of the eyes, and the subcircular outline of the preabdomen. Laurie properly compares his Eurypterus scoticus with Eusarcus scorpionis Grote & Pitt. It has the outline of body and the limbs of an Eusarcus. Further, the imperfectly known Eurypterus acrocephalus Semper (1898), a Bohemian form, belongs here. Its subtriangular carapace which gave the species its name and the broad, abruptly contracted preabdomen warrant this reference and Semper has correctly
 Figure 52 Metastoma of Eusarcus punctatus Salter. Natural size. (From Woodward |
 Figure 53 Eusarcus obesus (H. Woodward). Natural size. (From Woodward) |
pointed out the similarity of its species to E. scorpionis and E. scorpioides. Finally the Stylonurus (?) simonsoni Schmidt is distinctly an Eusarcus, as we have set forth in the appended footnote.[1]
- ↑ This species was originally described as Eurypterus simonsoni and later referred with doubt to Stylonurus, the author stating that he believes the form to represent a new genus closely related to Stylonurus. The latter reference is based on the surface sculpture and the similarity of a detached part to the long last leg of Stylonurus. The specimen shows the metastoma which, as Schmidt remarks, differs from all other metastomas. In its triangular, pear-shaped outline it agrees completely with that of Eusarcus. The sculpture, also, consisting of disklike prominences with raised
