930 W. KEEPING ON THE GENUS PELANECHINUS. 



EXPLANATION OF PLATE XXXIV. 



Pelanechinus corallinus, Wright, sp. 



Fig. 1. Pelanechinus corallinus, Wr., sp. 



2. Ambulacral area. 



3. Interainbulacral area. 



4. Portion of the corona near the mouth-opening, with the overlapping 



buccal plates. 



5. Plan of the median ambulacral suture. 



6. An ambulacral pair of pores, enlarged. 



7. Outline of the side view of a tubercle, enlarged. 



8. Spine : a, natural size ; b, magnified three times. 



9. Plate from the actinal (buccal) area. 

 10. Internal (?) plate. 



Figs. 1-7 are from a specimen in the Woodwardian Museum, Cambridge ; 

 figs. 8-10 are from the one in Dr. Wright's cabinet. All the figures are natural 

 size, except where otherwise stated. 



