GENUS OSSIFRAGA. 
Ossifraga. limb. et Jaeq. (1844.) 
84. OSSIFRAGA GIGANTEA. 
Vol. II. Plate LIX. 
GENUS JESTRELATA. 
JEstrelala. Bonp. Cons. Av. Yol. II. p. 188. 
85. iESTRELATA HESITATA. Yol. n. Plate LX. 
GENUS PRIOFINUS. 
Priofinus. llombron tfi Jaoq. (1844.) 
86. PRIOFINUS CINEREUS. Yol. II. Plate LX. 
GENUS CYMOCHOREA. 
Cymochorea. Cones. P. A. N. S. (1864). p. 75. 
87. CYMOCHOREA IIOMOCHROA. 
Cymochorea IIomocuroa. Cooes. Mon. Procell. Proc. Acad. Nat. Scten. (1864). p. 
Tiialassidroma Melania. Lawk. B. of N. Am. pi. fig. nec, text. 
A figure of this species having been introduced in plate XC1X of the B. of N. Am. by Baird. Cassin and Lawk. under the title of 
Thalassidroma Melania, it did not appear necessary to illustrate it in this work. 
88. CYMOCHOREA MELANIA. 
Yol. II. Plate LXI. 
GENUS HALOCYPTENA. 
Ilalocyptena. Coucs. P. A. JV. S. p. 78. (1864.) 
89. HALOCYPTENA MICROSOMA. Yol. II. Plato LXI. 
GENUS FREGETTA. 
Fregetta. Bon. Cons. Av. Vol. II. p. 197. 
90. FREGETTA LAWRENCE! 
Thalassidroma Fregetta. Lawr. Ann. Lye. Nat. Hist. N. Y. (1851). p. 117. 
Fregetta La wkkncei. Bon. Consp. Av. Yol. II. (1855). p. 198. 
The unique example of this species having been lost, I am unable to introduce a figure of it in this work. I append the original 
description by Mr. L.vwrf.xce. 
“Head and wings black; neck, breast and back, dark plumbeous, or dull bluish-ash; wing coverts brown, the tail white at the base, 
with the terminal half and the two central feathers black; abdomen, inside covering of wings, and rump, white; bill and legs black; 
Tail even, claws flattened and of an oval form. 
“ Length, about 8 inches ; wing, 6 ; tail, 3 ; tarsus. If. Habitat, Florida coast." 
GENUS PUFFINUS. 
Puffinus. Briss. Orn. (1760). Vol. VI. p. 130, 
91. PUFFINUS CREATOPUS. 
Puffinus Creatopus. CoorEit. Mss. Corns. Mon. Procell. Proc. Acad. Nat. Scion, p, 131. (1864). 
I have never seen this bird, and the unique example, like the preceding, appears to be lost. Dr. Coces’ diagnosis is as follows : 
“ P. Puffini majorh statura, nec el color ibus perdisshnilts ; sed vostro multo breviore, crassiore, tubulis nasalibm inflalisj fere omnino nisi 
ungue flavescente cameo: ped'tbus brevioribus, gracilionbus . camels; tectricibus caudee svperioribus et mferiovibus ex ioto brunneo nigris ; 
remigibm primariis spatio albo basin versus interni pogonii carentibus. 
Habitat. Specimen typicum et unicum ex insult “ San Nicholas ” prope California. 
Length, 19.00; extent of wings, 45.00. Bill along culmen, 1.60; gape, 2.30; from feathers on side of lower mandible, 1.50; 
height at base, ,60; Nasal tubes .40 ; wing from flexure, 12.50; tail, 5.00; tarsus, 2.10; middle toe and claw, 2.65, 
