APPENDIX. 419 



carinated ridges on the sides of the tail are exactly the same as those of D. 

 occidentalis. The points of the pectoral fins are perfect, and they only reach 

 to within half an inch of the base of the caudal fin, whereas, in nrientalis, 

 the tips of these rays extend almost, if not quite, to the end of the caudal 

 rays. The colours of the skin of course had faded, but there was no ap- 

 pearance on the head or body either of bonds or spots ; the sides and belly 

 were silvery ; the tins blackish, with jiale spots ; and the back browTi. That 

 this species is not that figured and minutely described by Russell, may be 

 be inferred from three circumstances, first, that the bony crown is not, as 

 in that, "divided by engraved lines into compartments of divers forms, but 

 chiefly lozenge, " for there are no perceptible divisions at all ; secondly, 

 because it has, like or/ewte/w, a distinct ray, instead of an "oval formed 

 prickle pointing backwards *," just before the first dorsal fin ; and thirdly, 

 because the anal fin lias not ramose rays but simple ones. With Dr. Rus- 

 sell's species, however, it agrees in the length of the pectorals, and in the 

 sub-orbital bone having, as in that, " the margin serrated;" apart which, 

 as we have already observed, Cuvier says is smooth in his orientalis. 



TRIGLA Swainsonii. Leach. Swainsonian Gurnard. 



Pectorals considerably beyond the base of the anal fin ; 

 first dorsal spine smooth ; orbits with two spines 

 before and one behind the eye; lower ray of the 

 pectoral partly detached ; caudal unequally lunate. 



Dorsal 9, 15; pectoral 10; anal 15 ; vent — ? caudal — ? 

 Inhabits the western coasts of Sicily. 



Upon sending specimens of this new species to my late re- 

 gretted friend Dr. Leach, and pointing out its distinctions, he 

 did me the honour of giving it the above name, under which 

 it is still preserved in the British Museum. So far as I can 

 discover, it has been overlooked, both before and since, under 

 the designation of Trigla Hirundo of Linn^us, a name 

 hitherto given to all those European Gurnards having very 

 large pectorals. 



As it is my intention to enter more into the details of this 

 genus on a future occasion, I shall merely at present state 

 such particulars as I can furnish of the Mediterranean species, 

 together with the distinctions of others, by which, as I con- 

 ceive, their respective differences may be determined. Of the 

 true Hirundo of Linnaeus, I know nothing at present : it has 

 been distinctly and repeatedly described as having a spinous 

 lateral line ; it therefore seems to me altogether objectionable, 

 to apply this name to other species having this part smooth, 

 under the gratuitous supposition that Artedi, Linneeus, &c, 

 are in error. The Trigla Hirundo of Cuvier obviously includes 

 two species at least f, one, that of Bloch's, having short pec- 



* See Russell, ii. p. 240. 

 t There are also incidental notices which refer to others. 



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