ECHINODERMATA OF NEW ENGLAND. 73 



OPHIURANS. 



Amphiura squamata. 



This species is hermaphrodite and the young reach a 

 stellate form before they leave the parent. Provisional 

 spines corresponding to the plutean spines are developed, 

 to be later lost. 



Ophioglypha Sarsii. 

 Said to be viviparous ? 



ASTEROIDS. 



Larva with club-shaped, opaque larval body carried 

 about the mouth. Color, white or brownish. 



Leptasterias. 



Larva without club-shaped body. Color, bright red, 

 carried in a pouch made by an infolding of the mouth. 



Cribrella. 



Larva carried in pouches between a tent-like covering 

 on the back and the back (aboral) region of the adult. 



Pteraster* 



No Echinoid found in New England is known to have a 

 direct development. 



Aster ina. 



ESSEX INST. BULLETIN, VOL. XXIII 5* 



