Dr C. Vogt on (he Animalcules of the Bed Snojv, 24X 



animal ; sometimes two bodies of equal size, of which one is 

 red and carapaced, and the other quite colourless, adhere by 

 a very narrow point of attachment. By degrees this bud com- 

 pletely detaches itself from the parent body, and appears under 

 the form of a colourless infusory animal, such as Shuttleworth 

 has represented in his 7th and 8th fig., which approaches to Pan- 

 dori?ia hj/alina^'Ehv. I could not discover in these offsets anything 

 beyond that which Mr Shuttleworth has already seen ; they 

 are perfectly motionless; their contents, apparently ^reyj?«^, be- 

 come coloured by degrees from green to yellow, orange, and 

 even a deep red, whilst the covering remains colourless, and 

 is converted into a carapace. It is at this point only that the 

 motions of the animal become visible. I had the good for- 

 tune to observe, and to be able to make drawings of, the va- 

 rious grades of this mode of reproduction ; and I am convinced 

 that this animal, far from belonging to the genus Gyges^ on 

 the contrary, ought not only to be looked upon as the type of 

 a new genus, but, still further, to constitute a family, on ac- 

 count of its very peculiar mode of reproduction and develop- 

 ment. 



3. I place in the genus Gyges of Ehrenberg another infuso- 

 ria, of an equally remarkable form, w4iich does not appear to 

 have been observed by Mr Shuttleworth. In the red snow 

 may be occasionally seen globular organisms, containing in 

 their interior from two to five individuals, enclosed in a cara- 

 pace apparently of a vitreous character. The colour of these 

 animals, thus living in the same case, is. of a dark red ; they 

 frequently adhere one to the other, and arrange themselves in 

 the form of a cross ; they are also frequently separate. The 

 small individuals, probably the young, were of a clear yellow 

 hue ; I could not observe the slightest motion in them. 



4. An infusoria of the family of Bacillaria. It is very abun- 

 dant in the red snow, and is the smallest of all the kinds I 

 have met with. We frequently saw two of them adhering to- 

 gether, and ready to separate. Their colour is yellowish- 

 brown. With the exception of a few bright spots in their an- 

 terior, I could not distinguish their structure, neither could \ 

 detect the slightest motion. 



5. A species of Aretiscon^ having two hooks to the. feet. 



