296 AXEL A. OLSSON 



Range — Lower California to northern Peru. Panama: San Carlos; Pearl 

 Islands; Burica Peninsula. Panama Canal Zone: Venado Beach; Balboa. 

 Ecuador: Esmeraldas; Galeras; Jaramijo; Manta; Punta Blanca; Isla la 

 Plata; Santa Elena. Peru: Boca Pan; Caleto Sal; Mancora. 



Subgenus LIROPHORA Conrad, 1863 

 Type species by subsequent designation, Dall, 1892, Venus athleta 

 Conrad (Circumphalus (Lirophora) athleta Conrad) {:=Venus latilirata 

 Conrad). Miocene of the middle Atlantic States. 



Shell trigonal-ovate, usually solid and heavy, surface sculptured with 

 thickened, flattened or rounded, concentric folds, continuous across the disk 

 or lamellose at the ends. Hinge as in Chione, s.s., the pallial sinus small. 

 Ventral margin finely crenulate. 



Chione (Lirophora) kellettii (Hinds) Plate 41, figure 5; 



Plate 51, figures 4. 4a 



Venus kellettii Hinds, 1844, Zool. Voy. Sulphur, vol. 2, Moll., pt. 3, p. 65, pi. 19, fig. 



5 Island of Quibo, West coast of Veragua, Panama. — Sowerby, 1853, Tlies. 



Conch., vol. 2, p. 721, pi. 155, fig. 64.— Reeve, 1863, Conch. Icon., vol. 14, 



Venus, pi. 18, fig. 82. 

 Chione {Lirophora) kellettii (Hinds), Pilsbry and Olsson, 1941, Proc. Acad. Nat. Sci. 



Philadelphia, p. 64, pi. 16, fig. 2. — Maxwell Smith, 1944, Panamic Marine 



Shells, p. 61, fig. 776. — Hertlein and Strong, 1948, Zoologica, vol. 33, pt. 4, No. 



13, pp. 185, 186. — Hertlein and Strong, 1955, Bull. Amer. Mus. Nat. Hist, vol. 



107, art. 2, p. 194. 

 Chione [Anomalocardia) kellettii (Hinds), Parker, 1949, Jour. Paleont., vol. 23, No. 6, 



p. 586, pi. 92, fig. 8; pi. 93, fig. 1. 



Shell often quite large (length 68 mm.), elongately ovate, the posterior 

 side the longer. The sculpture consists of low, flat, more or less wrinkled 

 or radially striated, concentric folds, best developed over the surface of the 

 umbones but fade out or change into wide, smooth bands ventrally. On the 

 dorsal slopes, the concentrics are elevated into thin, foliaceous lamellae. 

 Color is usually a dull brown, the interior white. Pallial sinus small, the 

 ventral margins finely crenulated. 



Length 65.3 mm., height 53 mm., diameter 37 mm. Bay of Panama. 



This is an off-shore species, now taken in some numbers by the shrimp 

 fishermen in Panama. The species is known as fossil in the Pliocene of 

 Ecuador. 



Range — Gulf of California to Panama and probably still further south. 

 Panama: Off Coiba Islands (Hinds); Off Punta Mala (shrimpers). 



Chione (Lirophora) mariae (d'Orbgny) Plate 49, figures 2, 8, 8a 



Venus cypria Sowerbv, 1835, Proc. Zool. Soc. London, p. 43. Isla la Plata. — Sowerbv, 

 1853, Thes. Conch., vol. 2, p. 722, pi. 157, fig. 113.— Reeve, 1863, Conch. Icoii., 

 vol. 14, Venus, pi. 23, figs. 116a, 116b. (Not Venus cypria Brocchi, 1814 or 

 Risso, 1826). 



Venus mariae d'Orbigny, 1846, Voy. Amer. Merid., vol. 5, p. 563. (New name for 

 Venus cypria Sowerby, not of Brocchi, 1814, nor Risso, 1826). 



Chione {Lirophora) mariae (d'Orbigny), Pilsbry and Olsson, 1941, Proc. Acad. Nat. 

 Sci. Philadelphia, vol. 93, pp. 64, 65. — Hertlein and Strong, 1948, Zoologica, 

 vol. 33, pt. 4, No. 13, p. 186.— Hertlein and Strong, 1955, Bull. Amer. Mus. 

 Nat. Hist, vol. 107, art 2, pp. 194, 195. 



Chione {Anomalocardia) mariae (d'Orbigny), Parker, 1949, Jour. Paleont, vol. 23, 

 No. 6, p. 586, pi. 92, figs. 7, 9, 10, 16. 



