. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Studies in Chordeumida • Shear 205 C. fustis. Diagram 8 Diagram 8. Possible relationships between species groups of North American Cleidogona and 7;ganogona. Lines do no' imply direction of evolution unless tipped with on arrowhead. Species groups are arranged roughly as they are distributee geographically; compare Map 10. or much inflated (C. celerita). The telopo- dites are clublike or very' small. There has been a great deal of confusion about spe- cies names in the caesioannuhta-grouY). Unita Group. This small gro
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Studies in Chordeumida • Shear 205 C. fustis. Diagram 8 Diagram 8. Possible relationships between species groups of North American Cleidogona and 7;ganogona. Lines do no' imply direction of evolution unless tipped with on arrowhead. Species groups are arranged roughly as they are distributee geographically; compare Map 10. or much inflated (C. celerita). The telopo- dites are clublike or very' small. There has been a great deal of confusion about spe- cies names in the caesioannuhta-grouY). Unita Group. This small group of two species is a western and southern extension of the major-gvou-p. The gonopods and the animals themselves are smaller, more simplified, and the colpocoxites are fused at their bases. Too little is known about the distribution of the group to make any confident statements about its origin, ex- cept that it definitely is a derivative of the major-group and may possibly be related to the species of Tiganogana. Mississippkina Group; Alata Group. The majority of species in these two groups occurs on the Gulf Coastal Plain, Atlantic Coastal Plain, and south into peninsular Florida. They are highly specialized deriv- atives of the major stock; species of the fl/^7to-group form a series difficult to sepa- rate from those of the W7fl/or-group, but the species most similar to C. major, C. Jiudena, occurs in Florida. The gonopod colpocoxites of both groups are thinner,. 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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