ART. 15 A NEW FOSSTT. CRAB FROM FLORIDA RATHBUN 3 



Pamtype d. — Chelipeds stout, siiuilai-. iincciiial. Mcnis nearly as 

 wide as its greatest len«i-tli. smooth, lar«>Lly iiiolllcd willi short trans- 

 verse color marks. Carpus covered with low squamose tubercles. 

 Propodus increasing- in liciaht from proximal to distal end: lower 

 margin nearly straight, slightly sinuous; upijcr margin arcuate: (Uiter 

 surface very convex transversely, inner surface less so. Outer sur- 

 face, except in the lower part, rough with tubercles arranged largely 

 in longitudinal rows, and with their acute tii)s pointing distad. A 

 short deep transverse furrow outside, ojjjiosite tlie articulation of the 

 dactylus. Fingers stout, comi)resse(l. meeting when closed, tips acute ; 

 l^rehensile edges subacute and furnished with a feAV low tubercles. 

 Propodal finger bluntly carinate, with two longitudinal rows of 

 tubercles and punctae outside; dactylus (paratype e) with four rows 

 of tubercles on the upper half, two close together above, one on inner 

 surface, the other on outer surface. 



Measut'emeufs. — Holotype (sex unknown), total length of carapace 

 74, width of same 108, fronto-orbital width 52, width of orbit 5.7, 

 width between orbits 40.G, width of front exclusive of orbital tooth 

 32.5 mm. Paratype c/, length of major propodus about 72, greatest 

 height of same 35, length of dactylus above 39.3, below 28.5 mm. 



Occurrence. — Florida ; Eocene series : 



Clark, Alachua County; nummulitic limestone 50 feet below the 

 surface; " Vicksburgian "; 1896; L. ^L Everett, United States Geo- 

 logical Survey; one carapace, dorsal view; paratype c\ Cat. Xo. 

 137871, Ignited States National Museum. 



Hales Siding, 5 miles east of Xewberry, Alachua County ; in quarry 

 of Ocala Road Material Corporation; depth, 35 feet from top of 

 Ocala limestone: Thomas Sexton, collector; donated to Florida State 

 Geological Survey by A. T. Thomas; one pair of chelipeds; 

 paratype d. 



About 2 miles north of Williston, Levy County; in quarry of 

 Thompson "Williston Co.; 30 feet from surface; Ocala limestone; 

 July 6, 1928; G. M. Ponton, Florida State Geological Survey; one 

 specimen very incomplete, lacking the dorsal surface of the carapace; 

 paratype /. 



One mile south of Williston. Levy County; in quarry of Ocala- 

 Tampa Lime Rock Co. ; Ocala limestone, 30 feet below surface ; Oc- 

 tober 3, 1928; H. Gunter and G. M. Ponton. Florida State Geologi- 

 cal Survey; parts of three specimens: paratypes /, f/, and h. 



Ocala, Marion County: 1891; J. Kort. United States Geological 

 Survey; one chela, incomplete, showing part of palm and dactylus; 

 ])aratype e; Cat. No. 370957. United States National Museum. 



Southwest City Limits, Ocala, Marion County; in ])it of Florida 

 Lime Co.; procured from S. Phillips, Janiun-y. 1917: submitted by 

 Florida State Geoloaical Survev. thiouoh Dr. E. H. Sellards; one 



