43 



27. L. tiluroides n. sp. 



PI. V. f. 3 — 5. 



The body is compressed, very much elongated, 

 low; its greatest height, contained about twenty-three 

 times in its length is situated in front of the middle; 

 the height decreases thence but little towards the 

 head, considerably on the contrary in the other di- 

 rection, the body tapering here to a filament. 



The head is small; its length is equal to the 

 greatest height of the body. Its upper profile makes 

 a concavity in front of the eye, the sno.ut being there- 

 by depressed from the convex hinder part of the 

 head. The snout is pointed. The distance from its 

 extremity to the anterior margin of the eye is twice 

 and a half as large as the diameter of the latter. 

 The eye has an almost circular contour ; its upper 

 margin does not reach up to the upper profile of the 

 head. The posterior nostril is immediately in front 

 of the anterior margin of the eye above its middle 

 point. The anterior is at a distance from the posterior 

 that is the quarter of its distance from the extremity of 

 the snout. The cleft of the mouth tends obliquely upwards 

 reaching back to the middle of the eye's under margin. 

 The lower jaw is a trifle longer than the upper; it 

 has a straight under profile and retreats at a promi- 

 nent angle. Teeth are present in both jaws. 



The fins are extremely rudimentary. 



The vent is situated in the hind part of the body ; 

 its distance from the point of the tail goes about 

 eight times into the body's length. 



