28 Mr. J. Ball's Botanical Notes of a Tour in Ireland. 



Petromyzon Planeri, Cuv. Fringed-lipped Lamprey. — 

 I am indebted to Mr. R. Ball for two specimens of this fishj 

 which were obtained in the vicinity of Naas, county of Kildare. 

 They are 4| and 5 inches in length respectively ; the smaller 

 one only has the " anal sheath/^ which is two lines long. (See 

 fig. in Yarr. B. F. vol. ii. p. 457.) The dentition in these spe- 

 cimens is similar to that shoAvn in Mr. Yarrell's figure of P. 

 fluviatilis, and consequently in this character they do not ac- 

 cord with his figure of the mouth of P. Planeri ; in this same 

 M^ood-cut however, the chief peculiarity of the species — the 

 fringed lip — is well represented. The dentition or " armature 

 of the mouth" of P.fluviatilis and P. Planeri is similar, as re- 

 marked by Mr. Jenyns*. 



April 2, 1838. From the Rev. Charles Mayne, Vicar Ge- 

 neral of Cashel — to whose kindness I have in several instances 

 been indebted for specimens of fishes, &c., from the river 

 Shannon — I to-day received a lamprey, 4| inches in length, 

 recently taken in the vicinity of Killaloe, and which proved 

 to be the P. Planeri. 



Addendum to vol. i. p. 356. 



GoBius GRACILIS. Dublin, June 1838. — In the collection 

 of my friend Robert Ball, Esq. of this city, there are two spe- 

 cimens of Gobius gracilis about 3 inches in length, from 

 Youghal. On closely comparing them with individuals of 

 Gobius minutus of equal size, the differences in so far as they 

 are above mentioned are very obvious ; but further, as in those 

 before examined, I cannot perceive any constant characters. 



III. — Botanical Notes of a Tour in Ireland, with Notices of 

 some new Bi'itish Plants. By J. Ball, Esq., of Christ 

 College, Cambridge. 



The attention of British naturalists having been recently di- 

 rected towards the wide field for investigation which Ireland 

 presents to them, it may perhaps not be inappropriate to offer 

 some additional information for the botanical tourist, gathered 



* Dublin, June 1838. — Specimens of this Lamprey have lately been re- 

 ceived by R. Ball, Esq. from Inch river, about ten miles north-west of 

 Youghal. 



