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48 MR, W. P. PYCRAFT ON THE [May 2, 
vil. Tae Petyic GIRDLE. 
Outside the Passerine series the pelvic girdle of the Kurylemide 
resembles most nearly that of the Capitonide ; from which, however, 
it may be distinguished by the fact that whereas in the Hurylemide 
the post-acetabular ilium is produced caudad into a spine, in the 
Japitonide this backward extension is broad and bifurcate. 
Among the Passeres it approximates most closely perhaps to that 
of Chasmorhynchus. Cymbirhynchus only, among the Kurylemide, 
appears to possess even a vestige of the pectineal process. In 
Calyptomena the pre-acetabular ilium is broad throughout its whole 
length, and sharply truncated anteriorly. The inferior bor der 
thereof is markedly sinuous. The pre-acetabulz of the right and 
left sides are widely separated one from another ; and rise so as to lie 
nearly level with the ridge of the neural crest of the synsacrum, 
thus forming a large, open, canalis dleo-lumbalis. The post- 
acetabular region of the ilium is expanded to form a broad dorsal 
plane, and passing backwards terminates in a long spine, which, in 
Cymbirhynchus and Corydon, is closely applied to the free ends of 
the transverse processes of the post-synsacral caudal vertebre. 
The ischiwm in Calyptomena is long, produced backwards consi- 
derably beyond the level of the post- acetabular region of the ilium, 
and terminates in adownwar dly-directed hook- -shaped process which 
fuses with the pubis. Cymbirhynchus differs but slightly from 
Calyptomena is this respect. In Corydon the ischium is shorter 
antero-posteriorly, and deeper, than in the two genera just described, 
and does not project beyond the level of the free end of the post- 
acetabular ilium. Further, the dorsal border of the pre-ilium is 
much cut away anteriorly so as to expose a great portion of the 
synsacral neural crest. 
The ischio-pubic fissure is closed im all three genera here 
described ; the obturator foramen is shut off therefrom by a bony 
bar. 
The pubis is long and straight, and projects beyond the level 
of the ischium, especially so in Calypiomena. 
The close approximation of the post-acetabular ilium to the 
transverse processes of the free caudal vertebre is due to the 
shortness of the transverse processes of the synsacral vertebrze 
already referred to. 
The fovea lumbalis is small; and the fovea ischiadica and 
pudendalis are confluent. 
vill. THe Pecrorat Lime. 
The pectoral limb of the genera here described presents no 
marked differences by which they can be distinguished one from 
another. 
It resembles that of the Coliide and Capitonide in that 
metacarpal IT. sends backwards from its proximal end a small 
triangular bony spur (intermetacarpal process) to abut against 
