TRANSACTIONS OF WAGNER 

 I 324 



^ ^ TERTIARY FAUNA OF FLORIDA 



and are reported from the Tertiaries of south Europe since the Eocene. Eu- 

 tapes and Callistotapes are synonymous. 



Section Papliia Bolten s. s. {znde supra). 



Section Baroda StoHczka. 1S71. Type Venus fragilis Orbigny. Cre- 

 taceous. 

 Valves elongate, thin, with purely concentric sculpture, the posterior car- 

 dinals elongated, sometimes grooved, the others simple ; the pallial sinus ample, 

 rounded in front, horizontally directed ; margins entire. 



This form appears to be the-Mesozoic precursor of Paphia. The Tertiary 

 Taurotapes Craveri (Michelotti) Sacco seems to be hardly differentiable from 

 Baroda, judging by Sacco's very obscure figures. 



Section Icanotia Stoliczka, 1871. Type Psainmobia iiupar Zittel, Gosau. 

 This is stated to differ from Baroda only by the presence of more or less 

 radial sculpture. 



Section Paratapes Stoliczka, 1871. Type Venus textile Gmelin. 



Valves elongate, turgid, smooth, or with feeble concentric sulci ; lunule 

 circumscribed, narrow ; escutcheon undefined ; middle cardinals bifid, as in 

 Paphia; inner margins entire : pallial sinus obliquely ascending, small, squarish 

 anteriorly. 



This is Textrix Romer, 1857, not Sundeval, 1833. 



Section Protapes Dall, 1902. Type Venus gallus Gmelin (-|- malabarica 

 Dillwyn). 

 Valves trigonal, closely concentrically ribbed, with no radial sculpture, a 

 vernicose periostracum, a large, elongate, impressed lunule, no differentiated 

 escutcheon, smooth inner margins, and an ample, obliquely ascending pallial 

 sinus, rounded anteriorly ; the two anterior and left posterior cardinals entire, 

 the others bifid ; all the teeth short and concentrated. 

 This is PuUastra Chenu, 1862 ; not of Sowerby, 1826. 



Subgenus Tapes Megerle, 181 1. Type Venus literata Linne. 



Valves oblong, subcompressed, vertically expanded and subangular on the 

 posterior dorsal margin ; lunule circumscribed by an incised line, the escutcheon 

 defined by a carina, both long and narrow ; surface concentrically grooved ; 

 internal margins smooth ; pallial sinus ample, horizontal, free below, rounded 

 in front ; the posterior right and two anterior left cardinals bifid or grooved ; 

 colors lively, often with a lineated pattern of darker tint on a pale ground. 



