72 Bulletin 34 104 



250, pi. 10, f. I, i', 1S52. Not Artetfiis tenuis Sowerby, 

 1852. 



Cyclina tenuis Beau, Cat. Coq. Guadeloupe, p. 24, '58. 



Mysia tenuis Dall and Simpson, 1901. 



Lucinopsis kroyeri Poulsen, '78, (not of Philippi); gundlachi 

 Duuker, '78 ; tenids Dall, Bull. 37, p. 56, '89. 



Cyclinella tenuis Dall, Tr. W. I. S., p. 1285, 1903. 

 Distribution. — Florida to Sao Paulo, Brazil, 0-8 fms. Pliocene 

 to Recent. Gulf coast. — -Texas and Cedar Ke5^s, Fla. 

 Pliocene : Caloosahatchie. Type locality Pointe — a- 

 Petre, Guadeloupe. 



Genus CHIONE Megerle 

 cancetlata Linnaeus, Syst. Nat., ed. XII, p. 1130, 1767, (as 

 Venus); Sowerby, Thes. Conch., 2, p. 710, pi. 54, f. 28- 

 31, 1853 ; Hilgard, Rept. Chief of Engineers to Sec. of 

 War, p. 358, '70; Dall, Bull. 37, U. S. N. M., p. 54, '89; 

 Singley, 4th Ann. Rept. Tex., p. 327, 1892 ; Vanatta, 

 Proc. A. N. S. Phila., 55, p. 757, 1903; Mitchell, List 

 Tex. Sh. 



Chione cancel lata Holmes, Post-Pl. Fos. S. C, p. 35, pi. 6, f. 

 14, '60 ; Hilgard, House of Rep. Ex. Doc. i, pt. 2, p. 887, 

 '78 ; Harris, Bull. Am. Pal. i. No. 3, p. 92, '95; Dall, 

 Tr. W. I. S., 3, p. 1290, 1903 ; Vaughan, 2d Ann. Rept. 

 Fla. Surv., p. 148, 1909. 



Venus cigeyida Dillwyn, Cat. Rec Shells, p. 161, 1817. 



elevataSdiy, Jour. Acad. Nat. Sci. Phila., i, p. 272, 1822 ; 

 laviellata Deshayes, 1853, ^^^ of Linnaeus ; ziczac Krebs, 

 not Linnaeus. ♦ 



Distribution. — North Carolina to Brazil, shallow water. Up- 

 per Miocene (?) to Recent. Gulf coast. — Recent : Ft. 

 Barranca, St. Joseph's Bay, Crooked IsL, Cedar Keys, 

 Fla. ; Horn Isl., Miss. ; Galveston, Corpus Christi and Pt. 

 Isabel, Texas. Pleistocene : Osprey, Manatee, Labelle. 

 Orient, Fla. : New Orleans artesian well of 1856, Lake 

 Borgne borings, New Orleans pumping station No. 7» 

 New Orleans Gymnasium well at 1200 feet, Knapp's wells, 



