Westblad E 1948 (citation)- p 52, takes genus Otoceilis out of Convolutidae and makes separate family- on basis of vagina opening behind penis. Ax P 1959 (citation)- discussion of p 61-62 especially notes O. rubropunctata is from Mediterranean and Black Sea- his new species O. westbladi from norther areas. Dorjes J 1968 (citation)- p 100 definition of family. "Acoels with bursa seminalis and a more or less long vagina. This always behind the penis, either opening together with this or through a separate pore. Penis in most of the species inverted into the seminal vesicle. Eyes and bursal nozzle can be lacking." List of genera- Otocelis Diesing 1862 Haplocelis Dorjes 1968 Archocelis Dorjes 1968 Haplotestis Dorjes 1968 Notocelis Dorjes 1968 Philocelis Dorjes 1968 P 100-102 discussion and key to family, genera. 1. Bursal nozzle present--------------------------------------------2 1. Bursal nozzle lacking--------------------------------------------5 2. With 2 cellular sperm ducts. Penis enrolled in the seminal vesicle---Haplocelis 2. With cuticularized mouth opening--------------------------------3 3. Penis muscular, enrolled in the seminal vesicle-----------------------Otocelis 3. Penis formed from cuticularized needles or muscular, then not enrolled in the seminal vesicle--------------------------------------4 4. Penis form cuticular needles------------------------------------------Philocelis 4. Penis muscular not enrolled ------------------------------------------Notocelis 5. Colored green with large rhabdites. Reproductive opening teerminal to subterminal at the posterior end----------------------------Haplotestis 5. Uncolored. Medium sized rhabdites. Reproductive opening ventral-----Archocelis Karling TG 1974 (citation)- lists p 9. Crezee M 1975 (citation)- on bursa in p 842. Ehlers U, Doerjes J 1979 (citation)- p 30 list- also discussion p 48, and p 70.
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