. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. LAURENT: REVISION OF TYPHLOPS PUNCTATUS GROUP 403 gierrai usambaricus Longitudinal count 398-464 344-390 of scales Ratio length/diameter Ratio length/width of head Conclusions. From the foregoing it must be concluded that eight specific gaps, proved by sympatric relationships, are evident in the "Typhlops punctatus" complex. ALLOPATRIC RELATIONSHIPS The populations of western Africa (Liberia to Ghana). Not- withstanding the number of names which have been based on specimen
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. LAURENT: REVISION OF TYPHLOPS PUNCTATUS GROUP 403 gierrai usambaricus Longitudinal count 398-464 344-390 of scales Ratio length/diameter Ratio length/width of head Conclusions. From the foregoing it must be concluded that eight specific gaps, proved by sympatric relationships, are evident in the "Typhlops punctatus" complex. ALLOPATRIC RELATIONSHIPS The populations of western Africa (Liberia to Ghana). Not- withstanding the number of names which have been based on specimens from this region, there are no apparent grounds for a taxonomic splitting of these populations of Typhlops. The char- acters bridge the gap between true punctatus and the Cameroon populations {congestus). The color pattern is variable in the three groups, with two phases: the "punctatus" phase with each scale bicolored (the amount of black pigment decreasing from the back to the sides or to the belly), and the "blotched" • runctatus punctatus (Leach) OTyphlops punctatus libenensis (Hallou/e ops congestus (Dumeri! et Bibron) ' ops boulengeri Socage Map 1. Distribution of species of the Typhlops punctatus group in West Africa. In the savanna populations the ventral pigmentation is strongly developed, nearly all the ventral scales are partly pigmented, and the blotched phase has spots on the belly. In the two other samples the belly is generally devoid of any pigment except for some punctating or spots on the sides, which may be rather fre- quent; sometimes the light part of the belly is narrow, but only one. 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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