CORACIAD^. 59 



mild, it remains about that part of the country during the whole year. 

 Mr. Jackson has sent it from Nel's Poort. He alse states that it stays 

 with him all the year round. 



92. Cotyle Ambrosiacus. (L.) Cypseius Am- 



brosiacus, Gmel. ; Hirundo Riparia Senegalensis, 

 Briss ; Hirundo Amhrosiaca, L., PI. Col. 460, f. 2 ; 

 C. Parvus, Licht., Hart., Orn., W. Af. 



General colour grey-brown ; head and wings darker ; throat 

 whitish ; under part lightish ; tail furcated, outer feathers 

 elongated. Length, 6" ; wing, 4" 10'". 



This little swallow may be at once distinguished from all our other 

 species by its very lengthened tail. It is said by Temminck to be 

 found at the Cape of Good Hope ; but it has not yet fallen under my 

 notice. 



The Third Family, CORACIADiE, or 

 Rollers, 



have the bill more or less lengthened, and broad at the base, 

 with the sides compressed towards the tip, which is hooked ; 

 the nostrils basal, lateral, with the opening linear or oval ; 

 the wings long and pointed ; the tail generally short and even ; 

 the tarsi short ; the toes moderate, sometimes free, or the 

 outer toe united at the base with the middle one. 



The Sub-Family, CORACIANiE, or Rollers, 



have the bill moderate, higher than broad at the base, the 

 sides much compressed towards the tip, which overhangs the 

 lower mandible ; the nostrils basal, lateral, linear, and oblique ; 

 the wings moderate ; tail moderate, and the side-feathers 

 sometimes lengthened ; the tarsi short ; the toes moderate, 

 and free at the base. 



Genus CORA CIAS, Linn. 



Bill long, straight, more elevated at the base than broad, 

 the sides much compressed, and the tip bent over that of the 

 lower mandible ; the nostrils basal, linear, oblique, and 

 partly covered by a feathered membrane ; wings moderate 

 and pointed, with the second and third quills the longest ; 

 tail long and rounded, with the lateral feathers sometimes 

 lengthened ; tarsi much shorter than the middle toe ; toes 

 moderate, free at the base, with the outer toe nearly as long 

 as the middle one ; the hind toe long, the claws moderate, 

 curved, and acute. 



