rked with concentric striae, which
indicate the lines of its growth; in some this cartilage is transparent,
in others quite blue.

November 12. South latitude 30 degrees 11; east longitude 100 degrees 31
minutes 30 seconds.

We caught several beautiful animals this day, of the Medusae kind
(Diphya). (See Illustration 3 Diphya, Sp.)

Figure 1 represents a section through one of them, the size of life: the
bag (1) is of a delicate bright amber colour. The long tentacula issuing
out are upwards of a foot in length and of a bright flesh colour.

(Illustration 3)

Figure 2 is a section across the animal.

Figure 3 represents the mouth of the large opening at c, d, as if one was
looking down into it.

Figure 4 upper part; Figure 5 lower; and Figure 6 the perfect animal.

Between c d apparently lay the entrance to its mouth; in the little bag
marked (3) its long tentacula were concealed, and below these lay a
little gut marked (4) which communicated with the point (L) by a small
canal: (1) was its swimming apparatus, and by alternate contractions and
expansions of this, it took in and expelled water, and thus acquired a
rapid motion, the pointed end (L) moving forwards.

Its length was 1.7 inches.
Breadth, 0.7 inches.
Thickness, 0.35 inches.
Temperature the same as the water, 65 degrees Fahrenheit.

The sketch Illustration 4 Diphya, Sp. gives a faint idea of the most
beautiful animal of this kind which I have ever seen. It was so delicate
that, with the slightest touch, portions of it came off, hence the
specimen we obtained is I fear useless. The body consisted only of a
central canal, to which were attached a number of gelatinous bags, with
large lateral openings, so large that other zoophytes were caught in
them, and apparently annoyed the animal; who continued throwing water out
until it expelled them. The whole was surmounted by a number of the most
beautiful rose-coloured tentacula: I counted eleven on it, and found four
more that were torn off, but there may have been more. Its top, when
looked into closely, resembled some of the sea anemones; and inside of
the large bright orange-coloured tentacula were placed circular rows of
smaller ones. Its body was quite transparent, with the exception of the
central canal, which was of a milk-white colour, and terminated in a
small sac of the same hue.

It moved in a direction opposite to the tentacula, by taking in water at
the lateral openings of the bags, in the