BuLIvETiN 34 104 



250, pi. 10, f. I, i', 1852. Not Artemis tenuis Sowerby, 

 1852. 



Cydiyia tenuis Beau, Cat. Coq. Guadeloupe, p. 24, '5S. 



Mysia tenuis Dall and Simpson, 1901. 



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

 Dunker, '78 ; tenuis Dall, Bull. 37, p. 56, '89. 



Cycliriella 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 Keys, Fla. 

 Pliocene : Caloosahatchie. Type locality Pointe — a- 

 Petre, Guadeloupe. 



Genus CHIONE Megerle 

 canceMata Linnaeus, S5^st. 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; 

 Single}', 4th Ann. Rept. Tex., p. 327, 1892 ; Vanatta, 

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

 Tex. Sh. 



Chione cancellaia 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 cigenda Dillwyn, Cat. Rec Shells, p. 161, 1817. 



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

 lamellata Deshayes, 1853, ^ot of Linnseus ; ziczac Krebs, 

 not Linnaeus. 

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

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

 Barranca, St. Joseph's Bajs Crooked Isl., Cedar Keys, 

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

 Isabel, Texas. Pleistocene : Ospre}^ 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, 



