. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 15. Hemipenis of Geodipsas zeny (MCZ 181161 [holotype]; specimen from near IVIidongy du Sud). Fully everted organ in sulcate (left) and asulcute (right) views. mately mm long (approximately 21% forked). The branches are broad open grooves bordered with spinules. The prox- imal undivided portion of the sulcus and the proximal portion of the forks is a closed canal formed by the appressed lips of the sulcus. The distal tips of the forks are open grooves that are somewhat flared and rounded distally (in form r
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 15. Hemipenis of Geodipsas zeny (MCZ 181161 [holotype]; specimen from near IVIidongy du Sud). Fully everted organ in sulcate (left) and asulcute (right) views. mately mm long (approximately 21% forked). The branches are broad open grooves bordered with spinules. The prox- imal undivided portion of the sulcus and the proximal portion of the forks is a closed canal formed by the appressed lips of the sulcus. The distal tips of the forks are open grooves that are somewhat flared and rounded distally (in form rather like elongate teardrops). To investigate the nature of the major retractor muscle, the contralateral everted organ of MCZ 181153 and a single everted organ each of MCZ 181154 and MCZ 181157 were incised. The retractor muscle is terminally divided at its internal attach- ment to the organ. The midsection of the sulcate and "lat- eral" sides bears a battery of moderately sized hooked spines, approximately 15-20 on each side, that increase gradually in size from the sulcate toward the asulcate side. Scattered among these spines are minute hooked spines that are clearly visible only under high magnification. The spines grade into long, narrow spinules, which densely cover the tip of the organ begin- ning slightly proximal to the level at which the sulcus forks. The distal spinules are longer than proximal ones. The base of the organ below the spinous midsection is largely nude, but minute spinules border the proximal portion of the sulcus sper- maticus. The midsection of the asulcate side bears two longitudinal rows of greatly en- larged, hooked spines, the rows slightly di- verging and each having four spines. With- in each row the two proximal spines are the largest, the third is somewhat smaller, and the distal spine is about Vz the size of the third. The distal spine is approximately the same size as the adjacent spines of the battery extending from the sulcate
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Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
