TCIITIIYOLOGY. 225 



Caudal yellow, with a di'i-p black baiul, obli(jucIy wliitc-bonlcrod above, and wliito- 

 bordercd btdow. 



The Andaraans ami Aiakaii coast. 



P. SERRATUS, CuV. ct Val. 



B. vii.; D. 1:8: 11: 12; P. 19; Y. 1 ; A. 11 ; C. 13. 



Crests on the head bones serrated, but spineless. A finely ileiiticulated ridj^e 

 from the eve to the ])reopercie, and a less distinct smooth one above it. Scales with 

 rou-jh borders. Reddish brown above, belly white. Six or ei.^ht irrep^ular brown 

 bands along the sides. Fins grey, with black points. A black blotch on the top of 

 the dor-sal. Yentrals bluish above, white below. Grows to 7 inches. 



The Andamans. 



Famili/ Cataphractidse. 



Head and body more or less angular, covered with plates, or keeled scales. 



pEGAsrs, Liniueua. 



B ranch iostegals 1. PscuddbrancliioB absent. Gill opening narrow, in front of 

 pectoral. Body l)road and depressed, covered with anchylosed plates. Xo teeth. 

 A short dorsal and anal. Pectorals horizontal and long, anterior rays shortest. Air- 

 vessel absent. 



P. DRACOXIS, L. 



B. i. ; D. 5 ; P. 1 1 ; V. 2 ; A. .5 ; C. 8. 



Belly flat. Body with two median and two lateral ridges. Three cross ridges. 

 Taif composed of eight rings. Lateral edges of snout denticulated. Body with 

 brown reticulations. Snout and last caudal ring black. 



The Andamaus. 



Fdiiiih/ Gobiidae. 



A. Guliina. 



Yentrals forming a disk, united along their whole extent, or their basal halves 

 only. Two dorsals. 



GoBirs, Artedi. 



Branchiostegals 5. Pseudobranchia^ Yentrals adherent to the abdomen only 

 at their bases. Simple teeth in one or more rows above, and two or more below. 



A. Lateral recurved canines in the mandible. 

 G. BvxoExsis, Bicliardson. 

 B. V. ; D. 6 A- ; P. 19 ; Y. \ ; A. -^^. 



Teeth, 2 or 3 rows in cither jaw, 10 outer enlarged ones above, and the outer 

 row below enlarged and subhurizontal. Dorsal spines weak, with filiform ends. 

 Dorsals equal in height and but little apart. Colour greenish, with 8 or 10 darkish 

 cross-bars. A band from the snout through the eye to the end of the soft dorsal, 

 black anteriorly, then yellow, and a sctcond from the mouth across the opercles to the 

 tail, black anteriorly, then golden. A sui)erior dark spot at base of the caudal. 

 Anal dark margined. 



The Andamans. 



G. rr.vTAXG, Blocker. 



B. v.; D. 6-iV; P. 17; Y. \- A. 10; C. 11. 



Teeth in several villiform rows in both jaws, tho ontcr rather enlarged. A pair 

 of small canines below. Dorsal spines flexible, with filamentous tips, the first three 

 the longest. Colour olive, spotted with rusty. Fin rays yellow, barred and dotted 



1.5 



