HEXACTINBLLIDS WITH DI S C OC TAS TE RS . 5!> 



more in length ; smooth, bat when fully developed, minutely and uni- 

 formly rough as in St. Dowliiigi. 



Gastralia are represented by diactins, some of which are similar to 

 autodermalia, while others are larger and very sparingly rough and 

 graduate over to parenchymal diactins. 



More detailed descriptions with illustrations of all the above species 

 will be embodied in my monograph on the Hexactinellids of Sagami 

 Sea, which will be published in the Science College Journal. 



Printed May 17, 1897. 



