Part II - State of New Jersey

164 CRETILCEOUS FOSSILSRathbun (1935, p. 48, pl. 11, figs. 26-28) from the Pawpaw clay ofTexas.The holotype is a right palm with the dactylus in place. Two leftpalms which lack locality data were also examined. The outer surfaceof the holotype shows a large tubercle just below the middle of thcupper margin. This tubercle is not present on thc other palms.Named for Charles Dilks, xvho collected the holotype an11 kindlysubmitted it for study.Distribution in Xelu Jersey.-3Iercl1antville formation: 3IaplcShade (type locality).IIo/~type.-~kNSP 19728.Genus Totracarcinzcs \tT'eller, 1905Tetracarcinus subquadratus T17ellerPlate 87, Figures 3-6Tetracareinus subquadratus Weller, 1!)05, p. 136, pl. 1.5, figs. 4-6:- 1905a, p. 328, text-figs. 4-6.Tetraearcinns subquadratzrs, Weller, 1907, p. 852, 1'1. 111, figs. lfi-19.Tetracarcin.tis subqziadratus, Rathbun, 1.935, p. 41, pl. 10, figs. 1.6: 1'7(non fig. 18).Dalioticuncer overana, Rathbun (part), 19:i5: p. 40; non 1917, p. 386,pl. 32; pl. 33, figs. 6-14.Description.-"Carapace subquaclrang~~lar, length and breadtl~nearly cqnal. 1)imcnsions of tlr-o i~r~lividuals are: length, 12.3 mm. and14.4 mm. ; breadth, 12.5 nlm., and I4 mm. DorsaI surface convex longitudinallyand transversely, the sides curving abruptly dolmward to ;Inearly vertical position, marlzcd by two longitudinal and two transversefurrows. Rostrum short with a deep, longitndinal median fl~rrow. Extendingbackward from the posterior extremity of the median fnrronof the rostrum, the two longitudinal dorsal furrolvs diverge from theiranterior point of origin to the junction with the nntcrior transverse:furrow and then converge until they nearly meet again at the posteriormargin of the carapace? enclosing a longitudinal, median ;area n,hich isnot crossed I)? the anterior transverse furrow, and across which the1)osterior transvrrs~: f~~rrow is less strongly defined than in its l;~terallimbs. The lateral limbs of the t,ransverse furrolr-s become less ~r-elldefined to\rarrls the margin of the carapace. The anterior ones cnrvesligl~tly haek\r-ard toward t,heir distal extremities, ~vhile the posteriorones hare a slight for~vard cnrve: so th:~t the trvo together, with thelongitudinal furrows: enclose a pair of slightly convex, subovate areas.From the anter.olateral margins of each of these subovate areas, twoslight, gently curved tubcrculose ridges or lines of tubercles extendforward, diverging slightly, to the antcrolateral margins of the carapace."(Weller, 1907).NEW JERSEY GEOLOGICAL SURVEY