PLATE (i. 



FiS- 1- Hpixiiislrui'tidii nf posterior onil of Ii-htliyoiuriii;i porosa. 



Fig. 2. Same of Dondcrsia (•alifornina. 



Fig. 3. Sami' <if nn-paiionienia vain|)vrrll:i. 



Fig. 4. Same of Uoryincnia ;Hiila. 



Fig. 5. Same of [interior end of Loplionienia si)irali.s. 



Fig. I), .lunetion of ])liaryux and stoma<'li-intestine in Stropliomenia scandens, showing opening 

 of the ventral salivary gland and a jwrlion of I lie labio-liuecal system. 



Fig. 7. Reeonstruetion of posterior end of Stropliomenia seandens. 



Fig. S. Same of Chaetoderma luuvaiiensis. dso dorso-terminal groove; gn suprarectal com- 

 missure; nd, coelomoduct ; rpo reno-pericardial opening. 



