. Bulletin - United States National Museum. Science. Fig. 256, -Habronema unilateralis. a, Head, front view ; b, male tail. Drasche, 1884 Morphology.—Habronema (p. 172) : Head continuous with body; anterior extremity noticeably attenuated, posterior of increased size. Cuticle transversely striated. Mouth (fig. 256a) with 2 lateral lips, the median edge notched; each lip with a large lobe and 3 papillae. Dorsal and ventral lips tooth-like. Four large submedian papillae. Body with one lateral ala, moderately wide. Male 7 to 9 mm. long by 20(V wide. Caudal extremity (fig. 2566) semispiral; caudal
. Bulletin - United States National Museum. Science. Fig. 256, -Habronema unilateralis. a, Head, front view ; b, male tail. Drasche, 1884 Morphology.—Habronema (p. 172) : Head continuous with body; anterior extremity noticeably attenuated, posterior of increased size. Cuticle transversely striated. Mouth (fig. 256a) with 2 lateral lips, the median edge notched; each lip with a large lobe and 3 papillae. Dorsal and ventral lips tooth-like. Four large submedian papillae. Body with one lateral ala, moderately wide. Male 7 to 9 mm. long by 20(V wide. Caudal extremity (fig. 2566) semispiral; caudal alae moderately wide. Tail with 6 pairs of long pedunculated papillae, of which 4 pairs are preanal and 2 pairs post- anal; in addition a terminal group of 3 or 4 pairs of small ses?ile papillae and an unpaired papilla directly anterior to the cloacal aperture. Left spicule long, slender, alate, 2y2 times the length of the right, which is short and thick. Female 7 to 20 mm. long by 300 to 500/*. or more wide. Tail straight, short. Anus near the caudal apex. Vulva prominent, in posterior part of 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
