160 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



The Family Clavelinid^* may now be classified 



as follows : — 

 Branchial Sac with internal longitudinal bars 

 Branchial Sac without internal longitudinal bars 

 -. (Body divided into distinct abdomen and thorax 

 (No distinct abdomen present 



o } Branchial Sac minutely plicated (Bhopakea) . . . 

 | Branchial Sac not minutely plicated (Bhopalopsis) 



k (Branch, aperture 8 lobed, atrial 6, B. neapolitana, Phil. 



(Branch, aperture 6 lobed, atrial 12, B. cerberiana, Lah. 

 r. (Test thin anteriorly, dark coloured... B. fusca, Herdm. 



[Test thick all over, light grey ... B. crassa, Herdm. 

 i (Blood vessels in test (Shriteria) ... S. rubricollis, SI. 



1 No blood vessels in test (Ecteinascidia) 7 



„ (Tentacles about 40 in number ... E. diaphanis, SI. 



(Tentacles about 80 in number 8 



/'Dorsal languets and connecting ducts wide and 



oj membranous E. moorei, Herdm. 



i Dorsal languets and connecting ducts narrow 



V and papilliform 9 



/'Tentacles of 3 distinct lengths, languets not 

 q.J united E. turbinate/,, Herdm. 



] Tentacles not distinctly of 3 lengths, languets 



1 united by a narrow membrane, E. thurstoni, Herdm. 

 o (No distinct abdomen present 10 



( Abdomen distinct from the thorax 11 



11 



Body divided into thorax, abdomen, and a well- 

 marked peduncle (Podoclavella, n.gen.) 12 



] Body not pedunculated apart from the long abdo- 

 { men 13 



12 (Colour green, tentacles in two rows, P. borealis, Sav. 

 {Colour purple, tentacles in 1 row,P. meridionalis,n. sp.f 



* Clavelinopsis rubra, Fewkes, probably does not belong to this family, but 

 is a Boltenia. 



tThis new species, along with Stereoclavella (n. gen.) australis, will be 

 described and figured in the ' ' Catalogue of Tunicata of the Australian 

 Museum," which I am now preparing. 



