224 AVES: STEGANOPODES. — XXXIV. 
673. P. fuliginosus Strickland. Sooty SurarwarTer. Bill 
dusky. L.16. W.12. B. 13. Atlantic, N. to Grand Banks. 
(Lat., sooty.) 
340. ZISTRELATA Bonaparte. (olorpyAaros, goaded on by a 
gad-fly.) 
674. 23. hasitata (Kuhl). Biack-caprep Petrex. Upper tail- 
coverts and lower parts white; upper parts mostly blackish ; tail 
graduated. L.16. W.11. T.5. B. 1}. Atlantic, N. to N. Y., 
scarce. (Eu.) (Lat., heesitatus, stuck-fast, the describer being in 
doubt.) 
341, PROCELLARIA Linnzus. (Lat., stormy.) 
675. P. pelagica L. Storm Perrey. Dusky; upper tail cov- 
erts white, edged with black. L. 53. W.43. T. 2}. N. Atl, 
rarely S. (£u.) 
342. OCEANODROMA Reichenbach. (Qxeavos ocean ; dpdpos, 
running.) 
676. O. leucorhoa Vieillot. Leacn’s PeTREL. Sooty, upper 
tail coverts white; feet black. L. 8. W. 64. T. 4. Northern 
Seas. (Eu.) (Acuxés, white; éppos, rump.) 
343. OCHANITES Keyserling & Blasius. (dxeavirns, a son of 
the sea.) 
677. O. oceanicus (Kuhl). Witson’s PETREL. Sooty; wings 
and tail black; upper tail coverts white. L. 7. W.6. T. 3. 
Tarsus 14. Cosmopolitan, common. (Eu.) 
OrpER XXXIV. STEGANOPODES. (THE ToripatmatTE 
Birps.) 
Desmognathous swimmers with all four toes full-webbed; hind 
toe lengthened, scarcely elevated; tibia feathered; bill horny, not 
lamellate; nostrils very small or abortive; no basipterygoids; a 
prominent gular pouch; tarsus reticulate. AAltricial. “ Notwith- 
standing the shortness of the legs and the character of the toes, 
. the birds of the present order are unquestionably nearly re- 
lated to the Herodii” (Stejneger). Of this small order, most of the 
species are sea-birds, active and voracious, about half of all being 
cormorants. (oreyavos, covered ; zrovs, foot.) 
Families of Steganopodes. 
a. Upper mandible not hooked at tip. 
b. Bill very thick through base, the tip slightly curved; tail moderate, 
graduated, the feathers rather pointed. . . . . SuLipa, 131. 
bb. Bill slender, nearly straight; neck very long aud slender; tail long, 
fan-shaped when spread, the feathers very broad. ANHINGIDA, 182. 
aa. Upper mandible hooked at tip. 
