BIRDS OF KANSAS. 507 



lined with downy feathers. Eggs usually four or five, . 76 x . 52 ; 

 pure transparent white; in form, ovate or pointed oval. A set 

 of four eggs, taken June 14th, 1883, at Pewaukee, Wisconsin, 

 from a cigar box nailed to the side of an outbuilding, are, in di- 

 mensions: . 74 x . 54, . 76 x . 51, . 78 x . 52, . 79 x . 50. 



GENUS CLIVICOLA FOKSTEE. 



"Bill small; nostrils lateral, overhung by a straight-edged membrane. Tar- 

 sus about equal to middle toe without claw; feathered at upper end, especially 

 on inner face, and having also a small tuft of feathers attached to posterior 

 edge near the hind toe. Middle toe with basal joint adherent externally to 

 near the end, half way internally, the claws comparatively little curved, the 

 lateral reaching beyond the base of the middle. Tail slightly forked. Color, 

 dull lustreless brown above; in riparia, white beneath, with gray pectoral 

 bands." 



Clivicola riparia (LINN.). 



BANK SWALLOW. 

 PLATE XXX. 



Summer resident; abundant in suitable locations. Arrive in 

 April; begin laying the middle to last of May; the bulk leave 

 in August, not later than the first of September. 



B. 229. R. 157. C. 163. G. 79, 257. U. 616. 



HABITAT. Northern hemisphere in general; in America, south 

 to Brazil, and throughout the West Indies; breeding chiefly in 

 the United States and northward into the Arctic regions; win- 

 ters from about the southern borders of the United States south- 

 ward. 



SP. CHAK. "Adult: Above, grayish brown, somewhat fuliginous, with a tend- 

 ency to paler margins of the feathers. Beneath, pure white, with a band across 

 the breast, and the sides of the body like the back. Young birds have less 

 einargiuate tails, and the feathers of back, rump and wings edged with whitish." 



Stretch of 

 Length. wing. Wing, Tail. Tarsus. Bill. 



Male 5.25 10.60 3.95 2.00 .45 .25 



Female .... 5.00 10.25 3.80 1.90 .45 .25 



Iris dark brown; bill and claws black; legs and and feet dark 

 brown. 



The range of this species is almost unlimited, extending in 

 America as stated above, and from northern Asia and Europe, 

 south into Africa. They do not, like most of their congeners, 



