ME. I\ DAT ON SOME BRITISH FISHES. 311 



Orcynus (or Thynnus) Irachypterus is unquestionably the im- 

 mature of 0. thynnus, the Common Tunny. 



Tarrell, edition 2, vol. i. p. 160, has a figure of Anxis vulgaris ; 

 the same woodcut reappears in edition 3, vol. ii. as Thynnus 

 Irachypterus, with which species it is not related. In the second 

 edition, as a vignette, at p. 159, is shown & Pelamys sarda, having 

 only transverse bands ; in the next edition the same figure 

 appears as Auxis vulgaris, while a new figure of Pelamys sarda 

 is added, showing only the oblique, and not the transverse bands. 



Couch equally is in error respecting his figures of these fish, as 

 in volume ii. p. 102, plate Ixxxv., we find the pelamid Pelamys 

 sarda showing merely oblique, but not transverse, bands ; while 

 in volume iv. p. 425, plate lxxxii.*, is the same species figured, 

 showing transverse, but not oblique, bands, and named " Short- 

 finned Tunny," Thynnus irachypterus. Consequently it does not 

 appear that Couch ever received an example of the true Thynnus 

 Irachypterus, all the fish thus named by him being specimens of 

 Pelamys sarda. 



For the next few species I am chiefly indebted to Mr. Carrington, 

 E.L.S., Naturalist to the Eoyal Westminster Aquarium. Some 

 were obtained in the Channel Islands by his assistant Mr. Edward 

 Matthews, others by Dr. Murie and Mr. Greorge Brook, E.L.S., 

 to all of which gentlemen my thanks are due. 



Lipaeis Montagui, Donovan. 



Some very fine examples, up to 3'6 inches in length, were taken 

 at the mouth of the Thames. The largest had D. 30, A. 24, and 

 a very distinct membrane connecting the last ray of the dorsal 

 and anal fins with the upper and lower edges of the caudal, while 

 the pectoral was deeply notched. Ventral disk oval, not quite 

 half as long as the head. The greatest depth of the body thrice 

 and one fourth in the entire length of the fish, and the length of 

 the head slightly less. The teeth rasp-like. Colours of a dull 

 grey, covered with small black spots, which on the fins, especially 

 the caudal, become almost bands. 



Lepadogaster Decandolii, Bisso. 



A beautiful example, 3 inches in length, was taken from under 

 a stone in a rock-pool at low-water at Jersey by Mr. Matthews, 

 while searching for crabs. Of a beautiful red colour, its head 



