Part II - State of New Jersey

ears a line of prominent sockets. Lateral margins of the otherwisesmooth occludent surface beaded. JVrist shorter and higher than themajor wrist.Neasurements: length of propodus 25.1 mm., length of palm 19mm., hcight of palm 12.3 mm., thickness 6.4 mm. (ANSP 19669, figuredsyntype) ;length of propo~los 22.7 mm., length of palm l5.G mm. heightof palm 13.4 mm. thickness 6.2 mm. (YPM 126) ; length of palm 20mm., length of wrist 17.5 mm. length of arm 13 mm. (WFIS 10095).Remarks.-ProtocalLianassa mortoni is the commonest Upper Cretaceousdecapod in Xeu~ Jersey. The palms vary considerably in snrfacetexture, number and arrangement of tlie papillae and sockets andin the ratio of the length to the height. Dccort,icated specimens maylook quite different from those retaining either the inner or the outerlayer of the integument.In spite of these differences, two races of the species can be dist,inguished: race a-height to length ratio varies from 1 :1.32 to 1 :1.62for major palms, and from 1 :1.1 to 1 :1.28 for minor palms; race b-rat,io for major palms is 1 :1.19 to 1 :1.25, and 1 :1.35 to 1 :1.48 for minorpalms. Race a is the commoncr of the two, at least in New Jersey whereit is particularly ahundant in the JIerchantrille formation. The syntypehands described by Pilsbry (1001, pl. 1, figs. 1-4, 8-10) belong torace a. Sixteen of tlie 442 New Jersey and Dclalvare specimens studiedby tlie writer are race b indivirluals, as are the following:1) broad palms from A'e~r. Jersey, Delaware and Maryland citedby Pilsbry (1916, p. 365) ;2) bolotype of Cnlliai~assa. clnrki Pilsbry (1916, p. 368, p1. 11,fig. 8) ;3) specimens figured by Rathbun (192fi> p1. 67, figs. 1, 4-9) fromCoon Creek beds in Tennessee.Both races range from Aferchantville age to Tinton age. Although raceb hands are rare in Xelv Jersey and Delaware, to the south in Tenncsseeand Tvfississippi they appear to be the predominant form.Rathbun's (1935, p. 30) record of this species in the Woodburyclay at Lorillard is based 011 an indeterminable impression of a smallhand (NJ St. 11 No. 9511).The figured type of Callin~lassa eonrndi Pilsbry is in the collectionof the Wagner Free Institute of Science (No. 5478W), not in the NewJersey State Mnsenm as reported by Rathhun, 1935, p. 30.Distribution in ATew .Jersey.-3rerchantviIle formation: Bordentown(12a), Lenola (l5), lfaple Shade (16). lT1enonah formation:Cramford's Corner (34), Marlboro (35). Aft. Lanrel/Navesink formation:Atlantic Highlands (37) ; Bruere's Pit, S. of TValnford; CreamRidge (45) ; Afiddletown (Crcdner, 1870, p. 242) ; Afnllica Hill (53) ;near New Egypt (48). Tinton formation: Beers Hill (62), TintonFalls (63).NEW JERSEY GEOLOGICAL SURVEY