. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. ildii Fig 2 Lateral views of heads of Bufo gronulosus subspecies. 1. 6. g. granulosus, USNM 97107, 2. 6. g. goe/dii, MZUM 64528 3 6 g. mer,anae, AMNH 46531. 4. B. g. , MCZ 10089. 5. 6. g. faeebe-, AMNH 55774. 6. B. g. borbouri, RNH 10867. 7. 6. g. m,randar/be/ro,, BMNH 8. B. g. lutzi, MZUM 108908. 9. 8. g. hum- boldti, MCZ 24882. 10. 6. g. pygmaeus, USNM 132357. 11. B. g. azorai, BMNH DISCUSSION When the different subspecies of B. gran- are compared, two distinct types of heads
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. ildii Fig 2 Lateral views of heads of Bufo gronulosus subspecies. 1. 6. g. granulosus, USNM 97107, 2. 6. g. goe/dii, MZUM 64528 3 6 g. mer,anae, AMNH 46531. 4. B. g. , MCZ 10089. 5. 6. g. faeebe-, AMNH 55774. 6. B. g. borbouri, RNH 10867. 7. 6. g. m,randar/be/ro,, BMNH 8. B. g. lutzi, MZUM 108908. 9. 8. g. hum- boldti, MCZ 24882. 10. 6. g. pygmaeus, USNM 132357. 11. B. g. azorai, BMNH DISCUSSION When the different subspecies of B. gran- are compared, two distinct types of heads are noticed: one, high, short and wide, and the other depressed, in general elongate, and narrow. To the first group belong: B. g. grantihmis, B. <:.. iiockUi, B. ii,. meiiamie, B. g. minor, B. <i. major, B. a,, fer- nandezae, B. g. dorbignyi, and to the sec- ond: B. g. heehei, B. g. Iiitzi, B. g. miranda- ribeiroi, B. g. harbotiri, B. g. pygmaeus, B. g. azarai. The distribution of the subspecies with depressed heads is not continuous; instead, between B. g. beebei and the others of this series there are B. g. merianae and B. g. goeldii with high, short and wide heads. The development of the crests varies among the subspecies. In some they are low and granular, in others they have rippled borders, and in some others they are con- siderably raised, as in B. g. fernandezae, B. g. dorhigniji, B. g. merianae, B. g. azorai. The degree of expansion of the maxillary crests varies considerably from one subspe- cies to another: in B. g. granulosus they are not expanded; in the subspecies of northern South America they are better marked, but achieve their greatest development in cer- tain of the southern subspecies, , B. g. major, B. g. fernandezae, B. g. azarai and especially in B. g. dorbignyi. The dorsal granules on the parotoids are rounded and flat in the subspecies of northeast and. Please note that these images are extracted from scanned page images that may have been di
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Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
