NEW EASTERN PACIFIC SEA STARS 



(Plates 31-34) 

 Fred C. Ziesenhenne 



Research Assistant 

 Allan Hancock Foundation 



During the last ten years the Velero III, research cruiser of the Allan 

 Hancock Foundation, The Universit}^ of Southern California, on various 

 scientific cruises to the eastern tropical Pacific and southern California 

 waters has dredged an extensive collection of sea stars, including the fol- 

 lowing new species. In keeping with the policy of making expedition 

 results immediately available, it has been thought advisable to publish on 

 the new species rather than to await the final report on the Asteroidea. 



The writer acknowledges his indebtedness to Dr. H. L. Clark of the 

 Museum of Comparative Zoology, Harvard College; to Mr. A. H. Clark 

 of the U. S. National Museum ; and to Dr. W. K. Fisher of the Hopkins 

 Marine Station for valuable and helpful suggestions in the preparation 

 of the manuscript. Thanks are due Mr. Anker Petersen, staff artist of 

 the Allan Hancock Foundation, for the drawings and recording of color 

 notes, and Mr. G. P. Ashcraft of the Allan Hancock Foundation for the 

 accompanying photographs. 



Last, but not least, the author expresses grateful appreciation to Cap- 

 tain Allan Hancock for the privilege of participating in most of the 

 Velero III expeditions and for the opportunity of a trip east to study and 

 compare many of the specimens with type material of the U. S. National 

 Museum and the Museum of Comparative Zoology. 



Astropectinidae 



Genus LEPTYCHASTER Smith 



Subgenus Parastropecten Ludwig 



Leptychaster (Parastropecten) stellatus, new species 



Plate 31, Figs. 1-3 



Description.— Rzys 5, R=15 mm., r=6 mm., R=2.5 r. Width of 

 ray at second marginal plate 6 mm. Disk moderate, rays about as long 

 as width of disk, gradually tapering to a bluntly pointed tip ; general form 

 depressed. Abactinal paxillar areas not crowded, paxillae arranged in 



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