940 Marvels of the Universe 
creatures under the same conditions have their eyes enormously enlarged, apparently that they may 
receive as large a share as possible of the weak light available. It is characteristic of many of the 
blind creatures of the deep sea that they are provided with very long feelers and hair-like appendages 
of a highly sensitive nature, by means of which they appear to feel their way about, as Professor 
Moseley puts it, “‘ Just as a blind man does with the aid of his stick.” 
The light that does exist in these depths below five hundred fathoms is not the light of day, but 
a phosphorescence or luminosity such as we are accustomed to see at the surface occasionally. We 
have already shown in this work a number of the deep-sea fishes that possess luminous organs ; but 
_ some of the crustaceans are equally 
luminous, size for size. Among 
| them are a number of shrimps and 
prawns which, unfortunately, have 
no English names by which one can 
refer to them separately. Although 
living in darkness or semi-darkness, 
where colours cannot be distin- 
guished, many of these are of 
beautiful rosy or green tints, in 
which they differ greatly from the 
deep-sea fishes, which are mostly 
black. 
One of these prawns has 
prominences on one pair of the 
foot-jaws which are luminous ; 
others have a special development 
of the base of the antenne, render- 
ing it phosphorescent. These 
creatures, therefore, go through the 
deep waters much like a motor- 
car on land, shedding a light be- 
fore them on their path. One 
family contains so many luminous 
species that it has been given a 
Greek name signifying “ a bright 
light.” 
Of this family several genera are 
The represented in British waters, the 
HONEY-GALLS. species having luminous globules 
A twig of the Oak showing the galls, which exude droplets of a sweet and present on various parts of their 
viscid fluid. This is collected by the workers of the Honey Ants and stored in bodies. The two species of prawn 
figured on page 939 are from 
deep water in the Indian seas, and although they represent different families, they agree in 
producing their luminosity from the base of the antenne. 
the living honey-pots which form a part of the ant community. 
TINNITUS ANS slQUIN EWS OIUS ~ 
BY H. ST. J. K. DONISTHORPE, F.Z.S. 
THE true Honey Ants live in Mexico and the south-western of the United States and have long 
been esteemed as an article of food by the Indians. The best known species is the Honey Ant of 
the Garden of the Gods, a place near Manitou in Colorado. 
