270 MR. W. P. PYCRAFT ON THE MORPHOLOGY AND 
APTERYX. 
a. Vomer long, equal to or longer than the width across the paroccipital 
processes at widest, notched anteriorly, aud with the median cleft not 
extending forwards beyond the middle . . . ... .. =. =... . A. australis. 
6. Vomer less than width across paroccipital processes. 
a’, Vomer notched anteriorly, the median anterior portion nearly as long as 
the paired posterior limbs; paroccipital processes well defined; basi- 
temporal plate bounded antero-laterally by a pair of ridges passing 
forwards into parasphenoidal rostrum . . . : Sess A, haastii. 
ob’. Vomer imperfect anteriorly, median portion atti shower than the faihea 
posterior limbs. 
a”, Size not less than 7 inches. . . . Soca Hie by Sd SO Rohuninaln. 
bemsize moplesssunan Ga inChes) le ieee lid Wet Gel nlry ley lite) =) CA vOmere 
RaHEA. 
A. Temporal fossa more or less sharply defined and extending backwards to 
meet the lambdoidal ridge; lachrymal with elongated dorsal processes 
arching backwards over orbit. 
a, Posterior nares markedly wider anteriorly than posteriorly ; anterior vome- 
rine cleft not extending backwards to the level of the hinder angle of the 
lachrymo-nasal fossa; length of quadrato-jugal fossa less than width 
across beak measured across the maxillary pillars bounding the lachrymo- 
nasal fossa anteriorly . . . . . : ee eel os) eet mericands 
6. Posterior nares not wider anteriorly than nouttiorly: anterior vomerine 
cleft extending backwards to the level of the hinder angle of the lachrymo- 
nasal fossa; length of quadrato-jugal fossa equal to width across beak at 
the level of the maxillary processes bounding the lachrymo-nasal fossa. &.macrorhyncha’. 
B. Temporal fossa not sharply defined and not extending backwards to lambdoidal 
ridge ; lachrymals with short orbital processes; anterior vomerine cleft very 
BONE 9. Roe emt sc™ Yay Mey Lo al culties le Mey mR, Cet sine ae CREM R FN CDR 
Dromavus. 
a. ee not exceeding 7 inches. : 
. Post-orbital processes short . . . Meee - . . . . D.nove-hollandie. 
. Post-orbital processes long, extending dowawanas to aan a short distance 
(;% in.) of quadrato-jugal bar . . . : Siyitip Set io: Ge eow Calta ndOdadetons 
b. Size not exceeding 5 inches; roof of skull with a very conspicuous cerebral 
Come, js Gitte CSTRe) Cems are) Mi rei ME Reset 8 IP eater 3: 
1 The specific characters of this species have been drawn from a single adult skull, kindly lent me by 
Mr. Beddard from the Zoological Society’s Collection. 
2 This skull is from a skeleton in the Florence Museum. The bones of the palate are missing. The cranium 
closely resembles that of D. nove-hollandic, differing therefrom chiefly on aceount of its very small size and 
the prominence of the cerebral dome, whilst in the peculiar form of the inferior limbs of the lachrymal it 
