. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 370 BULLETIN: MUSEUM OF COMPARATTVE ZOOLOGY in others the palatine process continues into the rest of the premaxilla without a break (compare Figs. 31B and 31C; see also Tordoff. 1954a). The palatine and other bones of the skull are similar to those of the crow and do not require a separate description. Lateral flange. The palatine process is lacking as a distinct structure in several groups of finches, such as the evening gros- beak {Hesperiphona, Fig. 4). However, in contrast to the last three types, there is a late
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 370 BULLETIN: MUSEUM OF COMPARATTVE ZOOLOGY in others the palatine process continues into the rest of the premaxilla without a break (compare Figs. 31B and 31C; see also Tordoff. 1954a). The palatine and other bones of the skull are similar to those of the crow and do not require a separate description. Lateral flange. The palatine process is lacking as a distinct structure in several groups of finches, such as the evening gros- beak {Hesperiphona, Fig. 4). However, in contrast to the last three types, there is a lateral flange on the anterior end of the palatine which extends almost to the jugal bar. This lateral. Figure 4. Ventral surface of the skull of an evening grosbeak (Hesperi- phona). The palatine process of the premaxilla is absent {= fused to the prepalatine process of the palatine). A lateral flange is present at the site of the fused palatine process. flange is the bony boss referred to below in the section on func- tion and elsewhere in this paper. The lateral flange of the palatine is usually fused to the premaxillary mass, but it is sometimes separated from that bone by a suture. The palatine and other bones of the skull are similar to those described for the crow except that they are stouter and the transpalatine process is divided into two subprocesses. There is no evidence of a strengthening of "twisted" prepalatine bars such as de- scribed by Tordoff (1954a, p. 18).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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