SYNOPSIS. xvii. 



H. rustica, Linn. v. i, p. 299 



H. urbica, Linn. v. i, p. 305 



H. riparia, Linn. . v. i, p. 307 

 H. purpurea, WiL 



Gen. 40. CYPSELUS. Bill very short, triangular, de- 

 pressed at the base ; upper mandible bent at the point ; gape 

 extending beyond the eyes: nostrils longitudinal, placed 

 near the ridge of the bill; the edges raised and furnished 

 with small feathers: tarsi very short; toes four, all directed 

 forwards, entirely divided; claws short and thick: wings 

 very long; first quill a little shorter than the second: tail 

 forked, composed of ten feathers. 



C. alpinus, Temm. 



C. murarius, Temm. v. i, p. 308 



Gen. 47. CAPRIMULGUS. Bill very short, flexible, 

 much depressed at the base, slightly bent at the point, and 

 furnished at the margins with strong hairs directed forwards : 

 nostrils basal, large, partly closed by a membrane, and 

 partly covered by the feathers of the forehead: tarsi very 

 short; three toes before, and one behind; the anterior toes 

 connected by a membrane as far as the first joint; hind toe 

 reversible; claws short, except that of the middle toe, which 

 is long and pectinated on the inner edge : wings long ; first 

 quill shorter than the second, which is longest: tail rounded 

 or forked, composed of ten feathers. 



C. Europaeus, Linn. - - - v. i, p. 311 



ORDER IX. COLUMB^E. 



BILL moderate, compressed; base of the upper 

 mandible covered with skin in which the nostrils 

 are placed, tip more or less curved: three toes 

 before, entirely divided; one toe behind. 



VOL I. C 



