Grayson.] 302 [June 7, 



get on this account. Had we not been so unfortunate in losing 

 our vessel, it was my intention to have visited the rocks and 

 islands adjacent to Socorro, for the purpose of collecting the various 

 species of sea birds and eggs. But this misfortune put an end to 

 further researches in this channel — much, very much indeed, to my 

 regret." 



SULIDiE. 



12. Sula cyanops Sundevall. "Revillagigedo Gannett." 

 "Remarks. Bill pale violet ; iris brown ; bare space at forehead 



and base of the under mandible, purple red ; feet do. ; bare space 

 around the eye, violet blue ; bare space of chin and throat, jet black ; 

 toe nails white ; nostrils indistinct. Contents of stomach, flying fish. 

 The ovarium contained nearly developed eggs ; the sternum I send 

 with the specimen. The plumage of the sexes are about the same, 

 immature birds grey on the upper parts, the color of bill and feet, 

 paler." 



"Inhabits the region about the Revillagigedo Isles, have not met 

 with it elsewhere. Another species, nearly answering to the^ de- 

 scription of Sula bassana, is found in large numbers about the Tres 

 Marias and upon the Island of Isabella ; they breed upon the rocks 

 and on the sand of this little Island, they lay but one egg — white, 

 and nearly the size of a goose egg; both arents assist in in- 

 cubation." 



13. Sula piscator (Linn.). "Booby, or Bobo." 



"Shot near Socorro. A common species in the tropical Pacific. 

 Breeds on the rocks." 



Some species of this genus are very difficult to determine satis- 

 factorily ; the Socorro examples were examined by Prof. Baird, who 

 states that they are probably the species above named, as they agree 

 quite well with the descriptions given of them. 



PELECANID^. 



14. Pelecanus fuscus Linn. "Brown Pelican." 



Among the papers relating to Socorro, I found the description 

 given below of a new lizard, by Prof. E. D. Cope ; on communicating 

 with him concerning it, he replied that no account of it had ever 

 been published, consequently it now appears for the first time. 



