Part II - State of New Jersey

spine is the shorter and slenderer. i\lonthfield about two-fifths as longas t,he carapace.None of the specimens shows the outer (3rd) maxillipeds. However,t,he inner maxillipeds, presumably the 2nd pair, are pediform and atleast six times longer than wide. A deep longitudinal furrow bisects thexubhepatic field of which each half is transversely convex and bears anirregular row of large granules along the crest of the convexity. Outerlayer of the integlnnent paved with small contiguous polygonal plates;inner layers of the integument studded with round flat-topped granrileswhich are slightly more than their diameter apart. Posterior andlateral margins of carapace, and the proximal slopes of the lateralspines, finely beaded.The large orbits, the median position of the muscle-sears, the shortmouthfield, and the strong development of t,lle frontal lobes requirethat this species be placed in the genus ATotopocorystes.Distribq~tioit ill h'ew Jersey.-Navesinklands.formation: Atlantic High-Ot~tsidc ~1islriba.tion.-Tennessee: Riplcy formation. Mississippi:Ripley formation.T!jpes.-1JSNM73121 (Coon Creek, Tennessee, type locality).Genus Raninella lfilne Edwards, 1862Raninella tridens Roberts n. sp.Plate 88, Figures 5, 6Description.-Carapace obovi~te; strongly arched from side to side;greatest width and the highest point on the dorsal surface at the distalthird. Immediately in front of this high point, on the dorsal surfaceof the carapace and extending forward to the orbital borders, there is amedian triangular facet which points postad. Running backward fromthe high point, there is a low median convexity which dies out in thccardiac field. Front two-thirds as wide as the carapace and almosttransverse exterior to the rostrum. Rostrum triangular; excavateddorsally, the middle of the excavation occupied by a short longitudinalridge. Tip of rostrum bluntly rounded and curved slightly downward.Orbit about one-fifth the width of the front; subcircular; directed obliquelyoutward and upward, its upper and lower margins each piercedhy a closed fissure. Anterolateral teeth three, including the outer orbitaltooth. The teeth are triangular in dorsal profile, moderately compresseddorsoventrally. with s~~bmncronate tips. First toot11 larger andless compressed than the others, pointed obliquely forward, acute butnearly equilateral and separated from the second tooth by a broadlyU-shaped sinus. Second tooth broad and low, inclined slightly forward,smaller than the third tooth and situated midway between the latterNEW JERSEY GEOLOGICAL SURVEY