Occurrence of Gobius capito in Cornwall. 089 
Gobius paganellus, Linn. 
(Rock-Goby.) 
1758. Gobius paganellus, Linn, Syst. Nat. ed. x. t. i. p. 263. 
1836. Gobius paganellus, Cuyv. & Val. Hist. Nat. Poiss. t. xii. p. 22 (sec. 
Moreau). 
1839. Gobius niger, Thompson, Ann. & Mag. Nat. Hist. vol. ii. p. 417 
(sec. Giinther). 
1863. Gobius paganellus, Couch, Fishes of the British Islands, ii. p. 157, 
fig. 99. 
1880. Gobius paganellus, Day, Fishes of Great Brit. and Ivel. i. p. 162, 
pl. lii. fig. 2. 
1881. Gobiws paganellus, Moreau, Hist. Nat. Poissons de France, ii. 
p. 225. 
1897. Gobius paganellus, Beckford, Proc. Dors. Nat. Hist. Field-Club, 
XViil. p. 27, 
1898. Gobius paganellus, Holt & Byrne, Journ. Mar. Biol. Assoc. v. 
3385 
p. 335. 
1903. Gobius paganellus, Holt & Byrne, Rep. Sea and Inl. Fisheries of 
Ireland, p. 45, pl.i. figs. 1 (2), 2(¢). 
It is fairly evident from Linneus’s diagnosis that the 
species attributed to this name by Cuvier and Valenciennes is 
in all probability that which the older author characterized, 
for he says: “lutea transversa in summo pinne dorsalis 
prime.’ Cuvier remarks: ‘le bord de la nageoire porte 
toujours une large bande d’un jaune citron.”’ This, indeed, is 
the best character by which the species may be distinguished 
at a glance from G. niger or G. capito. 
Holt and Byrne give a detailed description, but the 
following characters may be pointed out. It may be distin- 
guished from G. niger, (1) by the yellow or orange upper 
marginal band on the first dorsal, (2) by the smaller size of 
the scales, not less than fifty in longitudinal series, (3) by 
the normal length of the median rays in the first dorsal, and 
(4) by the greater number of the filiform rays on the upper 
anterlor margins of the pectorals; from G. capito it may be 
recognized, (1) by the yellow marginal band on the first 
dorsal, (2) by the slightly larger scales, about 68 in G. capito, 
longitudinal series, (3) by the anterior membrane of the 
ventral fin being united throughout, (4) by the less propor- 
tional width of the interorbital space, and (5) by the adult 
being limited to 4? inches total length. 
Holt and Byrne regard this species as entirely confined to 
rock-pools between the tides; not, like G. niger, an estuarine 
species. It occurs from the north of Ireland and Scotland to 
the south coast of England. 
