Scarabæus major niger tricornis, _Sloane Jamaica, vol._ 2. _t._ 237. _f._
4. 5.
The Great Brown Sawyer, _Brown's Jamaica, p._ 428. _t._ 43. _f._ 6.
HABITAT: Jamaica.
_Male._ Head black. Antennæ dark brown. Thorax black, smooth, and
shining, and armed with three horns; two of which, being about one-third
of an inch in length, are placed on the upper part on each side, lying
almost parallel with the body. Beneath these, near the head, rises
another from the middle of the thorax, which is a little longer than the
two first, bending upwards, and forked at the extremity. Elytra rather
rough and furrowed, but shining and black. Tibiæ armed with spines,
especially at the extremity, which facilitate the animal in its passage.
Abdomen black; anus with a row of light brown hairs.
_Female._ Differs from the male chiefly in the thorax, which is entirely
unarmed. Black and shining, but rather less so than the males; and in the
front, just above the head, is a small impression. All the under parts of
the insect which in the males are black, in this sex are of a dark
reddish brown. In other circumstances it resembles the male.