256 



HALODROMA. HALODROME. 



^ Generic Character, 



Rostrum mediocre, compres- 

 sum, rectum, apice adunco ; 

 mandibula superiore utrin- 

 que sulco obsoleto, infe- 

 riore compressa, trun- 

 cate. 



Naves geminatae. 



AlcB elongatae. 



Pedes breves, tridactyli ; tm- 

 giLC pollicis nuUo. 



Beak moderate, compressed, 

 straight, its tip hooked; 

 the upper mandible Avith 

 an obsolete groove on each 

 side, the lower compressed, 

 truncated. 



Nostrils geminated. 



Wings elongated. 



Legs short, three-toed; no 

 hinder claw. 



HALODROMA. lUig. 

 PROCELLARIA. Gmel., Lath. 



This genus was also detached by lUiger from the 

 Procellariae, from which it not only differs as above 

 stated, but also in possessing a dilatable pouch, as in 

 the Cormorants, and in wanting the hinder claw en- 

 tirely, as in the Albatrosses. 



Unlike the rest of the birds of this family, the one 

 comprised in this genus is said to dive admirably. 



