THE BIRDS OF AUSTRALIA. 
Forster’s drawing No. 92, upon which the description of Forster’s 
P. hcesitata was based, is absolutely the source of Latham’s description of 
his “ Glacial Petrel,” which Gmelin named Procellaria gelida, the original 
descriptions being here given : — 
Forster’s Procellaria hcesitata. 
Procellaria supra cinerea, subtus Candida, rostro flavescente et nigro, pedibus coerules- 
centibus, palmis flavls 
Habitat in lat. 48° Oceani pacifici antarctici. Diu mecum haesitavi, an non haec 
Procellaria eadem esset cum Proc. 'pujjino, at magnitude et varii characteres evincunt, 
banc diversae esse speciei 
Corpus magnitudine Proc. glacialis vel paulo maius 
Rostrum capite brevius, compressum, apice aduncum. Mandibula superior sulco 
oblique a naribus ad curvaturam apicis ; inferior sulco parallelo, ante curvaturam 
desinente. Nares superae, tubulosae, septo distinctae, emarginatae, truncatae. 
Nares et pars superior mandibulae superioris nigra, apex paUide-flavus, pars 
inferior mandibulae superioris usque ad sulcum ab ipsa basi flavescens; pars 
inferior mandibulae inferioris infra sulcum flavescens, supra sulcum et apice 
nigricans. Lingua brevis, spatulata, marginibus postice retrorsum serratis. 
Palatum triplici ordine carinatum et retrorsum serratum. Oculi super! ; iride 
nigra. Pedes ut in congeneribus antecedentibus coerulescentes antici, postice 
nigri, membrana inter digitos flava 
Caput cum genis, cervice, dorso, uropygio et crisso, remigibus et rectricibus cinerea. 
Gula, iugulum, pectus, abdomen Candida 
Remiges 1-10 sensim decrescentes, prima longissima, nigrae ; scapis basi albicantibus ; 
reliquae 11-30 breves. Alae infra cinereae. Rectrices 12 ; cauda rotundata, 
nigra 
Mensue^. 
Ab anice rostri ad 
Alae expansae . . 
Rostrum longum 
profundum 
latum 
Pedes cum femoribus . . 
Digitus medius ab ungue postico 
201 
18 „ 
51 
2 
1 
J5 
^4 
Procellaria gelida. Gmelin, Syst. Nat., p. 564. 
Pr. nigra, vertice, facie, cervice, humeris et abdomine cinereis, mento, gutture et pectore 
albis, rostro flavo, pedibus caeruleis. 
Glacial Petrel. Lath., Syn. III., 2, p. 399, n. 5. 
Habitat intra circulum Antarcticum, potissimum inter glaciem, 19 poUices longa. 
Narium tubus, margo utriusque mandibulae, dorsum superioris, apexque inferioris nigra ; 
digit! subtus albi ; ungues nigri. 
Latham’s description being : — 
Glacial Petrel. 
Length nineteen inches. Bill an inch and three-quarters, yellow ; the tube which covers 
the nostrils, top of the upper mandible, and end of the lower, black ; the edges of both are 
of the same colour ; the top of the head, taking in the eyes, and the hind part of the neck, 
to the shoulders, pale blueish ash-colour ; the rest of the upper-parts dusky Hack ; chin, fore- 
part of the neck, and breast, white ; from thence to the vent pale ash colour ; legs and webs 
blue ; claws black ; sole of the foot white. 
Inhabits the Antarctic Circle with many other species ; chiefly found among the ice. 
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