SNAKES. 7o 
27. Hyprops. 
Head small, distinct, rather depressed; frontal plates 3, small ; 
anterior triangular, transverse; vertebral and occipital moderate ; 
superciliary small ; loreal none ; one large anterior and two posterior 
oculars: eye over fourth labial: upper labial plates all simple; 
hinder large, high, the seventh largest and highest: body sub- 
cylindrical ; scales rhombic, broad, smooth, truncated, polished, in 
fifteen series ; ventral shield broad, rounded. 
Hydrops, Wagler, Syst. Amph. 170, 1830. Gray, Zool. Misc. 
67. Fitz. S. R. 25. Elaps sp., Wagler, Serp. Braz. Homalopsis 
sp., Schlegel, Phys. Serp. 
1, The Hyprops. Hydrops Martii, Wagler, Syst. Amph. 170. 
Gray, Zool. Misc. 67. Fitz. S. R. 25. Hydrops triangularis, 
Wagler, Syst. Amph. 170. Homalopsis Martii, Schlegel, 356, t. 13, 
f. 19, 20. Elaps Martii and E. triangularis, Wagler, Serp. Braz. 
t. 2, f.2,t.2a, f. 2, junior. ? Coluber Nicandri, Merrem, Tent. 
97, from Seba, ii. t. 64, f. 2. 
Scales in 15 series, truncated: blackish; body and tail with 
numerous red-brown rings. 
Inhab. Brazil. Mus. Leyden. 
28. Hycina. 
Body elongate, slender, subcylindrical; scales broad, rhombic, 
smooth: ventral shields rather narrow, regularly rounded: head 
small; crown rather depressed, shielded; one anterior large and 
two posterior smaller ocular shields, lower hinder partly under the 
eyes ; hinder labial plates large, seventh largest ; loreal shield none: 
eyes small, over the fourth labial: anterior frontals 3; front one 
transverse, triangular: tail elongate, tapering; subcaudal plates 
two-rowed. America. 
Hygina, Gray, Zool. Mise. 67, 1842. 
1. The Hycina. Hygina fasciata, Gray, Zool. Misc. 67. 
Blackish brown, with subalternating white cross-bands on the 
sides and beneath. 
a, b. In spirits. Demerara. Presented by Lieut. Friend, R.N. 
c—f. In spirits. Demerara, 
