488 Mr. C. T. "Regan on the British and 



A specimen said, on rather doubtful authority, to have come 

 from Lough Corrib is in every way similar to those from the 

 Shannon. 



According to some of my correspondents, Pollan are found 

 in the Lakes of Killarney, but they have not been able to 

 send me any, and it is possible that Shad have been mistaken 

 for them. Mr. E. "W. L. Holt writes me that he tried, the 

 lake with suitable nets, but got no Pollan, and he does not 

 think there are any there. Day (Fish. Britain, ii. p. 129) 

 eays that in 1852 a Mr. Ffennell exhibited specimens of 

 Pollan from Lough Neagh and from Killarney to the Dublin 

 Natural History Society. I am indebted to Mr. A. R. 

 Nichols for the original report of this exhibition, which 

 appeared in ' Saunders's News-Letters/ Tuesday, June 15, 

 1852, and which reads as follows: — "The usual monthly 

 meeting was held on Thursday [June 10th] ; — Mr. Ffennell 

 j roluced specimens of the Pollan taken in November, 1851, 

 in Lough Neagh and some taken in Killarney the 8th May 

 last and observed on the difficulty of touching them without 

 removing the scales. He directed the attention of the 

 meeting to the difference in shape of the head and gill cover 

 of the specimens from the two localities." 



3. Coregonus clupeoides. 

 The Powan. 



Corcffonm clupeoides, Lacep. Hist. Nat. Poiss. v. p. G98 (1803). 

 Coregomis cepedei, ParnelL Ann. & Mag. Nat. Hist. i. 1838, p. 162, fig. 

 Coregonus microeephalus, Parnell, t. c. p. 103, tig. 

 Coregonus clupeoides (part.), Giinth. Cat. Fish. vi. p. 188 (1866) ; Day, 

 Pish. Britain, ii. p. 127 ^1884). 



Depth of body 44, to 4^ in the length, length of head 4£ 

 to 4|. Snout as long as or a little longer than eye, the 

 diameter of which is 4J to A\ in the length of head ; inter- 

 orbital width 3^ to 3| in the length of head. Snout vertically 

 truncated, with the lower jaw included within the upper ; 

 maxillary extending to the vertical from the anterior edge of 

 eye, its length \ or a little more than \ the length of head. 

 20 or 21 gill-rakers on the lower part of the anterior arch. 

 76 to 84 scales in a longitudinal series, 8 or 9 in a transverse 

 series from origin of dorsal fin to lateral line, "i\ to 8.^ be- 

 tween lateral line and base of pelvic fin, 20 or 21 round the 

 caudal peduncle. Dorsal fin with 9 to 11 branched, rays; 

 origin nearer to end of snout than to base of caudal fin ; 

 longest ray | to \ the length of head. Anal with 9 to 11 

 branched rays. Pectoral f to -J the length of head, ex- 



