. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 332 bulletin: museum of comparative zoology The eleven well characterized forms may be tabulated as follows: D. aenea M. ruficeps M. phasianella T. curvirostra. En ggano* zzm Mentawi & Paei. Xias Simalur BBZ2Z i I i i Sumatra 1. 2. 3. 4. 5. 1. 2. 3. 1. 2. 3. 4. 5. 1. -2. 3. 1. 2. 3. 4. 5. M H difference in size. V/J///A difference in color. Fig. 3 In the above chart Sumatra birds are taken as standard. Their in- dividual variation is taken as less than the arbitrary unit 1, within which it is considered that local


. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 332 bulletin: museum of comparative zoology The eleven well characterized forms may be tabulated as follows: D. aenea M. ruficeps M. phasianella T. curvirostra. En ggano* zzm Mentawi & Paei. Xias Simalur BBZ2Z i I i i Sumatra 1. 2. 3. 4. 5. 1. 2. 3. 1. 2. 3. 4. 5. 1. -2. 3. 1. 2. 3. 4. 5. M H difference in size. V/J///A difference in color. Fig. 3 In the above chart Sumatra birds are taken as standard. Their in- dividual variation is taken as less than the arbitrary unit 1, within which it is considered that local island populations may vary and still be considered inseparable. The unit 2 is used to express those varia- tions in size or color, either one of which by itself is still too slight for separation. Above this number the units used indicate the relative degree of differentiation of the two factors, size and color, of the different island populations. 61. Treron curvirostra haliploa Oberholser Simalur. The type, an adult male, measures: wing ; tail ; culmen The soft parts are marked: iris orange, orbital skin yel- lowish green, feet dull purple. Junge (1936) gives the measurements of four males as: wing 146-151; tail 90-94; culmen This race differs from curvirostra by larger size. Thirteen males from Peninsular Siam and Sumatra (harterti is a synonym) measure: wing 132-139; tail ; culmen 16-18. Junge () notes that a single male from Babi is quite yellowish on the under surface. His description sounds very much like smicra from farther south (see also Junge, 1938, p. 340.). A bird of original 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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