CHECK LIST OF NORTH AMERICAN BIRDS. 117 



740. CEdemia perspicillata trowbridgii (Bd.) Coues. b cos. c 5i8a. r — . 



Long-billed Surf Duck. 



741. Erismatura rubida (Wils.) Bp. b eoo. c 5i9. r 634. 



Ruddy Duck. 



742. Nomonyx dominica (L.) Eidg. B 610. c 520. R 635. 



St. Domingo Duck. 



743. Mergus merganser L. b eii. c 521. r 636. 



Merganser ; Goosander. 



744. Mergus serrator L. b 612. c 522. r 637. 



Red-breasted Merganser. 



745. Mergus cucullatus L. b 613. c 523. r 638. 



Hooded Merganser. 



746. Sula bassana (L.) Briss. b 617. c 524. R 650. 



Gannet ; Solan Goose. 



747. Sula leucogastra (Bodd.) Salv. B 6I8. c 525. R 652. 



Booby Gannet. 



. 748. Pelecanus trachyrhynchus Lath, b 615. c 526. r 64' . 



American White Pelican. 



740. O. p. trow-brid'-gi-i. To W. P. Trowbridge, who collected in California. 



741. Er-is-ma-tu'-ra rub'-I-da. Gr. epeto-juo, a stay, prop, pier, and o5pa, tail, as the stiffened 



member of the bird might seem to be. — Lat. ruhidus, ruddy, reddish. 



742. N6m-6'-nyx d6m-In'-I-ca. Gr. vofios, law, order, regular way, and oru|, nail. The nail at 



the end of the bill in all the species of so-called Erismatura, except rubida, is formed in a 

 particular way. — See Dendrmca, No.- 129. 



743. Mer'-gus mer-gan'-ser. Lat. mergus, a diver; mergo, I dive, mergere, mersi, mersum't 



whence submerged, immersed, &c. — Merganser is simply mergus + anser, i. e., diving- 

 goose. 



744. M. ser-ra'-tor. Lat. serrator, a sawyer; serratus, sawn, i.e., saw-shaped, serrate, serried, 



as the prominent teeth of the bill look like those of a saw ; serra, a saw ; supposed to be 

 equal to secra, from seco, I cut. 



745. M. cu-cul-la'-tus. Lat. cucullatus, hooded, wearing the cucullum, a kind of hood, a capu- 



chon, perhaps from its circular shape (kiJkAos). Very appropriate in this case. 



746. Su'-la bas-sa'-na. Sula, by Agassiz given as a proper name, was Latinized lately from 



the French name, Lc Sule. — Qiiasi-Lat. bassanus is an adjective derived from the name 

 of one of the great haunts of the bird, the Bass Rock, Firth of Forth, Scotland. 



747. S. Ieu-c6-gas'-tra. Gr. \fvK6s, Avhite, and yaa-r-fip, the belly. 



This stands as S.Jiber in the orig. ed. See Salv., Tr. Z. S. ix, pt. ix, 1875, p. 406. 



748. P61-6-ca'-nus trach-y-rhynch'-us. Gr. ireXiKav, or ireXeKivos, or Lat. pelecanus, a pelican. 



The etymology is obscure ; but the pelican was fabled to strike and wound its own 

 breast, that the young might be nourished with blood ; and tliere arc various Greek and 

 Latin words signifying some cutting and striking instrument, as an axe, which are 

 nearly identical in form with the above. — Gr. Tpax^s, rough, uneven, and f>vyxos. the 

 beak ; with reference to the deciduous excrescence or " centre-board " on the upper 

 mandible. 



