From measurements taken from the living animal the dimensions were: Length from tip of tail to tip of spine, in front of head 1.15 inches.
Ditto of spine 0.23 inches.
Ditto from tip of tail to bottom of last scale 0.2 inches.
Ditto from tip of spear to end of shield 0.7 inches.
The temperature of the water at 6 P.M.was 71 degrees Fahrenheit; of the air 74 degrees.
(*Footnote.

See Illustration 8 volume 1.) 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.