48 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I45 



Occurrence. — Caloosahatchee formation, loc. 2, 3, 4, 6. 

 Types. — Holotype, U.S.N.M. 648160, loc. 6; figured specimen, 

 U.S.N.M. 648161, loc. 6. 



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• « • 

 «. ..• 



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Fig. 46. — Rhyncholampas ayrcsi Kier, new species : Floscelle of U.S.N.M. 

 648161, from the Caloosahatchee formation, loc. 6, X 5. 



RHYNCHOLAMPAS EVERGLADENSIS (Mansfield) 



Plate 17, figures 1-5; text figures 42, 47-50 



Cassidulus (Rhynchopygus ?) evergladensis Mansfield, 1932, U. S. Geol. Surv. 



Prof. Paper 170, p. 48, pi. 18, figs. 1-10. 

 Cassidulus (Cassidulus) evergladensis Mansfield. Cooke, 1942, Journ. Paleont. 



vol. 16, no. 1, p. 30, pi. 8, figs. 5, 6. 

 Cassidulus sabistonensis Cooke, 1959, U. S. Geol. Surv. Prof. Paper 321, p. 57 



(in part) ; not Cassidulus sabistonensis Kellum. 



Diagnosis. — Species characterized by angular marginal outline, 

 gently sloping sides, depressed adoral surface, wide naked zone in 

 interambulacrum 5, and wide phyllode III. 



Material. — One hundred and one specimens. 



Shape. — Large, varying from 35 to 97 mm in length ; width fairly 

 constant, usually approximately 83 per cent of length (text fig. 47) ; 



