60 GLAUCONIID. 
a. Diameter of body more than 100 times in the total length. 
1. macrorhynchus, 
[p. 61. 
b. Diameter of body less than 100 times in the total length. 
Gnoub rounded ....< (045 tens eue d6 DOE Oe 2. distanti, p. 62. 
Snout with angular horizontal edge...... 3. rostrata, p. 62. 
2. Snout not hooked. 
a. First labial reaching, or nearly reaching, the eye. 
Anterior labial broader than the lower 
border of the ocular ................ 4. affinis, p. 62. 
Anterior labial narrower than the lower 
border of the ocular; nasal completely 
divided Wwt6 PHe- oo fake cen atewen 5. albifrons, p. 63. 
Anterior labial narrower than the lower 
border of the ocular; nasal semidivided. 6. goudotii, p. 64. 
b. First labial not reaching the eye. 
a. Supraocular nearly twice as broad as long, followed by 
a single transversely enlarged shield. 
Nasal divided; length of tail 9 times in 
Tat OGRE ODOUR fn ica sy seo nies eee 7. emini, p. 64. 
Nasal semidivided ; length of tail 13 times 
BIE SPIO ARON Ne vie as ph wml sos SR ea 8. signata, p. 64. 
f. Supraocular small. 
* Diameter of body 40 to 57 times in the total 
length; rostral not twice as broad as the nasal, 
not extending to the level of the posterior border 
of the eyes. 
+ First labial smaller than the lower part of the 
nasal ; first median head-shield considerably 
longer than broad .... 9. dimidiata, p. 64. 
++ First labial smaller than the lower part of the 
nasal ; first median head-shield not or but slightly 
longer than broad, 
Length of tail 17 to 20 times in the total 
WORPIA 5 iss s.> + + sous be kaa lie een 10. dulcis, p. 65. 
Length of tail 25 to 30 times in the total 
MONG. 50. 4.s i Re eee eee 16. brevicauda, P- 67. 
Length of tail 8 to 13 times in the total 
length PT er i ee ee _-17. nigricans, p. 67. 
+t First labial as large as the lower part of the 
TASB) o's 9.0.6 cy 11. meget, p. 65, 
