56 THE SNAKES OF SOUTH AFRICA. 
Genus GLAUCONIA. 
A single Genus in South Africa. 
GBS VINO) WNaNe. Sees), 
I. GLAUCONIA NIGRICANS.—Supraocular present. Rostral separated from 
the supraocular by the upper part of the nasal; diameter of 
body 40 to 60 times in total length. 
2. GLAUCONIA CONJUNCTA.—Supraocular present. MRostral in contact 
with the supraocular; Rostral not more than twice the width 
of the nasal, extending to, or slightly beyond a line connecting 
the posterior borders of the eyes. Diameter of body 47 to 60 
times in total length. 
SKULLS OF GLAUCONIA SNAKES. 
Fic. 25.—1. Side view showing the teeth in the lower jaw. There are 
none in the upper jaw. 
2. Skull seen from above. 
3. Skull seen from below showing toothless palate. A. Lower jaw. 
(Brit. Mus. Cat. Snakes.) 
3. GLAUCONIA GRACILIOR.—Differs from the former in having the diameter 
of the body go to 110 times in total length. Body very slender, 
4. GLAUCONIA SCUTIFRONS.—Supraocular present. MRostral, very large, 
at least twice as broad as the nasal and extending beyond a line 
connecting the posterior border of the eyes; diameter of body 
50 to 80 times in total length. Snout rounded. 
5. GLAUCONIA DISTANTI.—Supraocular present. Snout with preoral part 
concave, appearing slightly hooked in profile. 
6, GLAUCONIA LABIALIS.—No supraocular. In all the other species the 
supraocular is present. 
