48 BIRDS OF NEW ZEALAND, 
Prion. Lacep. 
Bitu as long as the head, broad at the base, the upper mandible 
furnished near its edge with laminated serrations. 
189. PRION TURTUR. Soland. C.M. 
Whale-bird. Laughing Jackass (?) 
P. ariel. Goup. 
Apove, light ash; over the eye, white ; below, white ; shoulders and 
tip of the tail, brownish black ; chin, feathered. 
ii Oro WW ., 6°75 ; 'B., 15 T1235, width of bill, :3b: 
140. PRION BANKSII. Smith. C.M. 
Whale Bird. 
Procellaria equinoctialis. [ List of birds in New Zealand Exhibition. | 
Like twurtur, but with a broader bill, and the chin only’ half feathered. 
L., 11; W., 7; B, 1:2; T, 1-2; width of bill, -45. 
141. PRION VITTATUS. Gml. C.M. 
Like twrtur, but with the bill much swollen, and the chin nearly naked. 
AO 1 3 Bay 1°55. Th, 1 2ey ewidthyot sbilliico. 
Lgg.—White ; length, 2; breadth, 1:5. (Gould.) 
THALASSIDROMA. JVzgors. 
Brit, shorter than the head, weak, nasal tube long and elevated ; first 
quill, never the longest ; tarsi, long and slender ; hind toe, minute ; tail, 
more or less forked. 
All parts of the world. 
142. THALASSIDROMA MARINA. Lath. C.M. 
Top of the head, hind part of neck, and a spot on each side of the 
breast, grey ; back and wing coverts, brown ; upper and lower tail 
coverts, bluish grey. 
Sco Wine Onooie eb. 3 To 1 Bb: 
Fgg.-—White ; length, 1:5 ; breadth, 1:12 (Gould). 
Both Islands. 
