. Biological survey of the Mount Desert Region. Natural history -- Maine Mount Desert Island. THE MOUNT DESERT REGION. Fig. 2 Sphaeronella pilosa Fig. 3 Sphaerouella photidis. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Procter, William, 1872-1951; Mount Desert Island Biological Laboratory; Johnson, Charles Willison, 1863-1932; Blake, Charles Henry, 1901-. Philadelphia, The Wistar Institute of Anatomy and Biology

---

Size: 1462px × 1709px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1920, bookpublisherphiladelphiathewis