172 COLIUS, COLYMBUS. 
2—2. Cotivs. Spec. 1. 
capensis, (coly,) exterior tail-feathers white out- 
side ; body cinereous whitish beneath. 
See MS. P. 
3—3. CoLuser. Spec. 176. 
vipera, (egyptian viper,) subferruginous, spotted 
with brown ; beneath whitish ; tail short, mu- 
cronate. About sixteen inches long. Supposed 
to be the.asp of Cleopatra. 
constrictor, (black snake,) shining black, body 
long and slender; abdominal scales 186, cau- 
dal 92. 
Remark. Most of our snakes are of this genus. 
See MS. P. 
2—4, CoLumBa. Spec. 82. 
migratoria, (common pidgeon,) orbits naked, san- 
guineous ; body cinereous ; breast rusty red. 
caroliniensis, (mourning dove,) body reddish-cine- 
reous, reddish beneath ; orbits blue. 
canadensis, (american turtle-dove,) body greyish- 
brown, whitish beneath ; primary quill-feathers 
yellowish at the tip; tail feathers white at the 
apex. 12 or 13 inches long. 
See MS. P. 
2—6. Co.iymbus. Spec. 25. 
gtacialis, (loon, speckled diver,) head and neck 
violaceous black ; a white interrupted band on 
the chin and upper part of the neck. Some- 
times three feet long. 
eristatus, (grebe,) fuscous, white beneath ; head 
rufous ; collar black ; secondary quill-feathers 
white. About 23 inches long. ne 
See MS. P. 
