^70 PEOi". w. A. heedman's eevised 



Gonads on the inner surface of the mantle, either on both 

 sides or on one only. 



■ This very large and important family contains three well- 

 marked sections or subfamilies — the Bolteniinse, the Cynthiinae, 

 and the Styelinse. 



Subfamily Boltettiinje, Herdman, 1880. 



Body attached and pedunculated ; peduncle usually very long ; 

 branchial and atrial apertures having either 4 or less than 4 lobes. 



Test coriaceous, membranous or cartilaginous, not covered with 

 sand. 



Branchial sac with more than four folds on each side. 



Tentacles compound. 



This subfamily includes four genera, which may be separated 



thus : — 



/ Fine longitudinal vessels and stigmata present Boltenia. 



\ No fine longit. vessels in branchial sac 1 



, r Branchial aperture 4-lobed Cystingia. 



I Branchial aperture more or less triangular 2 



„ rStalk relatively short and thick Fungtaus. 



^ 1 Stalk relatively long and slender Culeolus. 



Boltenia, Savigny, 1816. 



Body more or less globular, fixed on a long peduncle ; aper- 

 tures lateral, 4-lobed. 



Test coriaceous or cartilaginous. 



Branchial sac longitudinally folded, with 6 or more folds on 

 each side. Eiue longitudinal vessels present, forming straight 

 stigmata. 



Tentacles compound. 



Dorsal languets present. 



The species oi Boltenia* may be distinguished as follows : — 



f Peduncle not longer than body B. legumen. Lesson (Mag.) 



\ Peduncle many times longer than body 1 



■J fBody globular or nearly ovate, regular 2 



[Body irregular, flattened or lobed 3 



* ClavcUnopsis rubra, Fewkes, is probably a Boltenia, but the description 

 insufficient. 



