34 



Distance from extremity of snout t(f eye's an- 

 terior margin I mm. 



Eye's diameter 



1 



22. L. fuliginosus n. sp. 



PI. III. i. 6 and 7. 



The body is compressed, rather short and high; 

 its greatest height, contained in its length about se- 

 ven times, is situated at a point distant about two 

 thirds of the total length from the front end. From 

 this point towards the head the height diminishes 

 slowly, towards the tail hardly at all. 



The head is of moderate size; its length is con- 

 tained not quite three times in the greatest height of 

 the body. Its upper profile is strongly convex and 

 in the form of a regular arch. The snout is blunt. 

 The distance from the snout-extremity to the ante- 

 rior margin of the eye is about the same as the lat- 

 ter's diameter. The eye has a circular contour; its 

 upper margin does not reach up to the upper profile 

 of the head. The posterior nostril lies close up to the 

 anterior margin of the eye a little above the middle 

 of it and is rounded. The anterior is not far from 

 the end of the snout and is of a suboval form; it is 

 parallel to the upper profile; the nostrils are twice 

 as far apart as the distance between the anterior one 

 and the extremity of the snout. The cleft of the 

 mouth is horizontal reaching further back than the 

 middle of the eye's lower margin. The lower jaw is 

 a trifle shorter than the upper; its under profile is 



