. Bulletin - United States National Museum. Science. THE FOSSIL STALK-EYED CRUSTACEA 91 near the lateral spines bears a few granules directed forward. Un- derlying surfaces are granulate, the granules thinning out toward the middle. The pterygostomian regions are swollen (pi. 22, fig. 2). The merus of the left outer maxilliped is fairly complete; it is rather short and broad with a deep inner groove; the outer margin of the exognath is very convex. The episternum is subcircular, broadly pointed at the extremity and invaginated in the first sternal somite from which it is separated By a narrow
. Bulletin - United States National Museum. Science. THE FOSSIL STALK-EYED CRUSTACEA 91 near the lateral spines bears a few granules directed forward. Un- derlying surfaces are granulate, the granules thinning out toward the middle. The pterygostomian regions are swollen (pi. 22, fig. 2). The merus of the left outer maxilliped is fairly complete; it is rather short and broad with a deep inner groove; the outer margin of the exognath is very convex. The episternum is subcircular, broadly pointed at the extremity and invaginated in the first sternal somite from which it is separated By a narrow fissure on each side. The first somite is characteristically broad, the lateral extremities have not been uncovered. Measurements.—Holotype, greatest width mm., fronto-orbital width about 25 mm.; hinder end of carapace missing. Occurrence.—California: West side of Tecuya Creek; southeast quarter of southeast quarter, section 26, township 10-20 west; Eocene series, very close to the type-locality of the Tejon formation; one specimen, holotype, in California Academy of Pig. 2.—Ranina Americana. Sternum (first and second segments) or larger speci- men, N. Pac. 167, X 3. Episternum after Withers RANINA AMERICANA Withers Plate 23, figs. 1^ Ranina americana Withers, Anii. Mag. Nat. Hist., ser. 9, vol. 14, 1924, p. 125, pi. 4, figs. 1-3; type-locality, Clallam Bay, south shore of Strait of Juan de Fuca, Washington; upper Oligocene, Blakeley formation, in a matrix of greenish grey sandstone; Brit. Mus., Cat. No. In. 23798. Description.—Viewed laterally the carapace is moderately convex in an antero-posterior direction, and equally convex on its anterior and posterior slopes; the convexity from side to side is much greater. Surface rough with scabrous granules, which are sparse and single on the anterior "middle portion, larger and closer posteriorly and toward the lateral and anterior borders where they have a tendency to form in short, transverse roAvs of
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