14 



PROCEEDINGS OF THE ACADEMY OF 



[Feb., 



ellipsoid, without eyelid or skin of head extending over entirely, 

 centre about first f in head. Mouth small, commissure but slightly 

 curved, rictus extends well behind eye. Lips rather broad, especially 

 upper, fleshy, entire. Teeth all molar-like or rounded, upper 

 lateral series distinct from vomerine or premaxillary, rather irregu- 

 larly uniserial, begins about midway in snout length and continues 

 back till opposite hind eye edge. Premaxillary and vomerine teeth 

 continuous, former a little large and exposed below in front of closed 

 mandible tip, and latter like lateral upper jaw teeth, though con- 

 tinued a little further posteriorly. Mandibular teeth irregularly 

 biserial, anterior a little enlarged, not continuous across symphysis, 

 and extend well back towards rictus. Tongue not evident. Man- 



m a 



Fig. 3. — Chlevastes daps Fowler. Type. 



dible strong, shallow, symphysis obtuse. Anterior nostril in fleshy 

 tube, before mandible tip, on upper lip. Posterior nostril large 

 pore, with outer cutaneous edge opening downward below lower 

 eye front. Interorbital evenly convex. 



Gill-opening small, inferior, inclined back moderately. 



Skin rather thin, smooth. Head with number of fine longitudinal 

 wrinkles, though these mostly on pharynx. Some pores on mandible 

 and lower side of head, these inconspicuous. 



Dorsal origin nearer snout tip than gill-opening by space equal 



