. Animal life as affected by the natural conditions of existence. Animal ecology. Fig. 100. - Periophthalmus Kotlreuteri, a fish which pursues Onchidium—a land mollusc- 011 the sea-shore. The large ventral Bus serve for a forward leap. seem to be perfectly defenceless against their pursuers. Still, it would certainly be very strange that such eyes should be deve- loped here, and only in this particular genus, without being qualified to be of any real advantage to them, since they cer- tainly cannot require eyes on their back—useful, no doubt, for looking up to heaven, but quite useless for loo
. Animal life as affected by the natural conditions of existence. Animal ecology. Fig. 100. - Periophthalmus Kotlreuteri, a fish which pursues Onchidium—a land mollusc- 011 the sea-shore. The large ventral Bus serve for a forward leap. seem to be perfectly defenceless against their pursuers. Still, it would certainly be very strange that such eyes should be deve- loped here, and only in this particular genus, without being qualified to be of any real advantage to them, since they cer- tainly cannot require eyes on their back—useful, no doubt, for looking up to heaven, but quite useless for looking down on earth—in order to find their food, which lies close before them in the sand under their mouth. Hence, if these eyes were in fact to be of some service to the mollusc, it must have been also provided with some sort of weap ais, and in point of fact such weapons do exist in every species that has such eyes. The skin of the back is very thickly set with minute glands, of which the contents are not perfectly. 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 Semper, C. (Carl), 1832-1893. New York, D. Appleton and Co.
Size: 1498px × 1668px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublishernewyo, bookyear1881
