224 AVES : STEGANOPODES, — XXXIV. 
673. P. stricklandi Ridgway. Sooty SHEARWATER. Bill 
dusky. L. 16. W. 12. B. 12. Atlantic, N. to Grand Banks. 
(To Hugh Strickland.) 
340. ZSTRELATA Bonaparte. (oiorpndaros, goaded on by a 
gad-fly.) 
674, 26. hesitata(Kuhl). BLAck-cAppep Petre. Upper tail- 
coverts and lower parts white; upper parts mostly blackish ; tail 
graduated. L.16. W.11. T.5. B. 14. Atlantic, N. to N. Y., 
scarce. (Hu.) (Lat., hesitatus, stuck-fast, the describer being in 
doubt. ) 
341. PROCELLARIA Linneus. (Lat., stormy.) 
675. P. pelagica L. Storm PETREL. Dusky; upper tail cov- 
erts white, edged with black. L.53. W.42. T. 24. N. Atl, 
rarely 8S. (£u.) 
342. OCEANODROMA Reichenbach. (Qkeavos ocean ; dpoprs, 
running. ) 
676. O. leucorhoa Vieillot. LeACcH’s PETREL. Sooty, upper 
tail coverts white; feet black. L. 8. W. 64. JT. 4. Northern 
Seas. (Eu.) (Aevxos, white; éppos, rump.) 
343. OCEANITES Keyserling & Blasius. (axeavirns, a son of 
the sea.) 
677. O. oceanicus (Kuhl). Wurson’s PETREL. Sooty; wings 
and tail black; upper tail coverts white. L. 7. W.6. T. 3. 
Tarsus 14. Cosmopolitan, common. (£w.) ; 
OrpER XXXIV. STEGANOPODES. (THE TorTiIrpaALMATE 
BrrpDs.) 
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. Altricial. ‘“ 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. . . . . . SULID#, 131. 
bb. Bill slender, nearly straight; neck very long and slender; tail long, 
fan-shaped when spread, the feathers very broad. ANHINGID&, 132. 
aa. Upper mandible hooked at tip. 
