125. CONTRIBUTION TO 



The specimen numbered 33, 34 and 35 is from tlie Kaskaskia Limestone, 

 near Bowling Green, Ky. 



The structure over the ventral side of figure 36 can not well be determined^ 

 It has the appearance of aggregate pinules but may be something wholly for- 

 eign to the fossil. At anj' rate, enveloped in this mass, above one ambulacrum, 

 may be seen a part of the outer pyramidal ventral covering, the sutures of whose- 

 minute plates at its base may be plainly seen. 



Locality: Bowling Green, Ky., Kaskaskia group. 



P J: N T R E M I T E S G O D O N I , De France, Rowley. 



Plate 36. Figs. 37, 38, 



Side and ventral views of a four sided specimen in which two ambulacra 

 have been crowded into the space of one, the contiguous halves of the two being; 

 pushed up into a ridge. 



The fossil lias but four radials, four deltoids, three spiracles and the anal 

 opening, the latter being above the deltoid to the left of the abnormal ambulac- 

 rum. 



From the Kaskaskia group, near Bowling Green, Ky. 



P E N T R E M I T E S C A L Y C I N U S , Lyon, Rowley.. 



Plate 36. Figs. 39, 40." 



In general outline neither of our S])eciniens agrees well with L_yon's figure- 

 of the type nor yet with Dr. Hanibach's drawings of Calycinus. There is little 

 doubt of the identity, however. The basil plates form a low cup with a rounded 

 handle-like base. The fork pie(;es are more than half the length of the body, 

 while the deltoids are hardly more than a fourtli the length of the ambulacra 

 and do not extend to the summit. 



The inter-ambulacral spaces are but little depressed, while the ambulacra 

 are broad and slightly trough shaped, and lying but little below the bounding 

 edges of the radial and deltoids. The spiracles are round, as is also the anal 

 opening. 



All our specimens are badly weathered. 



The general aspect of the fossil is much like that of P. pyrlformh, but 

 less in length and more robust than the young of that species. 



The specimens figured are from the Kaskaskia Limestone of Clifty 

 Station, Hardin county, Ky. 



