Art. VI.] Herrick, Taste in Fishes^ 45 



Similar terminal buds have been found in the outer skin of 

 many species of Teleostomes and in Cyclostomes, but, so far as 

 certainly known, nowhere else among vertebrates (save on the 

 hps of some other classes). 'Their distribution among the fishes 



Fig. I. Dorsal view of the lirain of the adult yellow cat fish (Leptops 

 olivaris Kaf.). The olfactory bulbs with most of their crura have been re- 

 moved; also the membranous roof of the fourth ventricle, exposing the tacial 

 and vagal lobes. This ventricle is bounded behind by a transverse ridge con- 

 taining the commissura infima Halleri and the commissural nucleus of Cajal. 

 The posterior pair of tuberosities, nexi to the commissure, are the vagal lobes^ 

 the anterior pair, next to the cerebellum, are the facial lobes. X 2. 



is very irregular, being most abundant among the siluroids, 

 cyprinoids, ganoids and cyclostomes, in general bottom fishes of 

 sluggish habit, often living in mud and rarely belonging to the 

 predacious types which find their food chiefly by the sense of 

 sight. The following list of fishes which have been shown to 

 possess terminal buds on the outer skin is by no means com- 

 plete, but will serve to illustrate the wide range of species which 

 have acquired this peculiarity: 



FISHES POSSESSING TERMINAL BUDS ON THE OUTER SKIN. 



Acerina. On fins and body (Merkel, '80). 



Acipenser siurio, sturgeon. On barbel (Merkel, '80). Also 



other sturgeons. 

 Agofius cataphr actus, pogge. On the villiform tentacles beneath 



the head (Bateson, '90). 

 Anteiurus inelas, cat fish, and other North American Siluridae. 



On barbletsand nearly the whole body surface (Herrick, '01). 

 Anna calva, bowfin. On skin of head and other parts (Allis, '97). , 

 Angiiilla vulgaris, eel. On the fins, lips and anterior nostril' 



(Merkel, '80; Bateson, '90). 



