. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Systematics and evolution of Triodopsis • VagvoJgyi 215 1 MINN. • A. ALBOU\BRIS 3 INTERMEDIATE A, ALBO- UBRIS - A, mJOR 0 A, riAJOR • INTERTIEDIATE A, ALBO- LABRIS - A, ALLENI ^ A. ALLENI A FUSCOLABRIS 0 50 100 MILES Figure 22. Distribution of Triodopsis albolabris. Thick, solid line surrounds the range of a. albolabris, a. major and o. alleni; thick, dashed hne separates the zone of intergradation from the range of a. albolabris. F, occurrence of luscolabris; M, maritimo; T, traversensis; the latter two forms are con
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Systematics and evolution of Triodopsis • VagvoJgyi 215 1 MINN. • A. ALBOU\BRIS 3 INTERMEDIATE A, ALBO- UBRIS - A, mJOR 0 A, riAJOR • INTERTIEDIATE A, ALBO- LABRIS - A, ALLENI ^ A. ALLENI A FUSCOLABRIS 0 50 100 MILES Figure 22. Distribution of Triodopsis albolabris. Thick, solid line surrounds the range of a. albolabris, a. major and o. alleni; thick, dashed hne separates the zone of intergradation from the range of a. albolabris. F, occurrence of luscolabris; M, maritimo; T, traversensis; the latter two forms are considered synonymous with a. albolabris. ALB., type locality of a. albolabris; ALL., a. alleni; FUS., luscolabris; GOOD., goodrichi, considered synonymous with a. albo- labris; MAR., maritima; TRA., traversensis. Numbers without a circle are mean values of samples in character index; sam- ples of a. albolabris range from 25 to 50; intermediate between a. albolabris and o. major, 50-55; a. major, 65-95; intermediate between a. albolabris and o. alteni, 25; o. alleni, 15-35; luscolabris, considered intermediate between o. alleni and o. major, 45-50. Other symbols refer to elevation, forest types, and state boundaries, as explained in Figure 3. Description and differcntiol diagnosis. Shell larger, higher, and more globose than that of a. ci]holahris\ width mm; height l( mm, height to width ratio Sculpture same as in a. albola- bris, perhaps a little coarser. Lip swelling usually very thick; the swelling replacing the lower lip tooth is present in about two- thirds of the specimens; parietal lamella absent. In a. albolabris, the lip swelling is usually thinner, and the lip swelling and the parietal lamella are present occasionally. Distribution. Triodopsis a. major is con- fined to a small area from North Carolina to Alabama (Fig. 22). A narrow zone of intergradation separates its range from that. Please note that these images are extracted from sca
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Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
