146 SULID^. 



Juv. Brunnea, plumis griseo vel fulvescenti-albo marginatis ; guttnre bmnneo, corpore reliqno subtus albo. 

 (Descr. exempl. juv. ex Ins. Kennadec. llus. Brit.) 



Hab. South Atlantic, South Pacific, and Indian Oceans ; West Indies, and northward 

 to Southern Florida *. — Revillagigedo Is., Socorro I. {Grayson - 3, Anthony % San 

 Benedicte I.'', Clarion I.^ {Anthony). 



Though somewhat similar to S. bassana in general appearance, the Blue-faced 

 Gannet is distinguished by the form of the line of feathering skirting the throat. 



In S. bassana there is a band of bare skin down the centre of the throat, the feathered 

 liaes of which extend forward in a double point between the rami of the mandible as 

 far as the notch of the maxilla, whereas in S. cyanops the line is truncate, with the 

 margin not forked, and falling far short of the notch in the maxilla ®. Thus the chin 

 and entire throat are bare, and appear in the preserved skin as blackish, having been 

 dark blue in life ^. 



Mr. Anthony states that this species was not so common on Socorro Island as it was 

 on San Benedicte^; here he found it breeding, but on Clarion the birds were more 

 abundant still, and the nests were found on the beach and up to the top of the island ^- 



The nesting-habits are similar to those of the other species of the genus, and but a 

 single chalky-white egg is laid. 



3. Snla piscator. 



Pelecanits piscator, Linn. Syst. Nat. i. p. 217 \ 



Sula piscator, Salv. Ibis, 1864, p. 378 " ; 1866, p. 200 ' ; Kidgw. Pr. U. S. Nat. Mas. p. 578 * ; 



Man. N. Amer. Birds, p. 76 ' ; A. O. U. Check-1. N. Amer. Birds, p. 40 ' ; Richm. Pr. 



U. S. jSTat. Mus. xvi. p. 531 '; Ogilvie Grant, Cat. Birds Brit. Mus. xxtI. p. 432 °. 



Alba, tectricibns alarum majoribus et reinigibus nigrieauti-brunneis, cinereo externe adombratis, secnndariis 

 intimis albis ; cauda alba ; corpore reliquo subtus albo, subalaribus qnoque albis, tectricibus subalaribus 

 extemis brunneis, pla^am magnam formantibns : rostro cyanescente, basin versus rubesceute ; pedibus 

 miniatis vel fere coccineis ; gula nuda saturate schistacea vel nigra ; regione nuda orbitaU cyanea ; iride 

 grisea. Long, tota circa 26-0, alas 14-7, caudae 8-2, ctdm. 3*li5, tarsi 1-35. (Descr. feminae adultas ex 

 Half-Moon Cay. Mus. nostr.) 



Juv. Fumoso-bruunea, subtus grisescens ; alb brunneis, tectricibus alarum majoribus remigibusqne conspicue 

 griseo adumbratis : rostro cyanescenti-rubro, basin versus magis coccineo ; regione nuda orbitali plum- 

 bescente ; gula nuda cornea. (Descr. exempl. juv. ex Half-Moon Cay. Mus. nostr.) 



Hab. Tropical and Subtropical Oceans north to Florida ®. — British Honduras, Half- 

 Moon Cay {0. iS'.2 3); Honduras {Dyson^}, Swan I. {Townsend^); Nic.vragu.\, 

 Greytown {Richmond ''). 



S. piscator belongs to the section of the genus Sula in which the feathering of the 

 throat takes a truncate form on the margin of the bare portion of the latter. The 

 adult bird is for the most part white, and the tail-feathers of the same colour, with 

 hoary-grey margins in immature specimens. The young are sooty brown, a little paler 

 on the underparts. 



