2. GLATJCONIA. 61 



** Diameter of body 60 to 90 times in the total length ; 

 rostral not extending to the level of the posterior 

 border of the eyes. 



t Nasal semidivided. 



First labial not one fourth tlie size of the 



second 12. cairi, p. 65. 



First labial nearly half the size of the second. 13, Jitzinf/eri, p. 66. 



ft Nasal completely divided into two. 



Rostral nearly twice as broad as the nasal. 14. hlanfordii, p. 66, 

 Rostral but little broader than the nasal . . 15. longicauda, p. 66. 



*** Diameter of body 47 to 80 times in the total length ; 

 rostral extending to the level of the posterior 

 border of the eyes. 



Rostral not twice the width of the nasal . . ' 18, conjuncta, p, 67. 

 Rostral, at least twice the width of the nasal, 19. scutifrons, 'p. 68. 



B. Ocular bordering the lip, separated from the lower part of the 



nasal by two labials, 



1. Supraocular large, as broad as the shields following, 



20. sioidevaUii, p, 68. 



2. Supraocular small. 



Second labial small, not larger than first . . 21. hicolor, p. 69. 

 Second labial larger than first, not reaching 



the eye 22. macrolepis, p. 69. 



Second labial larger than first, reaching the 



eye 23. myojnca, p. 69. 



C. Ocular not reaching the lip. 



Three upper labials, second largest .* 24. dissimilis, p. 70. 



Four upper labials, fourth largest 25. bilineata, p. 70. 



II. No supraocular, the ocular being separated from its fellow, on 

 the top of the head, by a single shield. 



First labial reaching the eye 2G. humilis, p. 70. 



First labial not reaching the eye 27. septemstriata, p. 71. 



1. Glaucoma macrorhyTichus, 



Stenostoma niacrorhynchum, Jmi, Arch. Zool. Anat. Phys. i. 1862, 

 p. 190, and Icon. Gen. p. 39, 1. 1, pis. v. & vi, fig. 12 (1864), 



Glaucouia macrorhynchus, Bouleng. Ann. 8f Mag. N. H. (6) vi. 1890, 

 p. 92, 



Snout prominent, hooked, the prseoral portion concave inferiorly ; 

 supraocular present, small ; rostral extending to the level of the 

 eyes ; nasal completely divided : ocular bordering the lip, between 



