Observations on the Hirudo complanata, and Hirudo stagnalis : now formed into a distinct genus under the name, Glossopora / by Dr. Johnson.

  • Johnson, James Rawlins, -1840.
Date:
1817
Catalogue details

Licence: Public Domain Mark

Credit: Observations on the Hirudo complanata, and Hirudo stagnalis : now formed into a distinct genus under the name, Glossopora / by Dr. Johnson. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    OBSERVATIONS, $c. Read before the ROYAL SOCIETY, June 26, 1817. I beg leave to lay before the Society, a few remarks on the Hirudo complanata and Hirudo stagnalis; animals that have been hitherto but injudiciously, retained in the genus Hirudo. From the circumstance, in which they differ more parti- cularly from the leech, they are now formed into a distinct genus, under the term of Glossopora. These animals resemble the leech, a. In the body being furnished with a series of rings. b. In locomotion being effected by the alternate attach- ment of the head and tail. c. In the division of one general stomach into several late- ral cells or partitions. These animals differ from the leech, a. In the mouth being furnished with a projectile tubular tongue. b. In the body being nearly flattened, and pyriform. c. In having an abdominal pouch, or cavity, for the recep- tion of their young. The genus which they now form, takes the name (from yXoWa, a tongue, and 7ropos, an aperture) of Glossopora.