54 Annals of the South African Museum. 



TESSELDATA, Eich. 



Teeth in a single row, triangular and slanting backwards, large 

 ones interspersed with smaller; 2 strong pointed teeth pointing 

 backwards at symphysis of upper jaw. Length of head 41 times in 

 distance from snout to vent ; tail 1^ times length of trunk. Snout 

 compressed and rounded ; eyes situated midway between angle 

 of mouth and end of snout, diameter equals length of snout ; 

 cleft of mouth 25 times in length of head. Profile of head 

 boldly convex to eyes ; gill-opening equals diameter of eye ; 

 anterior nasal tubes equal | diameter of eye ; mouth can be shut 

 completely. 



Colour (of preserved specimen), body, fins, and head covered with 

 irregular black blotches, with many round spots in a more or less 

 irregular row on body ; interspaces light. 



One specimen, about 380 mm. in length, from Mr. Eomer 

 Robinson, Natal. 



POLYZONA, Rich. 



(Banded Eel.) 



Teeth, biserial on lower jaw, molar-like and slightly pointed at 

 anterior end of mandible, a row of rather pointed teeth on maxillary 

 with a few smaller teeth on the outside ; a band of 4 longitudinal 

 rows of molar-like rounded teeth on vomer. Length of head 3 to 

 3 times in distance from point of snout to vent ; tail 1 i- times 

 length of trunk ; eyes situated in upper half of head, 1?- to 

 2 diameters from end of snout and situated nearer to point of snout 

 than to angle of mouth ; cleft of mouth 2^ to 2i times in length of 

 head. Profile of head boldly convex to the eyes, slightly convex 

 thence to point of snout, which is slightly longer than the lower 

 jaw ; gill-opening equals diameter of eye ; anterior nasal tube 

 f diameter of eye. 



Dorsal well developed, commences in advance of gill-opening. 



Colour (of preserved specimens), yellowish brown, darker above 

 than below, crossed by about 28 irregular narrow white or yellow 

 transverse bands, which extend through dorsal and anal fins and 

 across caudal. 



Two specimens, 374 mm. and 518 mm. in length respectively, 

 from Mr. Romer Robinson, Natal. 



