. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 228 Bulletin Museum of Comparative Zoology, Vol. 158, No. 5. Figure 24. Hemipenis of Sibynomorphus petersi in sulcate view (KU 142804). Total length of the organ is approximately 13 mm. Length of the capitulum on the sulcate side approximately 7 mm. The sul- cus spermaticus divides within the capit- ulum and has more or less centrolineal branches, but each branch ultimately pass- es somewhat laterally to end at the outer (lateral) periphery of the tip of the organ. Proximally, the hemipenis has minute spines


. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 228 Bulletin Museum of Comparative Zoology, Vol. 158, No. 5. Figure 24. Hemipenis of Sibynomorphus petersi in sulcate view (KU 142804). Total length of the organ is approximately 13 mm. Length of the capitulum on the sulcate side approximately 7 mm. The sul- cus spermaticus divides within the capit- ulum and has more or less centrolineal branches, but each branch ultimately pass- es somewhat laterally to end at the outer (lateral) periphery of the tip of the organ. Proximally, the hemipenis has minute spines all over, although these are sparse, especially on the asulcate side. A battery comprising about three rows of enlarged hooked spines completely encircles the midsection of the organ just proximal to the capitulum. These spines are larger ad- jacent to the sulcus spermaticus than on the asulcate side. The capitulum is completely ornament- ed with papillate calyces. Calyces are well developed, but proximally, the longitudinal connections between them tend to break down so as to give the appearance of weakly developed, but densely arrayed, flounces. The calyces are surmounted by large blunt papillae. Because the proximal calyces tend to be poorly formed, there is the appearance of about three rows of pa- pillae (or papillate flounces) encircling the base of the capitulum. Probing with a fine needle suggests that these proximal papil- lae might be somewhat mineralized. A very large nude pocket ( mm long) is present on the lateral side of the organ (, midway between the sulcate and asul- cate surfaces); it extends from the very base of the organ to the battery of spines on the midsection. The pocket has thick- ened borders, which are especially prom- inent at the middle of the pocket. A small, but distinct, fleshy lobe is present on the asulcate side of the pocket slightly more distal than its midpoint. Distally, the pock- et is bordered by two large hooked spines on one sid


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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology