7. STXTHLTnORIlAMPnUS. 595 



greatest depth of both mandibles at base 0"25, wing 4-8, tail 1'3-1"4, 

 tarsus 0-95-1, middle toe and claw l-0o-l'08. 

 Hah. South California to Cape St. Lucas. 



a,b. ^ '^ a,A. b\.. San Renito I., Lower California, Salvin-Godman Coll. 

 March 29. 



2. Micruria craveri. 



Uria craveri, Salmid. Atti Soc. ItciL viii. p. 387 (18G5) [Lower 



California]. 

 Bracbvrhampbus craveri, Coues, P. Ac. Philad. 1808, p. 66; Streetn, 



Bail. U.S. Nnt. 3fus. vii. p. 32 (1877) [habits]; Coues, Key N. 



Amer. B. 2nd ed. p. 814 (1884). 

 Brachyramphus craveri, Baird, Breiv. ^- Ridqio. Water-B. N. Amer. 



ii. p'. 502 (1884) : A. O. U. Check-l. p. 81 (1886) ; Ridgiv. Man. N. 



Amer. B. p. 15 (1887). 



Adult. Differs chiefly from M. Jv/poJmca in havino; the lining of 

 the wing smoky-grey and the tips of the greater and median under 

 wing-coverts indistinctly tipped with white. Tail composed of 12 

 feathers. " Iris dark brown ; bill black ; teet green " (Xantus). Total 

 length about 8-.5 inches, bill from feathers on forehead to tip 0"7, 

 from gape to tip 12, greatest depth of both mandibles at base 0'25, 

 w-ing 4-46, tail 1'3, tarsus 0-95, middle toe and claw about 0-9-5. 



Through the kindness of Count Salvadori I have been enabled to 

 examine the type of this species, which is undoubtedly an adult bird 

 in worn breedin£T-pluniage. It seems to me possible that it may be 

 merely the breeding-plumage of J/, hiipoleuca, as has been already 

 suggested by Dr. T. PT. Streets. 



Hah. South California (near Cape St. Lucas). 



7. SYNTHLIBORHAMPHUS. 



Type. 



Syntliliboramphus, Brandt, Bull. Ac. St. Petersh. ii. 

 " p. .347 ( 18.37) S. antiquus. 



Eill moderately elongate and compressed, the cnlmen curving 

 grndually downward towards the tip. Inter-ramal feathering ex- 

 tending slightly beyoud a vertical line drawn from the anterior 

 border of the exposed nasal opening, which is rounded and overhung 

 anteriorly by a small horny scale. Tail compo.sed of 14 feathers. 

 Metatarsus about equal in length to the middle toe aud claw. Size 

 small. 



liange. Coasts of North Pacific and Bering Sea. 



Key to the Species in hreeJitirj-plumar/e. 

 T. Forehead without crest ; white stripes narrow 

 aud contiued to the sides of the occiput : black 

 on the throat continued down the middle of 



the fore-neck antiquus, p. 596. 



II. Fiiridiead with clono;ate crest of narrow black 

 feathers; wliite stripes broad, conmiencing 

 on each side of the crest and leaving only the 

 middle of the cniwn black : grey on throat 



not continued down middle of fore-neck. . . . u-umi:ii^u7)if. p. 598. 



2u2 



