SNAKES. 13 
i. The Arropos. Atropos acontia, Gray, Zool. Misc. 49. 
Atropos puniceus, Wagler, Amph. 175. Trigonocephalus puniceus, 
Reinw. Isis, 1827,561. Schlegel, Phys. Serp. 545, t. 19, f. 10, 11. 
Abbild. 118, ¢. 38, animal and skull. Coluber acontia, Gmelin, S. 
N. 1093. Echidna acuntia, Merrem, Tent.151. Seba, ii. 64, f. 1. 
Red-brown, minutely black dotted; paler beneath; tail gene- 
rally darker; temple with a dark-edged, narrow white streak from 
back of eyes. 
a. In spirits. Java. From Mus. Leyden. 
b. In spirits. Young. Borneo. From Mr. Lowe's collection. 
b. End of tail with four rows of scales beneath. America. 
Lachesina. 
6. LAacHEsISs. 
Head ovate, crown scaly: scales keeled ; subcaudal plates two 
rowed, and with four rows of scales under the tip, ending in a spine. 
Lachesis, Daud. Wagler, Syst. Amph.175. Gray, Zool. Misc. 
50. Bothrops sp., Wagler, Serp. Braz. Craspedocephalus, Gray, 
Ann. Phil. 1825, 205. 
1. The Curucucv. Lachesis mutus, Daud. Rept.v.351. Gray, 
Zool, Misc.50. L.rhombeta, Fitz. N. Class.63. Neuw. Abbild. i. t. 5. 
Bothrops Curucucu, Wagler, Serp. Braz. t.23 (bad). Crotalus mutus, 
Linn. S. N. 273. Seba, Thes. ii. t. 76, f. 1, t.91, 92. Schlegel, 
P. S. 570, ¢. 20, f.19, 20. Boa muta (Le muet), Lacep. 2 a, ii. 
389. B. crotalina, Shaw, Z. iii. 352. Cophias crotalina, Merrem, 
Tent. 154. Scytale catenatus, Laur. ili. 162. S. Ammodytes, Lair. 
iii. 162. Seba, ii. t. 76, f. 1. Coluber alecto, Shaw, Zool. iii. 400. 
Trigonocephalus rhombifer, Cuv. R. A. ii. 90. Crasp. Crotalinus, 
Gray, Ann. Phil. 1825, 205. 
Pale brown ; back with oblique black cross-band. 
a. Adult. In spirits. S. America. Demerara? Presented by 
Colonel Edward Sabine, R.E. 
b—d. Adult. In spirits. Mexico. From Mr. Hugo Finch’s col- 
lection. 
e. Adult. Stuffed. Brazils. Presented by Mrs. Parker. 
2. The Peruvian Curvucucu. Lachesis pictus, Tschudi, Rept. 
Consp. 166. 
Gray-brown, with violet-black, roundish, irregular spots, con- 
fluent on the hinder part of the body ; sides with small white spots ; 
Cc 
