NO. 6 CUSHMAN, MCCULLOCH : LAGENIDAE 303 



Genus PLANULARIA Def ranee, 1824 



Planularia calif omica (Galloway and Wissler) 



Plate 39, Figs. 6-9 



Crisiellarta reniformis Bagg (not d'Orbigny), Bull. 513, U. S. Geol. 

 Survey, 1912, p. 66, pi. 19, fig. 2. 



Astacolus calif ornicus Galloway and Wissler, Journ. Pal,, vol. 1, 

 1927, p. 46, pi. 8, fig. 4. 



Planularia californica Cushman and Gray, Special Publ. No. 19, 

 Cushman Lab. Foram. Res., 1946, p. 12, pi. 2, fig. 16. — Cushman and 

 Todd, Contr. Cushman Lab. Foram. Res., vol. 23, 1947, p. 62, pi. 15, 

 figs. 4-7. 



Test somewhat longer than broad, much compressed, uncoiling in the 

 adult portion, periphery rounded or flattened, with a raised costa on 

 either side ; chambers distinct, not inflated, increasing gradually in length 

 but little if at all in height; sutures strongly curved, very distinct, tend- 

 ing to become transparent, not raised ; wall usually smooth but occasion- 

 ally with elongate costae generally parallel to the periphery; aperture 

 terminal, radiate. Length up to 0.85 mm. ; breadth up to 0.50 mm. 



The types of this species are from the Pleistocene of Lomita Quarry, 

 California, and it has been recorded from the Pleistocene of Timms 

 Point, California, and of Alaska. 



Stations: 1007, 1075, 1079, 1082, 1083, 1111, 1112, 1118, 1138, 

 1144, 1182, 1186, 1187, 1194, 1196, 1219, 1228, 1232, and 1238. 



Distribution. — These stations are all off the Channel Islands and the 

 depth range is 51 to 300 fms., with the average being 87 fms. Good 

 material was found off San Pedro in 67 fms. 



Planularia planulata (Galloway and Wissler) 

 Plate 40, Figs. 1-5 



Astacolus planulatus Galloway and Wissler, Journ. Pal., vol. 1, 1927, 

 p. 46, pi. 8, fig. 5. 



Planularia planulata Cushman and Gray, Special Publ. No. 19, 

 Cushman Lab. Foram. Res., 1946, p. 12, pi. 2, fig. 18. 



Test two or three times longer than broad, periphery broadly rounded, 

 early portion close coiled, becoming somewhat uncoiled in the adult, 

 initial end broadly rounded; chambers distinct, as many as 12 in the 

 microspheric form, much less in the megalospheric form, increasing rather 

 rapidly in size as added; sutures distinct, not depressed, curved, more 

 strongly so toward the dorsal side; wall smooth, transparent, aperture 

 'terminal, radial. Length up to 0.70 mm. ; breadth up to 0.30 mm. 



