CLASSIFICATION OP THE TTINICATA. 563 



( Body attached, pedunculated, free from sand, and with stigmata nut 



2] in spirals Ascopera. 



[ Generally free, globular, and sandy, with stigmata in spirals 4 



, I With 5 folds on each side of the branchial sac Pera. 



I With 6 or 7 folds on each side 5 



- f With the branchial and atrial lobes laciniated Ctenicella. 



■^ \ With no such laciniation 6 



,, J With a single gonad, on the left side Eugyriopsis. 



^ [With 2 gonads, one on each side Molgula. 



Paeamolgitla, Traustedt, 1885. 

 Body free. 



Test covered with adliering sand. 



Branchial sac with no folds. Stigmata spirally coiled and 

 arranged in infundibula. 



Gonads present on both sides of the body. 



This genus contains the single species 



Faramolgula Schulzii, Traustedt. (Mag.) 



EuGTEA, Alder Sf SancocTc, 1870. 



Body globular, unattached. Branchial aperture 6-lobed, atrial 

 4-lobed. 



Test usually thin and transparent, incrusted with sand or 

 plain. 



Branchial sac with no folds. Internal longitudinal bars few, 

 broad, and ribbon-like. Infundibula large, conical, formed of 

 regularly coiled vessels, which form a double spiral meeting at 

 the apex. They are placed in longitudinal rows, one in each 

 mesh. 



Tentacles compound. 



Gonad forming a single mass situated on the left side close to 

 the intestine. 



The species of this genus may be distinguished as follows : — 



Body attached by a very long peduncle. 



E. pedunculata, Traust. (Arct.) 

 Body not pedunculated , .. 1 



r Test thin, transparent, without sand. 

 \ \ E. kerguolenensis, Herdm. (A. Arct.) 

 [ Test opaque, covered with sand 2 



LINN. JOUEN. — ZOOLOaT, YOL. XXIII. 40 



