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50 [[preprinted]] SMITHSONIAN INSTITUTION UNITED STATES NATIONAL MUSEUM. [[line]] [[/preprinted]] Mesoleras [[line across page]] PAPS [[boxed]] 1873. pl. 4. fig. 1. [[/boxed]] Regnopsis 1896. 145 pl. 12. fig 5 [[line across page]] Pachycetus Bull. Acad Belg. 6. 1883. 27
Transcription Notes:
"PAPS" refers to the Proceedings of the American Philosophical Society, which is where the specimen was published in 1873.
Regnopsis is misspelling of Rhegnopsis (found in BHL digitized copy of Proceedings referenced). -megshu