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.