The shield was perfectly air-coloured and diaphanous, and extended for some distance beyond the head and the upper parts of the body; the body itself was of a pale delicate blue, and it threw a very light bluish tinge upon the shield; the eyes were jet black, and placed at the end of a tube like those of the lobster; the tip of the spear was of a light red colour. Caught also this day the lower portion of a species of Diphyes, the same I had found on the 13th of November 1837 in south latitude 30 degrees 7; east longitude 100 degrees 50 minutes 10 seconds. The total length of this was 0.5 inches.
Caught also two minute animals resembling a species of shrimp (Penaeus); colour of both pale blue. The tail of the largest when examined in a microscope precisely resembled in appearance the fin of a fish. I did not examine the smaller one. Dimensions of the largest:
Total length 0.2 inches.
Length of feelers 0.15 inches.
Of smallest:
Total length 0.13 inches.
When put into eau-de-cologne these animals changed to a pink colour.
June 17. South latitude 29 degrees 19 minutes; east longitude 40 degrees 19 minutes.
3. Glaucus, Sp.