SULID^. ^-Jli 



Family II. SULID.E. 



Palatines fused in the middle line, with a slight median keel ; a 

 well-marked nasal hinge ; postorbital process emarginate. Greater 

 part of the carina sterni and the region of the sternum bearing the 

 coracoid grooves produced far forward beyond the anterior lateral 

 process of sternum ( W. P. Pi/craft). 



1. SULA* 



Sula, Brisson, Orn. vi. p. 494 (^1760) ; Lacepede in Buf. ^^^' 



Hist. Nat. (ISino, Didot), Quadr. xiv. p. 318 (1799) " S sula 



Dysporus, IlUf/er, Prodrotnus, p. 279 (1811) S. bassaua 



Plaucus, Rannesque, Analyse, p. 69 (1815) ; Reichenb Av 



Syst. Nat. p. vi (IQbO) ' g bassaua 



Sulanus, Rqfinesqiie, Analyse, p. 72 (1815) '. S sula 



Moris, Leach, Syst. Cat. Mamm. ^- B. Brit. Mm. p.'ss 



^ ^^^^%-: :••;;•••.••••, S. bassaua. 



Morus, VieiU. N. Diet. d'Hist. Nat. xii. p. 35 (1817) . S sula 



Disporus, Ayassiz, Index Univers. p. 127 (1846) .... S bassaua 



Piscatrix, Reichenb. Av. Syst. Nat. p. vi (1850) S piscator 



Abeltera, Heine, in Heine ^ Reichen. Nomencl Mas ■ 



Hein. p. 351 (1890) ' g. sula. 



Bill stout, subcylindrical, and pointed, tapering gradually towards 

 the extremity, which is very slightly curved but never hooked ; 

 a linear groove on each side of the culmen ; nostrils completely 

 closed in adults ; cutting-edges of mandibles serrated, that of the 

 upper mandible deeply cleft at the junction of the maxilla with the 

 quadrato-jugal bar; chin and upper part of throat more or less 

 naked. Wings very long and pointed, the first primary longest. 

 Tail long and wedge-shaped, composed of from twelve to eighteen 

 feathers. Tarsus short ; outer and middle toes subequal ; claws 

 curved, that of middle toe broad and pectinate. 



Range. Temperate and Tropical seas. 



The following papers refer to the osteology, etc., of the genus :-Owen & 



St P. ersb (b V, pt li. pp. 104, 139. 181, pi. vi. (1839) [osteology of S. sula]' 

 NUzsch, Pteryl., En^l ed p. 150, pi. x. figs. 8, 9 (18b7); Eytou. Osteol. aI] 

 p. 220 pL bL (18b7); Mivart, Tr. Z. S. x. pt. vii. pp. 31.5-378. pis. lix 

 ^"4. ;,flf7;^"i^^^'*^^ ^•■'™^ skeleton]; Shufeldt, P. U.S. Nat. Mas. x. 

 p. 38- (1887) ; Bignon, C. E. Soc. Biol. 1889, pp. 93-94 [air-cavities in 



