. 543, pi. xxxiv, fig. 1 ; Giinther, Catal. i, p. 248 ; Klunz. Verb. z. b. 

 Ges. Wien, 1870, p. 717. 



Gentropomus macrodon, Lacep. iv, p. 273. 



Gheilodipterus octovittatus. Guv. and Val. ii, p. 163 ; Klunz. Verb. z. b. Ges. Wien, 1870, p. 717. 



Gheilodipterus Arabicus, Cuv. and Val. ii, p. 165, pi. 23. 



Gheilodipterus heptazona, Bleeker, Perc. p. 29. 



Parcumia octolineata, Bleeker, Atl. Ich. Perc. t. xxvii, fig. 2, and Apogonini, p. 75. 



B. vii, D. 6/i P. 13, V. 1/5, A. I, C. 17, L. 1. 26-27, L. tr. 3|/7i. 



Length of bead nearly 1/3, of caudal 4J to 1/5, height of body 1/4 in the total length. Eyes — diameter 

 from 4i to l"/4 in length of head, 1 to Ij diameters from end of snout, and 3/4 to 1 diameter apart. The 

 maxilla reaches to below the last third of the orbit. Vertical limb of preopercle very finely serrated in its 

 outer edge, as is also that of the horizontal Umb, where however the serrations are coarser and blunter ; the 

 other bones of the head entire. Teeth — canines in both jaws, and lateral canine-like ones. Fiiis — dorsal spines 

 weak, the second and third of the same height and equal to two-thirds of that of the body. Pectoral reaches to 

 above the. anal spines : ventral two-thirds of the distance to the anal. Caudal forked. Colours — silvery-red, 

 with horizontal bands along the head and body, the number of which appears to increase with age. In Sind 

 some specimens had only seven, others as many as sixteen. One black band commencing above the snout 

 proceeds to the base of the first dorsal fin : a second arising on the snout in common with that of the opposite 

 side just anterior to the upper one and passes along the back above the lateral-line to the upper side of the 

 caudal fin : the third commences on the side of the snout and passes through the eye, from the hind edge of 

 which about four bands arise and are continued along the body : there are also generally two more from below 

 the eye. A black spot exists at the base of the caudal fin, which is surrounded by a light edge. Pins red, the 

 first dorsal black between the second and third spines. In adults intermediate bands appear between those 

 described as existing in the young. 



In the variety (fig. 9) which=C'. Arabicus, C.V. it is bright yellow around the caudal blotch. The 

 specimen came from Gwadar. 



Habitat. — Red Sea, East coast of Africa, seas of India, Andamans to the Malay Archipelago and 

 beyond. 



2. Gheilodipterus quinquelineatus. 



Cuv. and Val. ii, p. 167 ; Rijpp. N. W. Fische, p. 89 ; Lesson. Zool. Voy. Duperr. ii, p. 237 ; Bleeker, 

 Mol. p. 252 ; Klunz. Verb. z. b. Ges. Wien, 1870, p. 716. 



Apogon novemstriatus, Riippell, N. W. Pische, p. 85, t. 22, f. 1. 



Ghilodipterus quinquelineatus, Giinther, Catal. i, p. 248. 



Paramia quinquelineata, Bleeker, Bouro, p. 147, Atl. Ich. Perc. t. xlviii, fig. 2, and Apogonini, p. 76. 



B. vii, D. 6/i, P. 15, V. 1/5, A. |, C. 17, L. 1. 25, L. tr. 2/7. 



Length of head about 2/7, of caudal 1/5, height of body 2/9 of the total length. Uyes— diameter 1/3 of 

 length of head, 3/4 of a diameter from end of snout, and also apart. Vertical limb of preopercle serrated along 

 its outer edge. TeeiA— generic. Fins— dorsal spines weak, second and third of the same height, and about 

 equal to half of that of the body. Caudal forked. Colours — with a reddish tinge having five black banda 



* Bleeker has separated those species in which (although their dentition is similar) the scales-are smaller andcTcloid and the 

 caudal fin convex instead of emarginate, into a distinct genus, Pseuxlamia. ,"..•= 



