282 MR. W. P. PYCRAFT ON THE [ Mar. 17, 
Rhamphococeyx, Rhinococcyx, and Piaya; it is small in Rhopodytes 
and Zaccocowa, and vestigial or wanting in other genera. 
The fovea lwmbalis is very small, and the fovea ischiadica and 
pudendalis are confluent. There is a well-marked iliac recess. 
Text-fig. 46. Text-fig. 48. 
Text-fig. 46.—Dorsal aspect of the pelvis of Geococcyx mexicanus, showing the 
narrow preacetabular ilia, extremely broad postacetabular dorsal plane, and 
large pectineal process. 
Text-fig. 47.—Side view of same, to show the broad ledge-like plate of the post- 
acetabular ilium, the short pubis, and large pectineal process. 
Text-fig. 48.— Ventral aspect of same, showing the great overhanging ledge of the 
dorsal plane. All figures of natural size. 
The pelvis of the Musophagi resembles that of the more 
specialised Cuculi. Though relatively wide, its breadth is due 
rather to the great length of the synsacral transverse processes 
than to the dorsal plane of the postacetabular ilium. The pre- 
acetabular region of the ilium differs conspicuously from that of 
the Cuculi, inasmuch as in this group the dorsal aspect is so much 
cut away as to le far below the level of the synsacral crest, save 
where it rises at the extreme antero-dorsal angle. In the Muso- 
