XXX11. SYNOPSIS. 



I,, marinus, Linn. - v. 2, p. 196-198 



L. fuscus, Linn. v. 2, p. 199 



I,, eburneus, Linn. - - v. 2, p. 201 



L. canus, Linn. v. 2, p. 203 



L. tridactylus, Z#M. - - v. 2, p. 205-207 



L. Atricilla, Linn. 



L. ridibundus, Linn. - - v. 2, p. 209-212 



L. Sabini, Sabine. 



L. minutus, 7W/. - - v. 2, p. 213 



(r<?. <?o. -LESTRIS. Bill moderate, strong, hard, round- 

 ed above, compressed and bent towards the tip; the base of 

 the upper mandible covered with a cere; under mandible 

 with a prominent angle beneath: nostrils placed far for- 

 wards, diagonal, straight, closed behind, pervious: tibia 

 naked above the heel; tarsi rather long: hind toe very small, 

 the three anterior entirely palmated; claws large and much 

 hooked: tail slightly rounded; the two middle feathers 

 longest: wings moderate; first quill longest. 



L. Cataractes, Temm. - v. 2, p. 216 



L. pomarinus, Temm. 



L. Richardsonii, Swaths on. - - v. 2, p. 219-221 



L. parasiticus, Temm. 



Gen. 81. PROCELLARIA. Bill robust, much hooked, 

 suddenly inflated towards the tip; under mandible truncated 

 at the tip, with a prominent angle beneath: nostrils con- 

 tained in a tube extending along the ridge of the bill: tarsi 

 moderate, compressed ; three toes before, entirely palmated ; 

 a sharp simple claw in place of the hind toe : tail rounded : 

 wings long; first quill longest. 



P. glacialis, Linn. - v. 2, p. 225 



Gen. 82. PUFFINUS. Bill longer than the head, slen- 

 der, compressed at the point; lower mandible deflected at 

 the tip: nostrils in a double tube extending along the upper 

 surface of the bill: tarsi moderate, compressed; toes three 

 in front, rather long, entirely webbed; hind toe rudimentary, 

 wings long, acuminated; first quill feather longest. 



