(Pl. 4, fig. 6). Two large chelae of nearly equal size are simply drawn
and four rounded projections at the top of the figure appear to
represent the walking legs. Its rotund form and subequal chelae suggest
the land crab, _Geocarcinus_, but exact determination is of course
impossible. What is certainly a large crab, perhaps of the same species,
is shown in Tro-Cortesianus 88c (Pl. 36, fig. 1) in connection with a
dog whose feet it seems about to pinch with its two large chelae. The
shell is ornamented in a conventionalized way as if with scales.

ARACHNIDA

In Codex Borbonicus 9 (Pl. 4, fig. 4) there is represented a
stout-bodied form of spider with two sharply pointed chelicerae
projecting from the conventionalized mouth. These characteristics
together with the absence of any web, suggest a large predacious
species, probably the tarantula (_Tarantula_ sp.) which is common in
Mexico. The acute powers of observation shown by the artist are evinced
in this figure since he draws the spider correctly with eight legs
instead of the six or ten sometimes seen in drawings by our own
illustrators.

ARACHNOIDEA

The scorpion (Maya, _sinaan_) figures prominently in the
Tro-Cortesianus, two drawings from which are shown (Pl. 4, figs. 1, 2).
As here conventionalized, the jointed appendages are represented as
composed of an indefinite number of round segments. The large chelate
pedipalps are also prominently figured but the smaller walking legs are
commonly omitted. In Pl. 4, fig. 1, however, there is a pair of
posterior chelate appendages which are probably added to give a more
anthropoid cast to the figure. The slight projections along the sides of
the body in Pl. 4, fig. 2, probably do not represent the legs. In
another drawing (Tro-Cortesianus 44b) these are also present but further
reduced so as not to exceed the heavy fringe of spines surrounding the
body. In Pl. 4, fig. 1, the fringe alone appears. The formidable nature
of the scorpion is of course due to the poisonous sting at the tip of
the attenuated abdomen or "tail." In the Maya pictures this portion is
usually shown as a grasping organ. Thus in fig. 1 it is similar to the
chela and holds a cord by which a deer has been caught. In fig. 2 the
"tail" is terminated by a hand. The same thing is seen in
Tro-Cortesianus 44b where the hand seizes a cord by which a deer is
snared. The scorpion is represented in the drawings with a
conventionalized face that is very char