66 the proceedings of the linnean society 



17. — Mabouia irrorata. 



■ 



Of slender elongate form ; head rather short ; supranasal 

 plates distant ; intern asal large, truncate in front, and broadly 

 rounded behind ; fronto-nasals tetragonal, distant ; frontal not 

 much longer than broad, and rounded at the posterior apex. 

 Supraorbitals 4, the second pair nearly contiguous; fronto-parietal 

 single, with a more than usually large interparietal ; the fifth 

 upper labial twice the size of any of the others ; ear openings 

 semioval, no distinct denticulations ; scales in 10 or 12 series on 

 the back, very smooth ; legs long and slight ; toes elongate, 

 unequal, and ringed with white ; colour, pale olive marked with 

 black on the back, black thickly marked with minute white spots 

 on the sides, and silvery white underneath. Total length, 6 

 inches, of which the tail is 4| inches. 



One specimen from Hall Sound. It seems to come near the 

 Scincus atrocostatus Lesson, Voy. Coq. II. 50, t. 4, f. 3. 



18. — Heteropus longipes. 



Nasal plates small and distant ; the internasal forms a broad 

 straight suture with the rostral, and is rounded in the middle of 

 its base, where it joins the frontal ; fronto-nasals large, and 

 nearly contiguous ; fronto-parietal single, with a small rounded 

 interparietal behind. The fifth upper labial is the largest. Ear 

 openings slightly ovate, with acute denticulations ; three in front 

 large, and several above small. Legs, especially the anterior 

 pair, long and weak, the toes elongate and unequal. Scales very 

 indistinctly 3 keeled, those on the back in 8 or 10 series. Colour, 

 olive brown above, with a darker streak on each side, beneath, 

 yellowish white ; central preanal scale large. Tail long and 

 taper. Total length, 6 inches. From the Endeavour River. 



19. — Heteropus variegatds. 



Plates of the head as in the last species; nostril on the 

 hinder part of the nasal plate. Ear openings oval, with a strong 

 denticulation in front, and one or two minute ones on each side 

 of it. Legs stronger and shorter than in the last species, the 

 toes much shorter. Tail, long and taper. Scales indistinctly 



