Landacre, Taste Buds of Ameiurus 



27 



(C) A group in front of the eye and back of the nasal barblet and 

 over the supra-orbital line and innervated by the first four main 

 branches of the ramus oph. sup. V. 



(D) A group lying under the lineof closure of the nasal slit whose 

 innervation Workman does not give, or at least does not distin- 

 guish from the other buds about the nasal opening. 



(E) A group in front of the eye and under the supra-orbital line 

 and probably innervated by some of the fibers supplying group C. 



TABLE VII. 



Table showing the number of buds at different ages in the various subdivisions of the nasal group 

 and their extent as indicated by the section numbers between which buds are found (sections 7 microns 

 thick). 



The single columns of Table VII show the number of buds and 

 the double columns give the extent of groups expressed in sections. 

 It will be seen from the table that three of these subdivisions appear 

 in N and one additional in O'. The presence of two buds on the 

 skin in front of the nasal barblet, group A, indicates that possibly 

 the later appearance of this subdivision is an individual variation. 

 It is possible that series E which lies in front of the eye and below 

 the supra-orbital line belongs to D, though I have catalogued it 

 separately, and that the sections in which these buds are located 

 indicate the posterior extent of that group. 



The first buds in this group appear 25 hours later than the first 

 buds of the preceding group and are isolated from them in position. 

 All the buds of this group lie about the nasal opening and on the 

 dorso-lateral portions of the head, while those of the preceding 

 group are on the lip and maxillary barblet. The posterior buds of 

 the lip and barblet group lie farther from the anterior end of the 



