g. Tlie teeth liaer'ud on all the dentiferous bones except the nasal 



one. 



Genus 12. ECHIOPSIS, Kaup. 



Chiiracterised by a short face, high-placed eyes, short anterior 

 nostril-tube, and deeply-divided jaws. Pectoral moderately short, 

 being half the length of the gape. Nasal teeth 7, of which the 

 tliree middle ones are the longest. Three teeth on the mesial line, 

 Avhich are the longest of all. Two rows, each of 15 teeth, stand 

 on the vomer, the rows ending together. Two rows also of pala- 

 tine teeth, the smallest teeth being in the inner row; there are 18 

 teeth in the outer row, 3 or 4 of which, situated under the eye, are 

 longer than the rest. Two rows likewise on tlie mandible, the 

 outer row being the tallest. 



22. Ecmorsis intertinctus. 



Ophisurus intertinctus. Rich., Ereh. li Terr. p. 10'.i. 

 Opliisurus maculatus, Paris Museum. 



Dorsal commencing the length of the pectoral, behind the tip of 

 that fin. Colour of the head grey, nearly uniform, with very fine black 

 points. On the body, the number of round, black dots is consider- 

 ably greater, and disposed in three or four rows. Long spots exist 

 on the margin of the dorsal ; and the anal is bordered throughout 

 with black. Sir John Richardson describes the young as being 

 dotted on the head, and marked on the body by from 17 to 19 large, 

 round spots, below which there is a series ranged alternately. On 

 the first view no one would believe, from the markings, that the 

 young and old were the same species. 



An example in the French Museum, obtained at Martinique, 

 reaches the length of 28 in., of which the tail forms 15-30 in. 



Genus 13. SCYTALOPHIS, fig. 7. 



Teeth divergent, all nearly of the same size. Pectoral pretty 

 well developed. 



23. SCYTALOPHIS MAGNIOCULIS, fig. 8. 



Ophisurus brasiliensis. Par. Mus. 



Eye twice as large as that of the species which immediately fol- 

 lows (jiarilis). Snout more acute, and the barbels of the anterior 

 tubular nostril shorter. Colour, blackish ; beneath greyish-black, and 

 doited. Dorsal and anal lins yellowish-brown, dotted and bor- 

 dered with black. Whole length, 25'2 in. Length of tail, 17'23 



