Page:Eurypterids of the Devonian Holland Quarry Shale of Ohio.djvu/17

 {| width="700px" align="center" . 46. Paddle of swimming leg of Dolichopterus asperatus, n. sp., paratype, PE5115. Shading indicates preserved patches of test. Ruled line, one centimeter.
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 * width="240px" | . 47. Distal end of paddle of swimming leg of Dolichopterus asperatus, n. sp., paratype, PE5116. Shading indicates preserved patches of test. Ruled line, one centimeter.
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The prosoma is paraboloidal, very wide, straight along the base, and bordered with a wide marginal rim. The ventral shield is very narrow and band-like, and without sutures. The compound eyes, located slightly behind midsection, are crescentic, small, and close-set. The ocellar mound is located opposite the anterior part of the compound eyes. Ornamentation comprises large wart-like pustules, elongated and pointed at the margins.

Type species: Syntomopterus richardsoni, new species.

Remarks.—Syntomopterus differs greatly from other genera of the Stylonuridae. In some respects, particularly in the form of the