FRIGATE PIIION. 253 



the eye is a dusky patch ; and on the breast a band 

 of the same colour : the greater quills are darker than 

 the others, and have the inner webs of some of them 

 nearly white : the wings have a similar mark, ex- 

 tending across from the tip of one to the tip of the 

 other, as in the last species ; and they are, when 

 closed, somewhat longer than the tail, which is nearly 

 the colour of the back, with its outer feathers white, 

 the next white on its inner web, and the next tipped 

 with white : the legs are blue ; the webs pale. 



Fly in flocks in the Southern Ocean, from 47 to 

 58 degrees of latitude. 



FRIGATE PRION. 



(Pachyptila marina,) 



Pa. durso tectricibus alarum juscis, vertice cerviceque ccerulescente- 



cinereis, uropygio ccerulescente, genis corporeque toto subtus 



albis. 

 Prion with the back and wing-coverts brown, the crown and 



cervix bluish-ash, the rump bluish, the cheeks and entire body 



beneath white. 

 Procellaria marina. Lath. Ind. Orn. 2. 826. 

 Frigate Petrel. Lath. Gen. Syn. 6. 410. Lath. Gen. Hist. x. 



189. 



Length eight inches and a half: beak slender, 

 and but little hooked : the tip of the head and hind 

 part of the neck, as far as the shoulders, bluish-ash 

 colour : the back and wing-coverts brown : the rump 



