REPORT ON THE SHORE FISHES. 13 



Otolithiis guatucupa, C. V. Station 321 ; 13 fathoms. 



Micropogon ornatus, n. sp. (PI. VII. fig. A). 



D. 9/^, A. I, L. lat. 63. The height of the body is one-third of the total length 

 (without caudal), the lengtli of tlie head one-fourth. Dorsal profile very concave on 

 the nock. Diameter of the eye two-thirds of the length of the snout, two-elevenths 

 of that of the head, and rather more than one-half of the width of the interorbital 

 space. A sei-ies of small barbels from the interoperculum to the lower lip, where they 

 are most crowded. Prteoperculum without spines at the angle. Dorsal and anal spines 

 very feeble. Pectoral as long as the head. There are eight or nine scales in a transverse 

 series between the first dorsal and the lateral line. A large, round, black spot at the 

 origin of the lateral line. Body with six alternately broad and narrow blackish cross- 

 bands. Pectoral blackish along the middle. Length of specimen, 8f inches. Mouth of 

 the Eio de la Plata. Station 321 ; 13 fathoms. 



Micropogon undulatus, L., Monte Video. 



Percophls brasilianus, Q. and G. Station 322 ; 21 fathoms. 



Prionotus inmctatus', Bl. Station 322; 21 fathoms. 



Lcemonema longifiUs, n. sp. (PL VII. fig. B). 



D. 5%, A. 45. Head, and particularly the snout, depressed ; the latter with the upper 

 jaw much projecting, not quite twice as long as the eye, the diameter of which is nearly 

 one-sixth of the length of the head. The head is one-fourth of the total length (with- 

 out caudal). Cleft of the mouth rather wide, the maxillary not quite extending to 

 the hind margin of the eye. Teeth of the jaws in villiform bands ; vomer, wdth two 

 groups of teeth, separated in the middle by a toothless interspace. Barbel about as long- 

 as the eye. Interorbital space wider than the eye. Operculum without spine. Scales 

 very small. Fins naked. The first dorsal commences above the root of the pectoral, and 

 is narrow and high, the third ray being prolonged into a long filament. The second 

 dorsal rather high, l)ut lower than the body. Caudal rounded. Pectoral nearly as long 

 as the head, without snout. Ventral reduced to a bifid filament, the lower ray being 

 much longer than the upper, almost half as long as the body. Body brownish ; the 

 dorsal filament, the outer margins of the vertical fins, and the long ventral filament 

 black. Length of specimen, 7^ inches. Mouth of the Rio de la Plata. Station 32] ; 

 13 fathoms. 



Ajyhoinstia ornata, Lac. Station 321. 

 Arius commersoni, Lac, Monte Video. 

 Engraitlis olida, Gthr. Station 321. 



