Llfe«Afcf> NEW YOPk BOTANiC.v? SOME NEW SPECIES FROM THE PLIOCENE OF SOUTHERN CALIFORNIA WITH A FEW CHANGES IN NOMENCLATURE By CARLTON M. CARSON Stanford University Cantharus breaensis n. sp. Plate I. Fig. 2 Shell thick, ventricose; spire moderately high with five rapidly enlarging whorls; whorls rounded and shouldered above; suture dis-tinct, forming a wavy collar on the whorl above; sculptured with numerous fine, square-topped, spiral, ribs; interspaces wide, carrying interoalaries, few above the shoulder but many below; axial sculpture consists only of numerous fine incremental lines; aperture ovate; pillar straight, carrying a single low, rounded, fold near the juncture of the outer lip and columella; outer lip rather thin, inside concealed, but another specimen shows it to be crenated within; canal open, re-curved; external siphonal fascicle partially broken, but was apparently heavy. Height of type 47 mm., diameter of type 31 mm., apical angle about 67°. Localities: — Mouth of Brea Canyon, Puente Hills, Los Angeles Co., Calif. Fernando Formation, lower Pliocene. Collected by C. M. Carson. Also from the Fernando Formation of the Camulos Sheet, Los Angeles Co., Calif. Collected by L. C. Decius. Common associates of this form at Brea Canyon are: Alectrion fossatus Gould, Alectrion moranianus. Martin, Area trilineata Conrad, Gardium quadri genarium Conrad, Fusinus harbarensis Trask, Ostrea veatchii Gabb, Pecten ashleyi Arnold, Pecten oiveni Arnold, Peeten etchegoini Anderson, and Turritella cooperi Carpenter. Cantharus ashleyi n. sp. Plate 1 Figs. 6 and 7 Shell slender; spire high, with six rapidly enlarging whorls, body whorl rounded but not shouldered, earlier whorls vertical and dis-tinctly shouldered; suture distinct forming a wavy collar on the earlier whorl; sculpture consisting of numerous fine, rounded, spiral, ribs and narrow interspaces carrying, in some cases, fine intercal-aries; axial sculpture consists of small nodes on the earliest three whorls, 10 nodes to a whorl and a few incremental lines; aperture pyriform; pillar slightly curved and smooth carrying a single high rounded plait near junction of outer lip and columella; canal partly broken off, outer lip rather thin, inside crenated. Height of type 51 mm., diameter of type 28 mm., apical angle 60°. Localities: — Near the San Fernando Tunnel. Los Angeles Co., Calif., Fernando Formation, lower Pliocene. Collected by G. H. Ash-ley. Another specimen from Gavin Canyon, Camulos Sheet, Los An-geles Co., Calif., collected by C. M. Carson, shows the canal to be open, slightly recurved and the external siphonal fascicle to be quite heavy. Height of paratype 54 mm., diameter of paratype about 31 mm., apical angle 61°. 31
BioStor
