586 PROF. w. A. heedman's revised 



C. ^Serosa * , Macg. (N.W. Eur., Med.) 

 C. sabulosa, Stimps. (Ausfcr.) [Styelinis.] 

 C. parf.ita, ^t\m.-^s. (B.N.Am.) 

 C. ovalis. (?) 



C. violacea, Aid, (N.W. Eur.) 

 C. coriacea, Aid. & Hanc. (N. W. Eur. ) 

 C. sulcatula, Aid. (N.W. Eur.) 

 C. gramilata, Aid. (N.W. Eur.) 

 C.monocer OS, M-oW. (E.N.Am.) 

 C. carnea, Ag. (E. N. Am.) 

 C. steUifera, Verr. (E. N. Am.) 

 C. pulchella, Verr, (E. N. Am.) 

 C. opalina, Aid. (N.W, Eur.) 

 C. glacialis. (?) 

 C angularis, Stimps. (S. Atl.) 

 C. IcBvissima, Stimpa. (Austr.) [Oynthiinge.] 

 C. fZwrnosa, Stimps. (Austr.) [OynthiiiiEe .] 

 C. satsumensis, Stimps. (Japan.) 

 C. delicatula, Stimps. (? Japan.) 

 C. oceUlfera, Stimps. (China.) 

 C. gcmmata, Stimps. (China.) 

 C. araneosa, Stimps. (China.) 

 C. pupa, Sav. (Eed S.) \_Microcosnms ?] 

 - C. rosea, Aid. (N.W. Ear.) 

 Styela pupa, Heller. (S. Atl.) 

 8. areolata. Heller. (Ind. O.) 

 S. lineata, Beck. (Arct.) 

 8. variabilis. (?) 

 S.fih-illata. (?) 



family III. ASCIDIIDJE, Herdman, 1880. 



Body attached, usually sessile, rarely pedunculated. Branchial 

 aperture usually 8-lobed, atrial usually 6-lobed. 



Test gelatinous or cartilaginous, rarely chifcinaceous or horny. 



Branchial sac without folds. Internal longitudinal bars pre- 

 sent and usually papillated. Stigmata straight or curved. 



Tentacles simple, filiform. 



Alimentary canal either at one side of the branchial sac (usually 

 the left) or extending beyond it posteriorly. 



Gonads placed close to the intestine. 



There are four subfamilies — the Corellinse, the Hypobythiinse, 

 the Ascidiinse, and the Cioninse. 



* This species is described as having 6 folds on each side of the branchial 

 sac, and simple tentacles. 



