The length of the anterior legs is about 1.5-1.7 times that of the posterior pair.

Both pairs of chin-shields in contact, or posterior pair separated by one scale.

Two pairs of chin shields, the anterior pair longer than the posterior pair.

The front pair of nostrils are far smaller in size than the posterior pair.

The genital openings are on the second segment of the posterior pair of legs.

The male had four horns, the posterior pair being large and branched.

Chin shields very small, the posterior pair separated by scales.

At the corners of the case, there are four blunt, broad horns with the posterior pair being slightly longer.

The posterior pair of the openings was then free to form the lacrimal duct if a migration caused them to come in contact with the eyes.

The male opercula are rather short and generally do not reach beyond the posterior pair of tubercles.