![PDF] Hemipenis descriptions of Mastigodryas (Serpentes: Colubrinae) from northern Middle America, with comments on the use of hemipenial data in phylogenetics | Semantic Scholar PDF] Hemipenis descriptions of Mastigodryas (Serpentes: Colubrinae) from northern Middle America, with comments on the use of hemipenial data in phylogenetics | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/d09ef1a517015073caeba6c67f8b30bfada6d45b/2-Figure1-1.png)
PDF] Hemipenis descriptions of Mastigodryas (Serpentes: Colubrinae) from northern Middle America, with comments on the use of hemipenial data in phylogenetics | Semantic Scholar
![First Report of Hemipenial Variation among Some Genera and Species of Shieldtail Snakes (Serpentes: Uropeltidae) from India and Sri Lanka First Report of Hemipenial Variation among Some Genera and Species of Shieldtail Snakes (Serpentes: Uropeltidae) from India and Sri Lanka](https://bioone.org/ContentImages/Journals/cope.1/110/2/h2021024/graphic/img-z8-1_299.jpg)
First Report of Hemipenial Variation among Some Genera and Species of Shieldtail Snakes (Serpentes: Uropeltidae) from India and Sri Lanka
The Evolutionary Implications of Hemipenial Morphology of Rattlesnake Crotalus durissus terrificus (Laurent, 1768) (Serpentes: Viperidae: Crotalinae) | PLOS ONE
![Hemipenis of holotype of Oligodon culaochamensis sp. nov., ITBCZ 5646.... | Download Scientific Diagram Hemipenis of holotype of Oligodon culaochamensis sp. nov., ITBCZ 5646.... | Download Scientific Diagram](https://www.researchgate.net/publication/318109934/figure/fig3/AS:511996455469056@1499080875566/Hemipenis-of-holotype-of-Oligodon-culaochamensis-sp-nov-ITBCZ-5646-Top-everted.png)
Hemipenis of holotype of Oligodon culaochamensis sp. nov., ITBCZ 5646.... | Download Scientific Diagram
![Jan Freedman on Twitter: "It's similar mating of snakes and lizards, which have two penises (a hemipenis), where one penis is shut down and the other one works when mating. Here's a Jan Freedman on Twitter: "It's similar mating of snakes and lizards, which have two penises (a hemipenis), where one penis is shut down and the other one works when mating. Here's a](https://pbs.twimg.com/media/Dq31DnmX4AE-k0e.jpg)