ccl 



the larger: deciduous ones on the vomer and palatines. Scales of 

 moderate size. Air-vessel divided Ij a cousirietioit. Pi/loric appendages 

 ill moderate numbers. 



S. Thcrapon servus, ^\oA\. B. vi. D. 10-11/^^. A. g, L. 1. 80, 

 L. tr. \1ltl . Silveiy, wil.li llirue loiigiLiuliiial dark bunds having a 

 eliglit convexity downwards. Is found in some of the hirger rivers as tlie 

 Ilooghly, occasionally above tidal inlluencc. It attains to twelve or 

 thirteen inches in length. 



Gemis — DatsOIDes, Bleeker, 



Branchiostegals six. Pseudobranchia. Body somewhat elevated. Ei/es 

 of moderate size. Inter-maxMaries very protractile. Pre-opercle serrated ; 

 opercle with short spines. One dorsal Jin, with a deep notch, having 

 twelve stout spines, nnal with three. Caudal rounded. Scales rather small. 

 Air-vessel simple. Pyloric appendages few. 



9 Datnoides polota, Hain. Buch. Nga-hya, Burm. B. vi. D. 

 Tj-T?." A. I, L. 1. 48, L. r. 70, L. tr. 12/25, Crec. pyl. 5. Brown, 

 with six or seven narrow black vertical bands on the body, and others 

 radiating from the orbit. Is fo\ind thronghout the lower portions of 

 the Ganges and Irrawaddi, ascending above tidal reach : it attains 

 about 12 inches iu length. 



Family — Sci^enid^, Cuv. 



Brancliioste"al3 seven. PseudoLvancliias sometiincs concealed. Body coinpressed and 

 latlier "elongate. Eyes lateral, of moderate or small bizo. Mouth in front of or 

 below Bnout. Clieeke unarmed i opercles Bometinies weakly armed. Mueiferous 

 system on llie liead well developed. Teeth in villil'orm bands: canines present 

 in some genera, but neither cutting nor molar ones in the jaws : palate edentidous. 

 Two dorsal fins, the second much more developed than the first, or than the anal : 

 spines of first dorsal usually feeble: anal with two spines: pectoral rays 

 branched : vcntrals thoracic, having one spine and five rays. Scales ctenoid. 

 Lateral Hue complete, often continued on to the caudal fin. Stomach cffical. 

 Pyloric appendages geneially few. Air-vessel, when present, as a i-ule, with 

 branching or elongated appendages. 



Genus—Scl.t:NA, Cuv. 



JoliHius, B\och: Corvina, pt., Ciiv. : ieios^owwi, pt., Ciiv. & Val. : 



IIomoprion,\lo\\i. , , . j ^i ■ j 



Pseudobranehia. Body oblong. Eyes of moderate size, and the tnter-or- 

 hital space rather broad and slightly convex. Snout rounded ; the upper Jaw 

 lonaerthan the lower, or both ecpial. Cleft of mouth horizontal or slightly 

 obiiaue Barbels absent. The outer row of teeth generally the largest : 

 canines absent. Air-vessel present. Pyloric appendages few, or in moderate 



u ft \ii tip T V 



This jrenus has. been subdivided artificially, in accordance to the 

 length of the second anal spine, as follows:— (1) weak and about half 

 the length of the first ray, Scictna : (2) moderately strong and near y two- 

 thirds as long as the first ray, Johnius : (3) very strong and about 

 cauallinsi- the fust ray in length, Corvina. „ , , , , 



' S Sn.euacuilor,\\■M^^.■.\V^^\^. Velta helehellee, T.xm.: Bvtahl^^.A 

 Puttheri-ki, Ooi-mh: Nga-pok-thiu, Burm. B. vii. D. 10/,',, A. j, Ca.c 



