208 MR. W. THOMPSON ON A NEW SUB-GENUS OF FISHES. 
differs from my fish, which has four large hooked teeth in the upper, and two in the 
under jaw. 
The specimen under consideration was found dead on the beach at Carnlough near 
Glenarm, in the county of Antrim, by my friend Dr. J. L. Drummond, when collecting 
Alge there in the month of June 1836, and, along with some other fishes, &c. obtained 
about the same time, was kindly handed over to me on his return to Belfast. Dr. 
Drummond informs me, that from its appearance when found, it had most probably been 
cast ashore by the tide of the preceding night when a strong easterly wind prevailed. 
Genus EcHIopon. 
Corpus valdé elongatum, complanatum et lanceolatum. 
Caput ovale ; rostrum mediocritér productum ; os sub-obliqué fissum ; mazille denti- 
bus armate sicut ossa palatina vomerque ; dentes duo utrinque apud maxillie 
superioris apicem magni et prelongi; macilla inferior utrinque dente unico cylin- 
draceo terminata ; apertura branchialis magna ; operculum satis amplum. 
Pinne dorsales et anales valdé producte. 
Anus anteriora versus positus. 
Ecuropon DrummMonpil. 
Tas. XXXVIII. 
Ech. corpus leve ; mazille ambe, vomer, ossaque palatina dentibus parvis obtusiusculis 
dense armate ; maxilla superior longior, cujus dentes externi ore clauso conspicui ; 
vomer admodum prominens antrorsumque valde productus ; lingua brevissima ; pinne 
dorsales analesque cum caudali continue, et posticé corpore multo altiores ; pinna analis 
ante dorsalem exoriens ; radii pinnales nulli ramosi ; membrana branchiostega septem 
radiata. 
Total length 11 inches; greatest depth (at 1 inch 4 lines from the snout) 6 lines, 
thence posteriorly gradually narrowing ; greatest breadth of body anteriorly 3 lines ; at 
the middle of the entire length 1 line, and thence to the tail becoming gradually more 
compressed. 
Head 1 inch 2 lines long, or rather more than one-ninth of the entire length ; pro- 
file sloping forward equally on both sides to the snout, which is truncated, and projects 
1 line beyond the lower jaw; narrow, increasing in breadth very gradually from the 
snout, its breadth as 1 to 33 of its length; height half its length, compressed at the 
sides, and rather flat above from the eyes backward; from the eyes forward a central 
bony ridge ; snout viewed from above somewhat bifid in consequence of the forward 
position of the large teeth on each side. A few large punctures extend from the snout 
below the eye, and are continued just behind it ; a series of small ones closely arranged 
extend from the upper portion of the eye in a curved form posteriorly to near the edge 
of the pre-opercle, and thence a double row extends downwards. Nostrils very large, 
i i a 
