CLASSIFICATION OF THE TUNICATA. 575 



f With 14-16 tentacles M. claudicans, Sav. (N.W. Eur., 



15 ] [Pue., Med., Ind. O.) 



[ With 18-20 tentacles M. affinis. Heller. (Austr.) 



14 I With 14 folds on each side M. JuHnli, \. Dr. (Austr.) 



\ With 12 folds on each side M. Bmschli, n. sp. (Austr.) 



Ehabdocynthia*, n. geu. 



JBody generally smootli. Brancliial and atrial apertures 4- 

 lobed. 



Test generally rather soft and cartilaginous, containing cal- 

 careous spicules. 



Mantle also containing calcareous spicules develojjed in con- 

 nectiye-tissue sheaths. 



JBranchial sac with, six or more folds on each side. The chief 

 vessels contain calcareous echinuted spicules. 



Tentacles compound. 



Dorsal lamina toothed. 



There are about a dozen species in this genus, and they may 



be separated as follows : — 



/Branchial sac with 6 folds on each side 1 



\ More than 6 folds on each side 2 



(Surface smooth, test gelatinous, colour whitish. 

 B. mollis, n. sp. (Austr.) 

 Surface corrugated, test leathery, colour dark brown. 

 H. sacciformis, v. Dr. (Jap.) 



Q r Test transparent or semitransparent 3 



[ Test not at all transparent 4 



7 folds on each side 5 



8 folds on each side E. mauritiana, v. Dr. (Ind. O.) 



(Body elongated ; colour greenish brown. 

 E. subfusca, n. sp. (Austr.) 

 Body rounded, flattened ; colour whitish. 

 E. tenuis, n. sp. (Austr.) 



. / Test soft, cartilaginous 6 



[Test not soft or cartilaginous 7 



P [Test thin, surface rougliish E. papietensis, Herdm. (Pac.) 



I Test thick, surface smooth E. comijlanata.j'S.Qi-Ava. (Austr.) 



- r Animal barrel-shaped; colour red ... E. rosea, Sluit. (Mai.) 

 \ Not barrel-shaped ; colour grey or yellowish white 



(^ Shape pyriform E.pyriformis,'R2iihke. (Pac.Atl.) 



I Shape oblong, with abroad base, 8 folds on each side. 

 S { E. pallida, Heller. (Pac. , Atl. , W. 



I [Ind., Ind. O. 



^^ do., Tar.ii7/«Yo?zeH.sM, Sluit. (Mai.) 



* If this is exactly the genus for which Lahille, in 1887, proposed the name 

 Herdmania (Assoc. Fran^.), then Ekahdocynthia must give way to that prior 

 designation. 



