. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. BuLLETi>^, So. Calif. Academy of Sciences Vol. 43, Part 1, 1944 TWO NEW WEST AMERICAN PELECYPODS By G. WiLLETT Los Angeles County Museum During a study of a collection of mollusks from Upper Pleistocene deposits from the mesa at the head of Newport Bay, Orange County, California, several undescribed species have come to light. Among these are two interesting pelecypods, the de- scriptions of which follow. Cardita hilli sp. nov. (). Description.—Shell small (so far as known), obliquely
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. BuLLETi>^, So. Calif. Academy of Sciences Vol. 43, Part 1, 1944 TWO NEW WEST AMERICAN PELECYPODS By G. WiLLETT Los Angeles County Museum During a study of a collection of mollusks from Upper Pleistocene deposits from the mesa at the head of Newport Bay, Orange County, California, several undescribed species have come to light. Among these are two interesting pelecypods, the de- scriptions of which follow. Cardita hilli sp. nov. (). Description.—Shell small (so far as known), obliquely rounded, slightly higher than long, inflated; with 25 to 27 somewhat flattened, radiating ribs which are crossed by much less prominent concentric ribs, the junctions being slightly nodulous, particularly on the posterior slope. Spaces between radiating ribs less than half the width of the ribs, and perceptibly channeled in larger specimens. Beaks. PLATE 7 Cardita Jiilli. type (X2) Photo courtesy L. A. County Museum 19. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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