GOBIUS. 39 



interorbital region narrow ; jaws equal in front ; mouth extending 

 to below posterior border of eye ; teeth in a band, outer largest. 

 Dorsals VI, I 11, well separated from each other; posterior rays 

 longest, as long as head. Anal I 11, opposite to second dorsal. Pectoral 

 as long as head, with filamentous upper rays. Ventral nearly reaching 

 vent. Caudal pointed, 1^ times as long as head. Caudal peduncle 

 IJ times as long as deep. Scales ciliated, 50 in longitudinal series, 12 

 in transverse series between dorsal and anal. Pinkish yellow, head 

 purplish ; 14 or 15 purplish-black narrow bars on each side of the body ; 

 dorsal and caudal purplish black, anal purple. 



Total length 145 millim. 



Sambirano R., N.W. Madagascar. — Type in Leyden Museum. 



Fig. 21. 



Oobius polyzona. 

 Type, after Bleeker (J. e.). |. 



21. GOBIUS OCCJDENTALLS. 

 Gohius (O.ri/ufichthifs) ocddeutaUs, Bouleng. Ann. & Mag. N. H. (8) iv. 1909, 

 p. 431. 



Body strongly compressed ; depth of body 5J times in total length, 

 length of head 5 times. Head twice as long as broad ; snout rounded, 

 as long as eye, which is 4 times in length of head ; interorbital region 

 very narrow, with two strong ridges ; jaws equal in front ; mouth 

 extending to below centre of eye ; teeth in a single series ; no canines ; 

 cheek and gill-cover scaly. Dorsals VI, I 13, separated by a mere 

 notch; third simple ray longest, as long as head. Anal I 14. Pectoral 

 as long as head. Ventral terminating at a great distance from vent, with 

 a broad basal membrane, each side of which is pointed and produced. 

 Caudal acutely pointed, twice as long as head. Caudal peduncle as long 

 as deep. Scales ciliated, 60-63 in longitudinal series, 12-13 in trans- 



