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Clicking on a marker will show information available about the collection site. (Compare with corresponding letter in table.)
| site | collection date | depth | substrate | salin | locality kind | comments | reference | |
|---|---|---|---|---|---|---|---|---|
| A | Puerto Penasco (Punta Penasca), Sonora, Estado de Mexico, Mexico | Dec, 1947 | type locality | 7 specimens, taken by the MacGinities beneath rocks on a rocky point. "brown flatworm, over two inches in length". | Hyman LH (1953) 365 |