TRIFURCATED BLENNY. 175 



Pennant. Habit resembling that of the Gadus 

 Tau 9 the head being depressed and very broad ; 

 the eyes large ; the irides yellowish ; the mouth 

 very wide, with irregular rows of incurvated teeth: 

 in the roof of the mouth a semilunar congeries of 

 teeth : no tongue ; beneath the lower lips a small 

 beard : body compressed from the setting on of 

 the pectoral fins, but remarkably so as it approaches 

 the tail, growing very slender near that part : on 

 the beginning of the back a furrow containing the 

 rudiment of a first dorsal fin: the second dorsal 

 fin reaches almost to the tail, and the anal fin 

 corresponds : above the pectoral fins on each side, 

 is a row of tubercles, nine or ten in number, from 

 the last of which commences the lateral line, which 

 at its middle descends in a curved direction, and 

 from thence continues strait to the tail : the ventral 

 fins w r ere very slender, and deeply trifurcated : the 

 pectoral ones rounded and of moderate size : the 

 length of the specimen described was twelve inches; 

 the colour a deep brown, except the foldings of the 

 lips, which were snow-white, giving a singular 

 appearance to the animal. This species is evidently 

 allied to the Gadus Tau, and was first discovered 

 by Mr. Davies near Beaumaris. 



