I have sawed one of these skulls in two along the sagittal suture.

In both sexes one of these abnormal bones is situated on each branch of the coronal suture, and the male possesses an additional one placed more anteriorly, and occupying the middle of the frontal suture.

Shell depressed, conical, pale reddish, ornamented with rows of white and brown spots, spirally grooved, ribs slightly granulated; the sutures distinct, impressed, the lower part of the last whorl nearly smooth, the umbilicus white, smooth inside, the edge furnished with a series of granules.

And about the ruins industrious research discovered the metal rings and charred coverings of two linen buttons, three shanked buttons entire, and one of that metallic sort which is used in the less conspicuous sutures of the human Oeconomy.

He regards the horns as constituting the principal generic character, they being formed by distinct bones, united to the frontal and parietal bones by a very obvious suture, and having throughout the same structure with the other bones.

A case less open to the objection of negative evidence, however, is that afforded by the Tetrabranchiate Cephalopoda, the forms of the shells and of the septal sutures exhibiting a certain increase of complexity in the newer genera.

In both sexes one of these abnormal bones is situated on each branch of the coronal suture, and the male possesses an additional one placed more anteriorly, and occupying the middle of the frontal suture.