" Back bluish green; all besides silvery: five barbules".
Midge (Ciliata glauca), Couch in Loud. Mag. of Nat. Hist. vol. v. p. 15. fig. 2. and p. 741.
One inch three lines. Couch.
" Body moderately elongated, the proportions much resembling those of the Whiting: head obtuse: upper jaw longest, having four barbs, the under jaw one; teeth in both jaws: gill-membrane with seven rays: eyes large and bright: pectoral and ventral fins rather large for the size of the fish: a ciliated membrane placed in a chink behind the head: the dorsal and anal fins reaching almost to the tail, which last is large and straight: scales deciduous. Colour of the back bluish green: belly and fins silvery." Couch.
This fish, which has been noticed only by Mr. Couch, will probably prove eventually to be the fry of some other species. This gentleman states that it is found in multitudes on the Cornish coast, swimming near the surface; and that it is migratory, making its first appearance about the middle of May. When Winter approaches, they disappear; he is disposed, however, to think that they do not go to a great distance.
Mem. vol. 11. p. 449. Flem. Brit. An. p. 193.
"Head obtuse: cirri three; two before the nostrils, and one on the chin: upper jaw longest: eyes lateral; irides silvery: all the fins of a pale colour, and the whole fish of a silvery resplendence, except the back, which is blue, changeable to dark green: pectorals rounded, with sixteen or eighteen rays: ventrals with six or seven, the middle ray considerably the longest, and placed much before the pectorals: first dorsal commencing above the gills; the rays very minute and obscure, the first excepted, which is much the longest, but more than thirty have been counted: second dorsal commencing close to the other, in a line with the end of the pectorals, and terminating close to the caudal; the rays innumerable: anal beginning immediately behind the vent, and terminating even with the dorsal: caudal nearly even at the end. Length about two inches." Mont.
This fish is supposed by Montagu to constitute a new species. He mentions having noticed many of them thrown upon the shore in the South of Devonshire, in the Summer of 1808, and adds, that he had taken two or three since. The fishermen, he observes, called it White-Bait. It has, however, so much the character of the fry of some larger species, that it cannot be viewed without doubt. Had it not been said to possess but three cirri, I should have thought it the same as Mr. Couch's Mackerel Midge. Montagu appears to be quite certain that it is not the young of the Motella tricirrata.
* Hist. Pise. p. 121.
†See Linn. Trans, vol. xiv. p. 73.