370 University of California Publications in Zoology \^m.. 13 



Alcedinidae. — Ceryle alcyon differs considerably from Coracias 

 in structure of barbules of remiges. Distals of inner vane have 

 long, slender, and conspicuous ventral cilia, and proximals of same 

 vane have shorter pennula, this being only about one-half length of 

 base. On distal half of barbs of outer vane, proximals (pi. 31, fig. 

 79a) have very short, stumpy bases, and short pennula, the ventral 

 barbicels exceedingly long and strong, in fact relatively larger and 

 stronger than they have been found in any other birds. Distal 

 barbules of back feathers also have long ventral cilia. Breast feath- 

 ers unusual in having a series of slender ventral cilia on proximal 

 barbules (pi. 31, fig. 79&). 



Upupidae. — Irrisor viridis has no dorsal cilia whatever on distal 

 barbules even on inner vane of remiges. Hooklets only 4 in num- 

 ber, slender and well separated, ventral cilia well developed, the 

 distal ones more conspicuous on account of the way they lie (pi. 

 31, fig. 83a), Distals of outer vane have the latter character even 

 more conspicuous. Proximals of outer part of barbs of outer vane 

 have short reduced base, and relatively long pennulum with a 

 series of short weak unhooked ventral cilia (pi. 31, fig, 83&). TJpupa 

 indica is very similar to Irrisor in structure of feathers. 



Bucerotidae. — Barbules of remiges considerably modified from 

 type. In Hydrocorax mindanensis distal barbules of inner vane 

 (pi. 31, fig. 82a) with very large base with ventral contour strongly 

 sinuate, and ventral teeth relatively large. Pennulum very broad 

 in lateral view in region of hooklets and of first 2 or 3 cells with cilia. 

 Hooklets 4 or 5 in number, very large and liea\'y, but not elongate ; 

 ventral cilia short, stout and blunt, the proximal ones the longer, 

 but not showing when lateral aspect of base is in view on account 

 of twist in pennulum; the more distal ones, however, are in lateral 

 view, so that pennulum appears club-shaped (see plate 31, figures 

 82a and c) ; dorsal cilia rudimentary except basal two, which are 

 large and lobate. Distal barbules of outer vane (pi. 31, figs. 82c, d) 

 very similar, but hooklets usually 6, dorsal cilia absent, and width 

 of booklet region very great, as shown by plate 19, figure 82d. 

 Proximal barbules very long with relatively slender base, 4 or 5 

 moderate, pointed ventral teeth, and broad pennulum, about half 

 as long as base with backward-projecting rudimentary barbicels. 

 Proximals of outer vane do not have barbicels even on outer part 

 of barb, as shoWn by plate 31, fig. 82e. 



Anthracoceros and Lophoceros agree in important details with 



