. The Canadian field-naturalist. 1998 McAlpine and Burt: Helminths of Frogs in New Brunswick 57. Figures 8-15. 8. Halipegus occidualis, adult. 9. Apharyngostrigea pipientis, tetracotyle teased from cyst. 10. Alaria arisaemoides, metacercaria. 11. Echinostoma trivolvis, adult. 12. Echinostoma trivolvis, detail of anterior end. 13. Megalodiscus temperatus, adult. 14. Haematoloechus longiplexus, adult. 15. Haematoloechus medioplexus, adult. amphistomes and the considerable morphological variability among his specimens of M. temperatus. Manter (1938) observed that "...contraction affects body
. The Canadian field-naturalist. 1998 McAlpine and Burt: Helminths of Frogs in New Brunswick 57. Figures 8-15. 8. Halipegus occidualis, adult. 9. Apharyngostrigea pipientis, tetracotyle teased from cyst. 10. Alaria arisaemoides, metacercaria. 11. Echinostoma trivolvis, adult. 12. Echinostoma trivolvis, detail of anterior end. 13. Megalodiscus temperatus, adult. 14. Haematoloechus longiplexus, adult. 15. Haematoloechus medioplexus, adult. amphistomes and the considerable morphological variability among his specimens of M. temperatus. Manter (1938) observed that "...contraction affects body proportions considerably in these ; Although typically M. temperatus is triangular in shape with a posterior sucker that is wider than the body, 27 New Brunswick specimens show consider- able variation in body proportions and the relative size of the posterior sucker. Nonetheless, all of these worms can be assigned to M. temperatus based on the description of Stafford (1905). Price and Buttner (1982) reported their specimens as M. rankini but the deposited slide (USNPC 76349) is labelled M. temperatus. Previous definitive host records are summarized in Brooks (1976) and Prudhoe and Bray (1982) with the following additions and corrections: H. avivoca in Arkansas (McAllister et al. 1993b); R. catesbeiana in Michigan (Fortner 1923; Muzzall 1991) and Ohio (Ashton and Rabalais 1978); 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 Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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